./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Collatz_bounded.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Collatz_bounded.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fb8f212b8045dc9be8518316cbae752ce6111a4a93244dc89f86b0ea27a978ef --- 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-b5237d8 [2022-11-22 02:36:33,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:36:33,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:36:33,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:36:33,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:36:33,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:36:33,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:36:33,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:36:33,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:36:33,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:36:33,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:36:33,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:36:33,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:36:33,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:36:33,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:36:33,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:36:33,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:36:33,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:36:33,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:36:33,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:36:33,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:36:33,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:36:33,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:36:33,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:36:33,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:36:33,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:36:33,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:36:33,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:36:33,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:36:33,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:36:33,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:36:33,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:36:33,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:36:33,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:36:33,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:36:33,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:36:33,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:36:33,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:36:33,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:36:33,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:36:33,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:36:33,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-22 02:36:33,165 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:36:33,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:36:33,166 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:36:33,166 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:36:33,167 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:36:33,167 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:36:33,167 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:36:33,167 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:36:33,168 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:36:33,168 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:36:33,168 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:36:33,168 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:36:33,168 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:36:33,169 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:36:33,169 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:36:33,169 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:36:33,169 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:36:33,169 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:36:33,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:36:33,171 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:36:33,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:36:33,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:36:33,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:36:33,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:36:33,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:36:33,173 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 02:36:33,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:36:33,173 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:36:33,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:36:33,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:36:33,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:36:33,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:36:33,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:36:33,175 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:36:33,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:36:33,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:36:33,175 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:36:33,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:36:33,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:36:33,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:36:33,187 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_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb8f212b8045dc9be8518316cbae752ce6111a4a93244dc89f86b0ea27a978ef [2022-11-22 02:36:33,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:36:33,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:36:33,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:36:33,482 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:36:33,482 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:36:33,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/termination-crafted/Collatz_bounded.c [2022-11-22 02:36:36,708 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:36:36,938 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:36:36,938 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/sv-benchmarks/c/termination-crafted/Collatz_bounded.c [2022-11-22 02:36:36,945 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/data/c60d6bd57/7e51e1466eb841d19c858ed7b1572040/FLAGae7a5fb8f [2022-11-22 02:36:36,962 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/data/c60d6bd57/7e51e1466eb841d19c858ed7b1572040 [2022-11-22 02:36:36,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:36:36,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:36:36,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:36:36,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:36:36,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:36:36,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:36:36" (1/1) ... [2022-11-22 02:36:36,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f97130e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:36, skipping insertion in model container [2022-11-22 02:36:36,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:36:36" (1/1) ... [2022-11-22 02:36:36,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:36:37,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:36:37,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:36:37,225 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:36:37,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:36:37,246 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:36:37,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:37 WrapperNode [2022-11-22 02:36:37,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:36:37,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:36:37,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:36:37,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:36:37,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:37" (1/1) ... [2022-11-22 02:36:37,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:37" (1/1) ... [2022-11-22 02:36:37,285 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2022-11-22 02:36:37,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:36:37,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:36:37,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:36:37,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:36:37,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:37" (1/1) ... [2022-11-22 02:36:37,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:37" (1/1) ... [2022-11-22 02:36:37,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:37" (1/1) ... [2022-11-22 02:36:37,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:37" (1/1) ... [2022-11-22 02:36:37,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:37" (1/1) ... [2022-11-22 02:36:37,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:37" (1/1) ... [2022-11-22 02:36:37,305 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:37" (1/1) ... [2022-11-22 02:36:37,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:37" (1/1) ... [2022-11-22 02:36:37,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:36:37,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:36:37,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:36:37,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:36:37,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:37" (1/1) ... [2022-11-22 02:36:37,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:36:37,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:36:37,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:36:37,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:36:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:36:37,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:36:37,457 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:36:37,459 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:36:37,585 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:36:37,604 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:36:37,604 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:36:37,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:36:37 BoogieIcfgContainer [2022-11-22 02:36:37,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:36:37,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:36:37,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:36:37,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:36:37,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:36:36" (1/3) ... [2022-11-22 02:36:37,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6ddcc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:36:37, skipping insertion in model container [2022-11-22 02:36:37,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:37" (2/3) ... [2022-11-22 02:36:37,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6ddcc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:36:37, skipping insertion in model container [2022-11-22 02:36:37,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:36:37" (3/3) ... [2022-11-22 02:36:37,618 INFO L112 eAbstractionObserver]: Analyzing ICFG Collatz_bounded.c [2022-11-22 02:36:37,640 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:36:37,640 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-22 02:36:37,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:36:37,698 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;@5f218c90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:36:37,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-22 02:36:37,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 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) [2022-11-22 02:36:37,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:36:37,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:37,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:36:37,711 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:36:37,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:37,717 INFO L85 PathProgramCache]: Analyzing trace with hash 67641555, now seen corresponding path program 1 times [2022-11-22 02:36:37,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:37,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205868732] [2022-11-22 02:36:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:37,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:38,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:38,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:38,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205868732] [2022-11-22 02:36:38,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205868732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:36:38,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:36:38,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:36:38,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199575453] [2022-11-22 02:36:38,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:36:38,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:36:38,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:38,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:36:38,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:36:38,077 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 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 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:38,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:38,322 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-11-22 02:36:38,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:36:38,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 02:36:38,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:38,336 INFO L225 Difference]: With dead ends: 34 [2022-11-22 02:36:38,336 INFO L226 Difference]: Without dead ends: 24 [2022-11-22 02:36:38,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:36:38,344 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:38,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 8 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:36:38,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-22 02:36:38,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-22 02:36:38,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 23 states have internal predecessors, (26), 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) [2022-11-22 02:36:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-11-22 02:36:38,386 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 5 [2022-11-22 02:36:38,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:38,387 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-11-22 02:36:38,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:38,388 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-11-22 02:36:38,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 02:36:38,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:38,389 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:36:38,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:36:38,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:36:38,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:38,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1409696742, now seen corresponding path program 1 times [2022-11-22 02:36:38,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:38,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117672879] [2022-11-22 02:36:38,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:38,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:38,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:38,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:38,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117672879] [2022-11-22 02:36:38,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117672879] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:36:38,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7037058] [2022-11-22 02:36:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:38,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:38,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:36:38,626 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:36:38,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:36:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:38,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:36:38,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:36:38,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:38,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:36:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:39,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7037058] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:36:39,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1883332695] [2022-11-22 02:36:39,046 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:36:39,047 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:36:39,051 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:36:39,057 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:36:39,060 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:36:39,281 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:36:39,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1883332695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:36:39,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:36:39,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4, 3] total 11 [2022-11-22 02:36:39,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291855204] [2022-11-22 02:36:39,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:36:39,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:36:39,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:39,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:36:39,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:36:39,682 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) 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) [2022-11-22 02:36:39,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:39,889 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2022-11-22 02:36:39,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:36:39,889 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) 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 11 [2022-11-22 02:36:39,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:39,893 INFO L225 Difference]: With dead ends: 62 [2022-11-22 02:36:39,893 INFO L226 Difference]: Without dead ends: 48 [2022-11-22 02:36:39,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 7 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:36:39,902 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:39,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 6 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:36:39,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-22 02:36:39,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 36. [2022-11-22 02:36:39,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:39,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-11-22 02:36:39,930 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 11 [2022-11-22 02:36:39,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:39,931 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-11-22 02:36:39,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) 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) [2022-11-22 02:36:39,931 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-11-22 02:36:39,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 02:36:39,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:39,932 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:36:39,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:36:40,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:40,138 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:36:40,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:40,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1591049055, now seen corresponding path program 1 times [2022-11-22 02:36:40,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:40,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803045134] [2022-11-22 02:36:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:40,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:40,375 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:36:40,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:40,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803045134] [2022-11-22 02:36:40,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803045134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:36:40,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:36:40,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:36:40,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812808867] [2022-11-22 02:36:40,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:36:40,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:36:40,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:40,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:36:40,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:36:40,382 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:40,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:40,444 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-11-22 02:36:40,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:36:40,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-22 02:36:40,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:40,446 INFO L225 Difference]: With dead ends: 37 [2022-11-22 02:36:40,447 INFO L226 Difference]: Without dead ends: 32 [2022-11-22 02:36:40,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:36:40,451 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:40,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:36:40,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-22 02:36:40,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2022-11-22 02:36:40,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 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) [2022-11-22 02:36:40,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-22 02:36:40,468 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2022-11-22 02:36:40,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:40,468 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-22 02:36:40,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:40,469 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-22 02:36:40,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 02:36:40,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:40,470 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:36:40,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:36:40,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:36:40,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:40,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1591048863, now seen corresponding path program 1 times [2022-11-22 02:36:40,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:40,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658156176] [2022-11-22 02:36:40,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:40,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:40,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:40,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:40,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658156176] [2022-11-22 02:36:40,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658156176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:36:40,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298304679] [2022-11-22 02:36:40,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:40,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:40,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:36:40,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:36:40,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:36:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:40,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:36:40,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:36:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:40,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:36:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:40,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298304679] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:36:40,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1325334708] [2022-11-22 02:36:40,854 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 02:36:40,854 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:36:40,854 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:36:40,855 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:36:40,855 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:36:42,355 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:36:42,472 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '444#(not (<= (* 3 |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2022-11-22 02:36:42,472 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:36:42,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:36:42,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 9 [2022-11-22 02:36:42,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797842944] [2022-11-22 02:36:42,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:36:42,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 02:36:42,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:42,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 02:36:42,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-22 02:36:42,474 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:42,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:42,653 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2022-11-22 02:36:42,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 02:36:42,654 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-22 02:36:42,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:42,655 INFO L225 Difference]: With dead ends: 72 [2022-11-22 02:36:42,655 INFO L226 Difference]: Without dead ends: 71 [2022-11-22 02:36:42,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-22 02:36:42,656 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:42,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:36:42,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-22 02:36:42,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 52. [2022-11-22 02:36:42,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 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) [2022-11-22 02:36:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2022-11-22 02:36:42,666 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 15 [2022-11-22 02:36:42,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:42,666 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2022-11-22 02:36:42,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:42,667 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2022-11-22 02:36:42,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-22 02:36:42,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:42,668 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-11-22 02:36:42,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:36:42,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:42,874 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:36:42,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:42,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1942598407, now seen corresponding path program 2 times [2022-11-22 02:36:42,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:42,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324262955] [2022-11-22 02:36:42,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:42,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:43,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:43,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324262955] [2022-11-22 02:36:43,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324262955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:36:43,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596429910] [2022-11-22 02:36:43,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:36:43,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:43,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:36:43,139 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:36:43,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:36:43,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 02:36:43,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:36:43,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 02:36:43,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:36:43,269 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-22 02:36:43,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:36:43,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596429910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:36:43,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:36:43,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2022-11-22 02:36:43,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452544497] [2022-11-22 02:36:43,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:36:43,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:36:43,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:43,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:36:43,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:36:43,272 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:43,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:43,321 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2022-11-22 02:36:43,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:36:43,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-22 02:36:43,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:43,323 INFO L225 Difference]: With dead ends: 88 [2022-11-22 02:36:43,323 INFO L226 Difference]: Without dead ends: 60 [2022-11-22 02:36:43,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:36:43,324 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:43,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 6 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:36:43,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-22 02:36:43,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 48. [2022-11-22 02:36:43,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 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) [2022-11-22 02:36:43,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2022-11-22 02:36:43,334 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 27 [2022-11-22 02:36:43,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:43,335 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2022-11-22 02:36:43,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:36:43,335 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2022-11-22 02:36:43,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-22 02:36:43,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:43,337 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2022-11-22 02:36:43,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-22 02:36:43,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:43,543 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:36:43,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:43,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1952344899, now seen corresponding path program 3 times [2022-11-22 02:36:43,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:43,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907655230] [2022-11-22 02:36:43,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:43,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 5 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:43,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:43,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907655230] [2022-11-22 02:36:43,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907655230] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:36:43,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465051062] [2022-11-22 02:36:43,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:36:43,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:43,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:36:43,967 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:36:43,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:36:44,014 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:36:44,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:36:44,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 02:36:44,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:36:44,161 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 5 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:44,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:36:44,409 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:44,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465051062] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:36:44,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [127179449] [2022-11-22 02:36:44,413 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 02:36:44,414 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:36:44,414 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:36:44,414 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:36:44,415 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:36:45,609 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:36:45,774 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1078#(not (<= (* 3 |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2022-11-22 02:36:45,774 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:36:45,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:36:45,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 8] total 26 [2022-11-22 02:36:45,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235184266] [2022-11-22 02:36:45,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:36:45,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-22 02:36:45,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:45,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-22 02:36:45,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=721, Unknown=0, NotChecked=0, Total=1056 [2022-11-22 02:36:45,776 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 27 states, 26 states have (on average 3.269230769230769) internal successors, (85), 27 states have internal predecessors, (85), 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) [2022-11-22 02:36:46,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:46,224 INFO L93 Difference]: Finished difference Result 182 states and 207 transitions. [2022-11-22 02:36:46,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-22 02:36:46,224 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.269230769230769) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-22 02:36:46,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:46,226 INFO L225 Difference]: With dead ends: 182 [2022-11-22 02:36:46,226 INFO L226 Difference]: Without dead ends: 181 [2022-11-22 02:36:46,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 78 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=555, Invalid=1085, Unknown=0, NotChecked=0, Total=1640 [2022-11-22 02:36:46,227 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 127 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:46,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 2 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:36:46,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-22 02:36:46,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 88. [2022-11-22 02:36:46,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.1149425287356323) internal successors, (97), 87 states have internal predecessors, (97), 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) [2022-11-22 02:36:46,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2022-11-22 02:36:46,244 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 35 [2022-11-22 02:36:46,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:46,244 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2022-11-22 02:36:46,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.269230769230769) internal successors, (85), 27 states have internal predecessors, (85), 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) [2022-11-22 02:36:46,249 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2022-11-22 02:36:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-22 02:36:46,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:46,253 INFO L195 NwaCegarLoop]: trace histogram [17, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1] [2022-11-22 02:36:46,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:36:46,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:46,459 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:36:46,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:46,460 INFO L85 PathProgramCache]: Analyzing trace with hash 445623299, now seen corresponding path program 4 times [2022-11-22 02:36:46,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:46,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936455771] [2022-11-22 02:36:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:46,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:48,266 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 15 proven. 433 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:48,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:48,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936455771] [2022-11-22 02:36:48,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936455771] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:36:48,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299436319] [2022-11-22 02:36:48,267 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 02:36:48,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:36:48,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:36:48,269 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:36:48,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:36:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:48,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-22 02:36:48,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:36:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 15 proven. 433 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:48,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:36:49,723 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 30 proven. 418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:49,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299436319] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:36:49,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1091311950] [2022-11-22 02:36:49,726 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 02:36:49,726 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:36:49,726 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:36:49,727 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:36:49,727 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:36:50,739 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:36:51,205 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1995#(not (<= (* 3 |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2022-11-22 02:36:51,205 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:36:51,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:36:51,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 26, 18] total 71 [2022-11-22 02:36:51,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379821546] [2022-11-22 02:36:51,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:36:51,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-22 02:36:51,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:51,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-22 02:36:51,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2186, Invalid=3820, Unknown=0, NotChecked=0, Total=6006 [2022-11-22 02:36:51,210 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 72 states, 71 states have (on average 3.3098591549295775) internal successors, (235), 72 states have internal predecessors, (235), 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) [2022-11-22 02:36:52,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:52,701 INFO L93 Difference]: Finished difference Result 587 states and 676 transitions. [2022-11-22 02:36:52,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-22 02:36:52,702 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 3.3098591549295775) internal successors, (235), 72 states have internal predecessors, (235), 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 85 [2022-11-22 02:36:52,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:52,705 INFO L225 Difference]: With dead ends: 587 [2022-11-22 02:36:52,705 INFO L226 Difference]: Without dead ends: 586 [2022-11-22 02:36:52,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 193 SyntacticMatches, 18 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6811 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3605, Invalid=6295, Unknown=0, NotChecked=0, Total=9900 [2022-11-22 02:36:52,709 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 628 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:52,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 2 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:36:52,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-11-22 02:36:52,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 228. [2022-11-22 02:36:52,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.13215859030837) internal successors, (257), 227 states have internal predecessors, (257), 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) [2022-11-22 02:36:52,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 257 transitions. [2022-11-22 02:36:52,748 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 257 transitions. Word has length 85 [2022-11-22 02:36:52,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:52,748 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 257 transitions. [2022-11-22 02:36:52,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 3.3098591549295775) internal successors, (235), 72 states have internal predecessors, (235), 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) [2022-11-22 02:36:52,749 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 257 transitions. [2022-11-22 02:36:52,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-22 02:36:52,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:52,760 INFO L195 NwaCegarLoop]: trace histogram [37, 19, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1] [2022-11-22 02:36:52,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:36:52,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 02:36:52,966 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:36:52,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:52,967 INFO L85 PathProgramCache]: Analyzing trace with hash -427728369, now seen corresponding path program 5 times [2022-11-22 02:36:52,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:52,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371831871] [2022-11-22 02:36:52,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:52,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2268 backedges. 35 proven. 2233 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:00,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:00,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371831871] [2022-11-22 02:37:00,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371831871] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:37:00,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874935245] [2022-11-22 02:37:00,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:37:00,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:37:00,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:37:00,547 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:37:00,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e324330-0040-46ae-a6d1-334f55e96c62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process