./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Cairo_step2-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/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_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Cairo_step2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/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_c62a4c57-c151-497d-a4ba-509b767cfe09/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 76fcbcb67039c0a78cfe1723cb1895d2882967fdc056ee8f9638db41d873b34f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:41:25,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:41:25,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:41:25,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:41:25,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:41:25,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:41:25,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:41:25,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:41:25,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:41:25,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:41:25,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:41:25,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:41:25,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:41:25,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:41:25,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:41:25,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:41:25,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:41:25,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:41:25,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:41:25,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:41:25,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:41:25,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:41:25,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:41:25,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:41:25,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:41:25,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:41:25,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:41:25,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:41:25,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:41:25,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:41:25,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:41:25,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:41:25,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:41:25,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:41:25,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:41:25,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:41:25,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:41:25,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:41:25,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:41:25,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:41:25,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:41:25,261 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-22 01:41:25,303 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:41:25,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:41:25,304 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:41:25,304 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:41:25,305 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:41:25,305 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:41:25,306 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:41:25,306 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:41:25,306 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:41:25,306 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:41:25,307 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:41:25,308 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:41:25,308 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:41:25,308 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:41:25,308 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:41:25,309 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:41:25,309 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:41:25,309 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:41:25,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:41:25,310 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:41:25,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:41:25,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:41:25,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:41:25,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:41:25,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:41:25,311 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 01:41:25,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:41:25,312 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:41:25,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:41:25,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:41:25,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:41:25,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:41:25,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:41:25,314 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:41:25,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:41:25,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:41:25,314 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:41:25,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:41:25,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:41:25,315 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:41:25,315 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_c62a4c57-c151-497d-a4ba-509b767cfe09/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76fcbcb67039c0a78cfe1723cb1895d2882967fdc056ee8f9638db41d873b34f [2022-11-22 01:41:25,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:41:25,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:41:25,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:41:25,628 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:41:25,629 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:41:25,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/termination-crafted/Cairo_step2-2.c [2022-11-22 01:41:28,587 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:41:28,823 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:41:28,824 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/sv-benchmarks/c/termination-crafted/Cairo_step2-2.c [2022-11-22 01:41:28,829 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/data/d390f6615/eacc1c789d3c47c9ba2ca1957489489c/FLAG8e1b782fb [2022-11-22 01:41:28,849 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/data/d390f6615/eacc1c789d3c47c9ba2ca1957489489c [2022-11-22 01:41:28,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:41:28,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:41:28,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:41:28,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:41:28,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:41:28,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:41:28" (1/1) ... [2022-11-22 01:41:28,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dfec609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:28, skipping insertion in model container [2022-11-22 01:41:28,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:41:28" (1/1) ... [2022-11-22 01:41:28,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:41:28,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:41:29,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:41:29,033 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:41:29,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:41:29,055 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:41:29,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:29 WrapperNode [2022-11-22 01:41:29,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:41:29,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:41:29,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:41:29,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:41:29,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:29" (1/1) ... [2022-11-22 01:41:29,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:29" (1/1) ... [2022-11-22 01:41:29,082 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2022-11-22 01:41:29,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:41:29,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:41:29,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:41:29,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:41:29,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:29" (1/1) ... [2022-11-22 01:41:29,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:29" (1/1) ... [2022-11-22 01:41:29,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:29" (1/1) ... [2022-11-22 01:41:29,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:29" (1/1) ... [2022-11-22 01:41:29,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:29" (1/1) ... [2022-11-22 01:41:29,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:29" (1/1) ... [2022-11-22 01:41:29,100 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:29" (1/1) ... [2022-11-22 01:41:29,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:29" (1/1) ... [2022-11-22 01:41:29,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:41:29,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:41:29,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:41:29,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:41:29,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:29" (1/1) ... [2022-11-22 01:41:29,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:41:29,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:41:29,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:41:29,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:41:29,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:41:29,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:41:29,263 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:41:29,265 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:41:29,337 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:41:29,358 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:41:29,358 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:41:29,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:41:29 BoogieIcfgContainer [2022-11-22 01:41:29,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:41:29,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:41:29,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:41:29,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:41:29,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:41:28" (1/3) ... [2022-11-22 01:41:29,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c0d03ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:41:29, skipping insertion in model container [2022-11-22 01:41:29,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:29" (2/3) ... [2022-11-22 01:41:29,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c0d03ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:41:29, skipping insertion in model container [2022-11-22 01:41:29,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:41:29" (3/3) ... [2022-11-22 01:41:29,371 INFO L112 eAbstractionObserver]: Analyzing ICFG Cairo_step2-2.c [2022-11-22 01:41:29,391 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:41:29,392 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-22 01:41:29,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:41:29,449 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;@274f69ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:41:29,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-22 01:41:29,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 8 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 01:41:29,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:41:29,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:29,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:41:29,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-22 01:41:29,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:29,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1822505, now seen corresponding path program 1 times [2022-11-22 01:41:29,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:29,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809044520] [2022-11-22 01:41:29,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:29,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:29,617 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 01:41:29,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:29,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809044520] [2022-11-22 01:41:29,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809044520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:41:29,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:41:29,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:41:29,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840727248] [2022-11-22 01:41:29,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:41:29,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:41:29,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:29,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:41:29,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:41:29,703 INFO L87 Difference]: Start difference. First operand has 9 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 8 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:29,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:29,778 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2022-11-22 01:41:29,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:41:29,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 01:41:29,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:29,789 INFO L225 Difference]: With dead ends: 9 [2022-11-22 01:41:29,802 INFO L226 Difference]: Without dead ends: 6 [2022-11-22 01:41:29,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:41:29,809 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:29,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:41:29,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-11-22 01:41:29,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-11-22 01:41:29,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:29,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2022-11-22 01:41:29,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2022-11-22 01:41:29,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:29,849 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-11-22 01:41:29,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:29,851 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-11-22 01:41:29,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:41:29,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:29,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:41:29,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:41:29,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-22 01:41:29,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:29,855 INFO L85 PathProgramCache]: Analyzing trace with hash 56497703, now seen corresponding path program 1 times [2022-11-22 01:41:29,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:29,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222348254] [2022-11-22 01:41:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:29,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:29,929 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 01:41:29,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:29,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222348254] [2022-11-22 01:41:29,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222348254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:41:29,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:41:29,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:41:29,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643393434] [2022-11-22 01:41:29,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:41:29,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:41:29,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:29,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:41:29,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:41:29,935 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:29,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:29,972 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2022-11-22 01:41:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:41:29,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 01:41:29,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:29,973 INFO L225 Difference]: With dead ends: 10 [2022-11-22 01:41:29,973 INFO L226 Difference]: Without dead ends: 9 [2022-11-22 01:41:29,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:41:29,975 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:29,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:41:29,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-22 01:41:29,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-22 01:41:29,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:29,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-22 01:41:29,980 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-22 01:41:29,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:29,980 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-22 01:41:29,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:29,980 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-22 01:41:29,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:41:29,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:29,983 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2022-11-22 01:41:29,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:41:29,984 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-22 01:41:29,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:29,987 INFO L85 PathProgramCache]: Analyzing trace with hash -504066201, now seen corresponding path program 1 times [2022-11-22 01:41:29,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:29,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264913148] [2022-11-22 01:41:29,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:29,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:30,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:30,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264913148] [2022-11-22 01:41:30,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264913148] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:41:30,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887501711] [2022-11-22 01:41:30,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:30,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:41:30,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:41:30,103 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:41:30,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:41:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:30,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:41:30,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:41:30,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:30,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:41:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:30,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887501711] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:41:30,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [808035178] [2022-11-22 01:41:30,267 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-22 01:41:30,268 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:41:30,271 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:41:30,277 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:41:30,278 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:41:30,395 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:41:30,489 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '107#(< (+ |ULTIMATE.start_main_~x~0#1| 2147483646) 0)' at error location [2022-11-22 01:41:30,489 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:41:30,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:41:30,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-22 01:41:30,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539666836] [2022-11-22 01:41:30,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:41:30,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:41:30,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:30,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:41:30,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:41:30,492 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:30,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:30,528 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-11-22 01:41:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:41:30,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 01:41:30,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:30,530 INFO L225 Difference]: With dead ends: 19 [2022-11-22 01:41:30,530 INFO L226 Difference]: Without dead ends: 18 [2022-11-22 01:41:30,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:41:30,532 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:30,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:41:30,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-22 01:41:30,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-22 01:41:30,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-22 01:41:30,537 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2022-11-22 01:41:30,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:30,538 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-22 01:41:30,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:30,538 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-22 01:41:30,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 01:41:30,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:30,539 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1] [2022-11-22 01:41:30,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 01:41:30,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:41:30,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-22 01:41:30,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:30,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1084160473, now seen corresponding path program 2 times [2022-11-22 01:41:30,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:30,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622792858] [2022-11-22 01:41:30,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:30,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:30,889 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:30,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:30,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622792858] [2022-11-22 01:41:30,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622792858] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:41:30,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523688871] [2022-11-22 01:41:30,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:41:30,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:41:30,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:41:30,893 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:41:30,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:41:30,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 01:41:30,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:41:30,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 01:41:30,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:41:30,981 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:30,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:41:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:31,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523688871] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:41:31,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1690327585] [2022-11-22 01:41:31,088 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-22 01:41:31,089 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:41:31,089 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:41:31,089 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:41:31,089 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:41:31,135 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:41:31,267 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '266#(< (+ |ULTIMATE.start_main_~x~0#1| 2147483646) 0)' at error location [2022-11-22 01:41:31,268 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:41:31,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:41:31,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-22 01:41:31,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639953313] [2022-11-22 01:41:31,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:41:31,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:41:31,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:31,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:41:31,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-11-22 01:41:31,270 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 12 states, 11 states have (on average 3.0) internal successors, (33), 12 states have internal predecessors, (33), 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 01:41:31,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:31,334 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-11-22 01:41:31,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:41:31,335 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-22 01:41:31,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:31,335 INFO L225 Difference]: With dead ends: 37 [2022-11-22 01:41:31,336 INFO L226 Difference]: Without dead ends: 36 [2022-11-22 01:41:31,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-11-22 01:41:31,337 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:31,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:41:31,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-22 01:41:31,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-22 01:41:31,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2022-11-22 01:41:31,344 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 17 [2022-11-22 01:41:31,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:31,345 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2022-11-22 01:41:31,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 12 states have internal predecessors, (33), 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 01:41:31,345 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2022-11-22 01:41:31,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-22 01:41:31,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:31,346 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1] [2022-11-22 01:41:31,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:41:31,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:41:31,552 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-22 01:41:31,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:31,553 INFO L85 PathProgramCache]: Analyzing trace with hash -269324761, now seen corresponding path program 3 times [2022-11-22 01:41:31,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:31,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646187361] [2022-11-22 01:41:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:31,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:31,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:31,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646187361] [2022-11-22 01:41:31,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646187361] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:41:31,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264146074] [2022-11-22 01:41:31,904 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:41:31,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:41:31,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:41:31,907 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:41:31,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:41:31,960 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:41:31,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:41:31,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:41:31,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:41:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:32,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:41:32,414 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:32,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264146074] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:41:32,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1385348024] [2022-11-22 01:41:32,416 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-22 01:41:32,416 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:41:32,417 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:41:32,417 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:41:32,417 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:41:32,453 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:41:32,699 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '593#(< (+ |ULTIMATE.start_main_~x~0#1| 2147483646) 0)' at error location [2022-11-22 01:41:32,699 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:41:32,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:41:32,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-22 01:41:32,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650376190] [2022-11-22 01:41:32,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:41:32,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 01:41:32,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:32,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 01:41:32,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2022-11-22 01:41:32,702 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 24 states, 23 states have (on average 3.0) internal successors, (69), 24 states have internal predecessors, (69), 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 01:41:32,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:32,848 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2022-11-22 01:41:32,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 01:41:32,849 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0) internal successors, (69), 24 states have internal predecessors, (69), 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 01:41:32,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:32,850 INFO L225 Difference]: With dead ends: 73 [2022-11-22 01:41:32,850 INFO L226 Difference]: Without dead ends: 72 [2022-11-22 01:41:32,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 77 SyntacticMatches, 12 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2022-11-22 01:41:32,852 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:32,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:41:32,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-22 01:41:32,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-11-22 01:41:32,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:32,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2022-11-22 01:41:32,863 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 35 [2022-11-22 01:41:32,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:32,863 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2022-11-22 01:41:32,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0) internal successors, (69), 24 states have internal predecessors, (69), 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 01:41:32,864 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2022-11-22 01:41:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-22 01:41:32,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:32,866 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 1, 1, 1] [2022-11-22 01:41:32,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:41:33,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:41:33,071 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-22 01:41:33,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:33,072 INFO L85 PathProgramCache]: Analyzing trace with hash -537444825, now seen corresponding path program 4 times [2022-11-22 01:41:33,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:33,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894686238] [2022-11-22 01:41:33,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:33,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:33,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:33,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894686238] [2022-11-22 01:41:33,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894686238] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:41:33,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656558403] [2022-11-22 01:41:33,667 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:41:33,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:41:33,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:41:33,669 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:41:33,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:41:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:33,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 01:41:33,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:41:33,913 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:33,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:41:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:34,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656558403] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:41:34,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [825098161] [2022-11-22 01:41:34,888 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-22 01:41:34,888 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:41:34,889 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:41:34,889 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:41:34,889 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:41:34,930 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:41:35,532 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1256#(< (+ |ULTIMATE.start_main_~x~0#1| 2147483646) 0)' at error location [2022-11-22 01:41:35,533 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:41:35,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:41:35,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-22 01:41:35,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87220321] [2022-11-22 01:41:35,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:41:35,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-22 01:41:35,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:35,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-22 01:41:35,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1140, Invalid=1512, Unknown=0, NotChecked=0, Total=2652 [2022-11-22 01:41:35,536 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 48 states, 47 states have (on average 3.0) internal successors, (141), 48 states have internal predecessors, (141), 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 01:41:35,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:35,828 INFO L93 Difference]: Finished difference Result 145 states and 168 transitions. [2022-11-22 01:41:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-22 01:41:35,829 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.0) internal successors, (141), 48 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-22 01:41:35,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:35,837 INFO L225 Difference]: With dead ends: 145 [2022-11-22 01:41:35,838 INFO L226 Difference]: Without dead ends: 144 [2022-11-22 01:41:35,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 161 SyntacticMatches, 24 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1899 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1140, Invalid=1512, Unknown=0, NotChecked=0, Total=2652 [2022-11-22 01:41:35,841 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:35,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:41:35,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-22 01:41:35,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2022-11-22 01:41:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.006993006993007) internal successors, (144), 143 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:35,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2022-11-22 01:41:35,874 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 71 [2022-11-22 01:41:35,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:35,880 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2022-11-22 01:41:35,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.0) internal successors, (141), 48 states have internal predecessors, (141), 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 01:41:35,881 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2022-11-22 01:41:35,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-22 01:41:35,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:35,887 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 1, 1, 1] [2022-11-22 01:41:35,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:41:36,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:41:36,088 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-22 01:41:36,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:36,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1316430297, now seen corresponding path program 5 times [2022-11-22 01:41:36,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:36,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396595042] [2022-11-22 01:41:36,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:36,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:38,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 3243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:38,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:38,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396595042] [2022-11-22 01:41:38,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396595042] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:41:38,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262060395] [2022-11-22 01:41:38,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:41:38,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:41:38,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:41:38,132 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:41:38,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:41:38,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-22 01:41:38,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:41:38,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-22 01:41:38,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:41:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 3243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:38,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:41:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 3243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:41,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262060395] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:41:41,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [847183320] [2022-11-22 01:41:41,817 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-22 01:41:41,817 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:41:41,818 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:41:41,818 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:41:41,818 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:41:41,870 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:41:43,605 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2591#(< (+ |ULTIMATE.start_main_~x~0#1| 2147483646) 0)' at error location [2022-11-22 01:41:43,605 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:41:43,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:41:43,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-11-22 01:41:43,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404207911] [2022-11-22 01:41:43,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:41:43,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-22 01:41:43,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:43,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-22 01:41:43,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4572, Invalid=5328, Unknown=0, NotChecked=0, Total=9900 [2022-11-22 01:41:43,613 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand has 96 states, 95 states have (on average 3.0) internal successors, (285), 96 states have internal predecessors, (285), 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 01:41:44,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:44,138 INFO L93 Difference]: Finished difference Result 289 states and 336 transitions. [2022-11-22 01:41:44,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-22 01:41:44,139 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 3.0) internal successors, (285), 96 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-11-22 01:41:44,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:44,142 INFO L225 Difference]: With dead ends: 289 [2022-11-22 01:41:44,142 INFO L226 Difference]: Without dead ends: 288 [2022-11-22 01:41:44,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 329 SyntacticMatches, 48 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7275 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=4572, Invalid=5328, Unknown=0, NotChecked=0, Total=9900 [2022-11-22 01:41:44,146 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:44,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:41:44,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-22 01:41:44,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2022-11-22 01:41:44,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.0034843205574913) internal successors, (288), 287 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:44,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 288 transitions. [2022-11-22 01:41:44,192 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 288 transitions. Word has length 143 [2022-11-22 01:41:44,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:44,193 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 288 transitions. [2022-11-22 01:41:44,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 3.0) internal successors, (285), 96 states have internal predecessors, (285), 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 01:41:44,194 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 288 transitions. [2022-11-22 01:41:44,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-11-22 01:41:44,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:44,210 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 1, 1, 1] [2022-11-22 01:41:44,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-22 01:41:44,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:41:44,411 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-22 01:41:44,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:44,411 INFO L85 PathProgramCache]: Analyzing trace with hash -892592601, now seen corresponding path program 6 times [2022-11-22 01:41:44,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:44,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369578413] [2022-11-22 01:41:44,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:44,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 13395 backedges. 0 proven. 13395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:50,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:50,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369578413] [2022-11-22 01:41:50,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369578413] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:41:50,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685624512] [2022-11-22 01:41:50,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:41:50,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:41:50,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:41:50,943 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:41:50,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 01:41:51,052 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:41:51,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:41:51,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-22 01:41:51,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:41:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 13395 backedges. 0 proven. 13395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:51,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:42:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 13395 backedges. 0 proven. 13395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:42:03,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685624512] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:42:03,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1966122022] [2022-11-22 01:42:03,253 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-22 01:42:03,254 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:42:03,254 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:42:03,254 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:42:03,254 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:42:03,296 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:42:09,249 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5270#(< (+ |ULTIMATE.start_main_~x~0#1| 2147483646) 0)' at error location [2022-11-22 01:42:09,249 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:42:09,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:42:09,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2022-11-22 01:42:09,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998320348] [2022-11-22 01:42:09,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:42:09,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-22 01:42:09,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:42:09,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-22 01:42:09,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18348, Invalid=19872, Unknown=0, NotChecked=0, Total=38220 [2022-11-22 01:42:09,264 INFO L87 Difference]: Start difference. First operand 288 states and 288 transitions. Second operand has 192 states, 191 states have (on average 3.0) internal successors, (573), 192 states have internal predecessors, (573), 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 01:42:11,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:42:11,004 INFO L93 Difference]: Finished difference Result 577 states and 672 transitions. [2022-11-22 01:42:11,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-22 01:42:11,004 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 3.0) internal successors, (573), 192 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 287 [2022-11-22 01:42:11,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:42:11,007 INFO L225 Difference]: With dead ends: 577 [2022-11-22 01:42:11,007 INFO L226 Difference]: Without dead ends: 576 [2022-11-22 01:42:11,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 955 GetRequests, 665 SyntacticMatches, 96 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28395 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=18348, Invalid=19872, Unknown=0, NotChecked=0, Total=38220 [2022-11-22 01:42:11,012 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:42:11,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 01:42:11,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-11-22 01:42:11,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2022-11-22 01:42:11,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 1.0017391304347827) internal successors, (576), 575 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:42:11,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 576 transitions. [2022-11-22 01:42:11,035 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 576 transitions. Word has length 287 [2022-11-22 01:42:11,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:42:11,036 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 576 transitions. [2022-11-22 01:42:11,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 3.0) internal successors, (573), 192 states have internal predecessors, (573), 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 01:42:11,037 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 576 transitions. [2022-11-22 01:42:11,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-11-22 01:42:11,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:42:11,048 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 190, 1, 1, 1] [2022-11-22 01:42:11,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-22 01:42:11,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-22 01:42:11,254 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-22 01:42:11,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:42:11,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1439866407, now seen corresponding path program 7 times [2022-11-22 01:42:11,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:42:11,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079051085] [2022-11-22 01:42:11,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:42:11,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:42:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:42:35,602 INFO L134 CoverageAnalysis]: Checked inductivity of 54435 backedges. 0 proven. 54435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:42:35,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:42:35,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079051085] [2022-11-22 01:42:35,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079051085] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:42:35,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121087837] [2022-11-22 01:42:35,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:42:35,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:42:35,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:42:35,611 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:42:35,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 01:42:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:42:35,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-22 01:42:35,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:42:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 54435 backedges. 0 proven. 54435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:42:36,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:43:22,203 INFO L134 CoverageAnalysis]: Checked inductivity of 54435 backedges. 0 proven. 54435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:43:22,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121087837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:43:22,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1747614590] [2022-11-22 01:43:22,205 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-22 01:43:22,205 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:43:22,206 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:43:22,206 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:43:22,206 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:43:22,241 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:43:44,688 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10637#(< (+ |ULTIMATE.start_main_~x~0#1| 2147483646) 0)' at error location [2022-11-22 01:43:44,688 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:43:44,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:43:44,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2022-11-22 01:43:44,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212366894] [2022-11-22 01:43:44,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:43:44,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-22 01:43:44,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:44,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-22 01:43:44,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73548, Invalid=76608, Unknown=0, NotChecked=0, Total=150156 [2022-11-22 01:43:44,721 INFO L87 Difference]: Start difference. First operand 576 states and 576 transitions. Second operand has 384 states, 383 states have (on average 3.0) internal successors, (1149), 384 states have internal predecessors, (1149), 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 01:43:51,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:51,381 INFO L93 Difference]: Finished difference Result 1153 states and 1344 transitions. [2022-11-22 01:43:51,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-22 01:43:51,383 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 3.0) internal successors, (1149), 384 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 575 [2022-11-22 01:43:51,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:51,387 INFO L225 Difference]: With dead ends: 1153 [2022-11-22 01:43:51,387 INFO L226 Difference]: Without dead ends: 1152 [2022-11-22 01:43:51,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1915 GetRequests, 1337 SyntacticMatches, 192 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112107 ImplicationChecksByTransitivity, 81.8s TimeCoverageRelationStatistics Valid=73548, Invalid=76608, Unknown=0, NotChecked=0, Total=150156 [2022-11-22 01:43:51,398 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:51,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 01:43:51,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2022-11-22 01:43:51,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1152. [2022-11-22 01:43:51,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1151 states have (on average 1.000868809730669) internal successors, (1152), 1151 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:43:51,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1152 transitions. [2022-11-22 01:43:51,438 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1152 transitions. Word has length 575 [2022-11-22 01:43:51,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:51,439 INFO L495 AbstractCegarLoop]: Abstraction has 1152 states and 1152 transitions. [2022-11-22 01:43:51,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 3.0) internal successors, (1149), 384 states have internal predecessors, (1149), 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 01:43:51,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1152 transitions. [2022-11-22 01:43:51,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1152 [2022-11-22 01:43:51,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:51,493 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 382, 1, 1, 1] [2022-11-22 01:43:51,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 01:43:51,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:43:51,701 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-22 01:43:51,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:51,701 INFO L85 PathProgramCache]: Analyzing trace with hash -840983001, now seen corresponding path program 8 times [2022-11-22 01:43:51,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:51,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704465912] [2022-11-22 01:43:51,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:51,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 219459 backedges. 0 proven. 219459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:53,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:45:53,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704465912] [2022-11-22 01:45:53,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704465912] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:45:53,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725176574] [2022-11-22 01:45:53,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:45:53,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:53,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:45:53,751 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:45:53,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 01:45:57,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-11-22 01:45:57,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:45:57,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 384 conjunts are in the unsatisfiable core [2022-11-22 01:45:57,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:45:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 219459 backedges. 0 proven. 219459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:45:59,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:49:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 219459 backedges. 0 proven. 219459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:49:04,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725176574] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:49:04,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [902379546] [2022-11-22 01:49:04,619 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-22 01:49:04,619 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:49:04,619 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:49:04,620 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:49:04,620 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:49:04,643 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:50:34,897 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21380#(< (+ |ULTIMATE.start_main_~x~0#1| 2147483646) 0)' at error location [2022-11-22 01:50:34,898 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:50:34,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:50:34,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 767 [2022-11-22 01:50:34,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469809117] [2022-11-22 01:50:34,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:50:34,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2022-11-22 01:50:34,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:50:34,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2022-11-22 01:50:34,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294540, Invalid=300672, Unknown=0, NotChecked=0, Total=595212 [2022-11-22 01:50:34,988 INFO L87 Difference]: Start difference. First operand 1152 states and 1152 transitions. Second operand has 768 states, 767 states have (on average 3.0) internal successors, (2301), 768 states have internal predecessors, (2301), 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 01:51:15,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:15,151 INFO L93 Difference]: Finished difference Result 2305 states and 2688 transitions. [2022-11-22 01:51:15,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2022-11-22 01:51:15,152 INFO L78 Accepts]: Start accepts. Automaton has has 768 states, 767 states have (on average 3.0) internal successors, (2301), 768 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1151 [2022-11-22 01:51:15,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:15,160 INFO L225 Difference]: With dead ends: 2305 [2022-11-22 01:51:15,160 INFO L226 Difference]: Without dead ends: 2304 [2022-11-22 01:51:15,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3835 GetRequests, 2681 SyntacticMatches, 384 SemanticMatches, 770 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445419 ImplicationChecksByTransitivity, 334.0s TimeCoverageRelationStatistics Valid=294540, Invalid=300672, Unknown=0, NotChecked=0, Total=595212 [2022-11-22 01:51:15,189 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:15,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 2312 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-22 01:51:15,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2022-11-22 01:51:15,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 2304. [2022-11-22 01:51:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2304 states, 2303 states have (on average 1.0004342162396873) internal successors, (2304), 2303 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:51:15,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 2304 transitions. [2022-11-22 01:51:15,269 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 2304 transitions. Word has length 1151 [2022-11-22 01:51:15,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:15,270 INFO L495 AbstractCegarLoop]: Abstraction has 2304 states and 2304 transitions. [2022-11-22 01:51:15,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 768 states, 767 states have (on average 3.0) internal successors, (2301), 768 states have internal predecessors, (2301), 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 01:51:15,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 2304 transitions. [2022-11-22 01:51:15,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2304 [2022-11-22 01:51:15,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:15,322 INFO L195 NwaCegarLoop]: trace histogram [767, 767, 766, 1, 1, 1] [2022-11-22 01:51:15,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 01:51:15,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62a4c57-c151-497d-a4ba-509b767cfe09/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 01:51:15,523 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-22 01:51:15,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1173986855, now seen corresponding path program 9 times [2022-11-22 01:51:15,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:15,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246967335] [2022-11-22 01:51:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:15,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat