./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/twisted.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/twisted.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur --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 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 --- 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-38b53e6 [2022-11-26 00:53:53,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:53:53,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:53:53,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:53:53,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:53:53,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:53:53,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:53:53,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:53:53,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:53:53,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:53:53,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:53:53,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:53:53,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:53:53,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:53:53,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:53:53,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:53:53,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:53:53,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:53:53,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:53:53,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:53:53,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:53:53,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:53:53,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:53:53,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:53:53,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:53:53,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:53:53,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:53:53,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:53:53,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:53:53,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:53:53,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:53:53,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:53:53,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:53:53,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:53:53,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:53:53,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:53:53,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:53:53,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:53:53,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:53:53,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:53:53,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:53:53,137 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-26 00:53:53,169 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:53:53,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:53:53,176 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:53:53,176 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:53:53,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:53:53,177 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:53:53,178 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:53:53,178 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:53:53,178 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:53:53,178 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:53:53,179 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:53:53,180 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:53:53,180 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:53:53,180 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:53:53,180 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:53:53,181 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:53:53,181 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:53:53,181 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:53:53,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:53:53,182 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:53:53,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:53:53,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:53:53,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:53:53,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:53:53,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:53:53,183 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:53:53,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:53:53,184 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:53:53,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:53:53,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:53:53,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:53:53,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:53:53,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:53:53,186 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:53:53,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:53:53,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:53:53,187 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:53:53,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:53:53,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:53:53,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:53:53,188 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_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 [2022-11-26 00:53:53,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:53:53,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:53:53,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:53:53,495 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:53:53,496 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:53:53,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/termination-numeric/twisted.c [2022-11-26 00:53:56,756 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:53:56,961 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:53:56,962 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/sv-benchmarks/c/termination-numeric/twisted.c [2022-11-26 00:53:56,969 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/data/117ac44f8/c8ab499606ae459ba448cf3baf9474a0/FLAG3a1f08ac8 [2022-11-26 00:53:56,994 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/data/117ac44f8/c8ab499606ae459ba448cf3baf9474a0 [2022-11-26 00:53:57,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:53:57,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:53:57,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:53:57,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:53:57,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:53:57,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:53:56" (1/1) ... [2022-11-26 00:53:57,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8eeea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:53:57, skipping insertion in model container [2022-11-26 00:53:57,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:53:56" (1/1) ... [2022-11-26 00:53:57,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:53:57,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:53:57,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:53:57,280 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:53:57,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:53:57,305 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:53:57,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:53:57 WrapperNode [2022-11-26 00:53:57,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:53:57,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:53:57,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:53:57,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:53:57,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:53:57" (1/1) ... [2022-11-26 00:53:57,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:53:57" (1/1) ... [2022-11-26 00:53:57,338 INFO L138 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2022-11-26 00:53:57,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:53:57,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:53:57,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:53:57,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:53:57,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:53:57" (1/1) ... [2022-11-26 00:53:57,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:53:57" (1/1) ... [2022-11-26 00:53:57,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:53:57" (1/1) ... [2022-11-26 00:53:57,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:53:57" (1/1) ... [2022-11-26 00:53:57,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:53:57" (1/1) ... [2022-11-26 00:53:57,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:53:57" (1/1) ... [2022-11-26 00:53:57,357 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:53:57" (1/1) ... [2022-11-26 00:53:57,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:53:57" (1/1) ... [2022-11-26 00:53:57,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:53:57,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:53:57,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:53:57,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:53:57,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:53:57" (1/1) ... [2022-11-26 00:53:57,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:53:57,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:53:57,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:53:57,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:53:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:53:57,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:53:57,503 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:53:57,505 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:53:57,644 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:53:57,668 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:53:57,668 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-26 00:53:57,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:53:57 BoogieIcfgContainer [2022-11-26 00:53:57,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:53:57,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:53:57,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:53:57,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:53:57,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:53:56" (1/3) ... [2022-11-26 00:53:57,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45df78f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:53:57, skipping insertion in model container [2022-11-26 00:53:57,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:53:57" (2/3) ... [2022-11-26 00:53:57,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45df78f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:53:57, skipping insertion in model container [2022-11-26 00:53:57,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:53:57" (3/3) ... [2022-11-26 00:53:57,682 INFO L112 eAbstractionObserver]: Analyzing ICFG twisted.c [2022-11-26 00:53:57,703 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:53:57,703 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-26 00:53:57,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:53:57,771 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;@8abc5cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:53:57,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-26 00:53:57,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:53:57,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:53:57,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:53:57,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:53:57,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:53:57,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:53:57,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2538354, now seen corresponding path program 1 times [2022-11-26 00:53:57,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:53:57,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21235388] [2022-11-26 00:53:57,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:53:57,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:53:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:53:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:53:57,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:53:57,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21235388] [2022-11-26 00:53:57,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21235388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:53:57,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:53:57,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:53:57,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470416837] [2022-11-26 00:53:57,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:53:58,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:53:58,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:53:58,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:53:58,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:53:58,035 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2022-11-26 00:53:58,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:53:58,107 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2022-11-26 00:53:58,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:53:58,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 [2022-11-26 00:53:58,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:53:58,119 INFO L225 Difference]: With dead ends: 38 [2022-11-26 00:53:58,119 INFO L226 Difference]: Without dead ends: 18 [2022-11-26 00:53:58,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:53:58,126 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 21 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:53:58,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 16 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:53:58,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-26 00:53:58,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-26 00:53:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 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) [2022-11-26 00:53:58,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-11-26 00:53:58,206 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 4 [2022-11-26 00:53:58,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:53:58,207 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-26 00:53:58,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2022-11-26 00:53:58,207 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-11-26 00:53:58,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:53:58,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:53:58,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:53:58,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:53:58,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:53:58,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:53:58,210 INFO L85 PathProgramCache]: Analyzing trace with hash 78689019, now seen corresponding path program 1 times [2022-11-26 00:53:58,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:53:58,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019930636] [2022-11-26 00:53:58,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:53:58,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:53:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:53:58,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:53:58,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:53:58,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019930636] [2022-11-26 00:53:58,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019930636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:53:58,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:53:58,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:53:58,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935303265] [2022-11-26 00:53:58,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:53:58,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:53:58,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:53:58,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:53:58,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:53:58,295 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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) [2022-11-26 00:53:58,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:53:58,363 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-11-26 00:53:58,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:53:58,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 [2022-11-26 00:53:58,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:53:58,365 INFO L225 Difference]: With dead ends: 34 [2022-11-26 00:53:58,365 INFO L226 Difference]: Without dead ends: 33 [2022-11-26 00:53:58,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:53:58,367 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:53:58,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 31 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:53:58,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-26 00:53:58,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2022-11-26 00:53:58,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:53:58,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2022-11-26 00:53:58,378 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 5 [2022-11-26 00:53:58,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:53:58,378 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2022-11-26 00:53:58,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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) [2022-11-26 00:53:58,379 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2022-11-26 00:53:58,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:53:58,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:53:58,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-26 00:53:58,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:53:58,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:53:58,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:53:58,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1855654287, now seen corresponding path program 1 times [2022-11-26 00:53:58,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:53:58,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084418398] [2022-11-26 00:53:58,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:53:58,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:53:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:53:58,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:53:58,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:53:58,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084418398] [2022-11-26 00:53:58,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084418398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:53:58,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:53:58,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:53:58,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168147953] [2022-11-26 00:53:58,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:53:58,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:53:58,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:53:58,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:53:58,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:53:58,478 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-26 00:53:58,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:53:58,543 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-11-26 00:53:58,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:53:58,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) Word has length 6 [2022-11-26 00:53:58,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:53:58,545 INFO L225 Difference]: With dead ends: 40 [2022-11-26 00:53:58,546 INFO L226 Difference]: Without dead ends: 39 [2022-11-26 00:53:58,546 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 [2022-11-26 00:53:58,548 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:53:58,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:53:58,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-26 00:53:58,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-11-26 00:53:58,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 31 states have internal predecessors, (42), 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) [2022-11-26 00:53:58,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2022-11-26 00:53:58,561 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 6 [2022-11-26 00:53:58,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:53:58,561 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2022-11-26 00:53:58,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-26 00:53:58,562 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2022-11-26 00:53:58,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:53:58,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:53:58,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-26 00:53:58,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:53:58,564 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:53:58,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:53:58,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1855654237, now seen corresponding path program 1 times [2022-11-26 00:53:58,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:53:58,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382075459] [2022-11-26 00:53:58,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:53:58,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:53:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:53:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:53:58,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:53:58,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382075459] [2022-11-26 00:53:58,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382075459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:53:58,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:53:58,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:53:58,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287766420] [2022-11-26 00:53:58,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:53:58,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:53:58,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:53:58,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:53:58,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:53:58,640 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2022-11-26 00:53:58,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:53:58,678 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-11-26 00:53:58,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:53:58,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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) Word has length 6 [2022-11-26 00:53:58,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:53:58,680 INFO L225 Difference]: With dead ends: 32 [2022-11-26 00:53:58,680 INFO L226 Difference]: Without dead ends: 31 [2022-11-26 00:53:58,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:53:58,683 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 17 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:53:58,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 22 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:53:58,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-26 00:53:58,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-26 00:53:58,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:53:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2022-11-26 00:53:58,695 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 6 [2022-11-26 00:53:58,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:53:58,695 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2022-11-26 00:53:58,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2022-11-26 00:53:58,696 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2022-11-26 00:53:58,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:53:58,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:53:58,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:53:58,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:53:58,702 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:53:58,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:53:58,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1690707972, now seen corresponding path program 1 times [2022-11-26 00:53:58,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:53:58,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756043862] [2022-11-26 00:53:58,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:53:58,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:53:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:53:58,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:53:58,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:53:58,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756043862] [2022-11-26 00:53:58,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756043862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:53:58,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:53:58,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:53:58,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099361817] [2022-11-26 00:53:58,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:53:58,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:53:58,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:53:58,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:53:58,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:53:58,787 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-26 00:53:58,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:53:58,846 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-11-26 00:53:58,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:53:58,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-11-26 00:53:58,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:53:58,857 INFO L225 Difference]: With dead ends: 38 [2022-11-26 00:53:58,858 INFO L226 Difference]: Without dead ends: 35 [2022-11-26 00:53:58,859 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 [2022-11-26 00:53:58,861 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:53:58,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 20 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:53:58,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-26 00:53:58,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2022-11-26 00:53:58,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 29 states have internal predecessors, (38), 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) [2022-11-26 00:53:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-11-26 00:53:58,885 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 7 [2022-11-26 00:53:58,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:53:58,888 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-11-26 00:53:58,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-26 00:53:58,889 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-11-26 00:53:58,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:53:58,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:53:58,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:53:58,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:53:58,893 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:53:58,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:53:58,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1690706434, now seen corresponding path program 1 times [2022-11-26 00:53:58,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:53:58,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506377874] [2022-11-26 00:53:58,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:53:58,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:53:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:53:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:53:58,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:53:58,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506377874] [2022-11-26 00:53:58,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506377874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:53:58,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:53:58,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:53:58,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543872604] [2022-11-26 00:53:58,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:53:58,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:53:58,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:53:58,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:53:58,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:53:58,961 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-26 00:53:59,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:53:59,032 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2022-11-26 00:53:59,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:53:59,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-11-26 00:53:59,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:53:59,034 INFO L225 Difference]: With dead ends: 48 [2022-11-26 00:53:59,034 INFO L226 Difference]: Without dead ends: 47 [2022-11-26 00:53:59,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:53:59,036 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:53:59,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 36 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:53:59,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-26 00:53:59,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2022-11-26 00:53:59,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 41 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:53:59,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2022-11-26 00:53:59,048 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 7 [2022-11-26 00:53:59,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:53:59,048 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2022-11-26 00:53:59,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-26 00:53:59,049 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2022-11-26 00:53:59,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:53:59,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:53:59,050 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-26 00:53:59,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:53:59,051 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:53:59,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:53:59,052 INFO L85 PathProgramCache]: Analyzing trace with hash 116338326, now seen corresponding path program 1 times [2022-11-26 00:53:59,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:53:59,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355577337] [2022-11-26 00:53:59,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:53:59,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:53:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:53:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:53:59,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:53:59,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355577337] [2022-11-26 00:53:59,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355577337] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:53:59,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296725736] [2022-11-26 00:53:59,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:53:59,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:53:59,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:53:59,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:53:59,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:53:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:53:59,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:53:59,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:53:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:53:59,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:53:59,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:53:59,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296725736] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:53:59,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [338633926] [2022-11-26 00:53:59,426 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-26 00:53:59,426 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:53:59,431 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:53:59,437 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:53:59,437 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:53:59,796 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:54:00,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [338633926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:54:00,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:54:00,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4] total 12 [2022-11-26 00:54:00,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192515394] [2022-11-26 00:54:00,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:54:00,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:54:00,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:00,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:54:00,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:54:00,122 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2022-11-26 00:54:00,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:00,507 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-11-26 00:54:00,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:54:00,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-26 00:54:00,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:00,509 INFO L225 Difference]: With dead ends: 47 [2022-11-26 00:54:00,509 INFO L226 Difference]: Without dead ends: 42 [2022-11-26 00:54:00,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:54:00,511 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:00,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 35 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:54:00,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-26 00:54:00,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2022-11-26 00:54:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 39 states have internal predecessors, (50), 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) [2022-11-26 00:54:00,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2022-11-26 00:54:00,524 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 9 [2022-11-26 00:54:00,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:00,524 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2022-11-26 00:54:00,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2022-11-26 00:54:00,524 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2022-11-26 00:54:00,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 00:54:00,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:00,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:54:00,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:54:00,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-26 00:54:00,735 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:00,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:00,736 INFO L85 PathProgramCache]: Analyzing trace with hash -753827850, now seen corresponding path program 1 times [2022-11-26 00:54:00,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:00,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757880037] [2022-11-26 00:54:00,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:00,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:00,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:00,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:00,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757880037] [2022-11-26 00:54:00,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757880037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:00,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034324113] [2022-11-26 00:54:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:00,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:00,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:00,867 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:00,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:54:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:00,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:54:00,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:00,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:54:00,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034324113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:54:00,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:54:00,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2022-11-26 00:54:00,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41277604] [2022-11-26 00:54:00,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:54:00,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:54:00,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:00,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:54:00,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:54:00,994 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2022-11-26 00:54:01,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:01,085 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2022-11-26 00:54:01,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:54:01,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-26 00:54:01,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:01,087 INFO L225 Difference]: With dead ends: 47 [2022-11-26 00:54:01,087 INFO L226 Difference]: Without dead ends: 46 [2022-11-26 00:54:01,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:54:01,088 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:01,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 30 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:54:01,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-26 00:54:01,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2022-11-26 00:54:01,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:01,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-11-26 00:54:01,110 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 10 [2022-11-26 00:54:01,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:01,110 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-11-26 00:54:01,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2022-11-26 00:54:01,111 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-11-26 00:54:01,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:54:01,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:01,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:54:01,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:54:01,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:01,318 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:01,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:01,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1893826793, now seen corresponding path program 1 times [2022-11-26 00:54:01,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:01,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841313361] [2022-11-26 00:54:01,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:01,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:01,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:01,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:01,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841313361] [2022-11-26 00:54:01,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841313361] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:01,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652802750] [2022-11-26 00:54:01,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:01,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:01,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:01,372 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:01,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:54:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:01,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:54:01,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:01,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:54:01,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:01,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652802750] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:54:01,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1421796192] [2022-11-26 00:54:01,541 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-26 00:54:01,542 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:54:01,542 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:54:01,543 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:54:01,543 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:54:01,603 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:54:01,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1421796192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:54:01,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:54:01,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 14 [2022-11-26 00:54:01,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374289524] [2022-11-26 00:54:01,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:54:01,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:54:01,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:01,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:54:01,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:54:01,890 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2022-11-26 00:54:01,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:01,991 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2022-11-26 00:54:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:54:01,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-26 00:54:01,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:01,994 INFO L225 Difference]: With dead ends: 79 [2022-11-26 00:54:01,995 INFO L226 Difference]: Without dead ends: 51 [2022-11-26 00:54:01,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:54:01,999 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:02,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:54:02,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-26 00:54:02,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2022-11-26 00:54:02,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 45 states have internal predecessors, (56), 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) [2022-11-26 00:54:02,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2022-11-26 00:54:02,012 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 11 [2022-11-26 00:54:02,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:02,012 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2022-11-26 00:54:02,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2022-11-26 00:54:02,013 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2022-11-26 00:54:02,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-26 00:54:02,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:02,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:54:02,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-26 00:54:02,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:02,219 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:02,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:02,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1862452426, now seen corresponding path program 1 times [2022-11-26 00:54:02,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:02,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773352562] [2022-11-26 00:54:02,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:02,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:02,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:02,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773352562] [2022-11-26 00:54:02,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773352562] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:02,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658137994] [2022-11-26 00:54:02,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:02,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:02,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:02,313 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:02,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:54:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:02,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:54:02,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:02,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:54:02,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658137994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:54:02,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:54:02,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2022-11-26 00:54:02,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301045694] [2022-11-26 00:54:02,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:54:02,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:54:02,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:02,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:54:02,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:54:02,485 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:02,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:02,673 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2022-11-26 00:54:02,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:54:02,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-26 00:54:02,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:02,675 INFO L225 Difference]: With dead ends: 64 [2022-11-26 00:54:02,675 INFO L226 Difference]: Without dead ends: 63 [2022-11-26 00:54:02,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-26 00:54:02,677 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 34 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:02,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 36 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:54:02,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-26 00:54:02,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2022-11-26 00:54:02,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 55 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) [2022-11-26 00:54:02,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2022-11-26 00:54:02,699 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 13 [2022-11-26 00:54:02,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:02,699 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2022-11-26 00:54:02,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:02,700 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2022-11-26 00:54:02,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-26 00:54:02,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:02,701 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-26 00:54:02,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:54:02,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-26 00:54:02,907 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:02,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:02,907 INFO L85 PathProgramCache]: Analyzing trace with hash 779135154, now seen corresponding path program 1 times [2022-11-26 00:54:02,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:02,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148006066] [2022-11-26 00:54:02,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:02,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:02,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:02,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:02,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148006066] [2022-11-26 00:54:02,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148006066] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:02,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628141281] [2022-11-26 00:54:02,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:02,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:02,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:02,990 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:03,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-26 00:54:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:03,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:54:03,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:03,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:03,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:54:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:03,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628141281] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:54:03,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1620516182] [2022-11-26 00:54:03,122 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-26 00:54:03,122 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:54:03,122 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:54:03,123 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:54:03,123 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:54:03,439 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:54:04,039 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1522#(and (<= 0 |ULTIMATE.start_f_#in~l#1|) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= |ULTIMATE.start_f_~k#1| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (< 2147483646 |ULTIMATE.start_f_#t~post1#1|) (<= |ULTIMATE.start_f_#in~k#1| 0) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (= |ULTIMATE.start_f_~i~0#1| 0) (<= |ULTIMATE.start_main_#t~nondet2#1| 0) (<= 0 |ULTIMATE.start_main_#t~nondet3#1|) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~l#1| 2147483647))' at error location [2022-11-26 00:54:04,039 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:54:04,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:54:04,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-26 00:54:04,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863377029] [2022-11-26 00:54:04,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:54:04,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:54:04,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:04,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:54:04,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:54:04,041 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:04,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:04,160 INFO L93 Difference]: Finished difference Result 141 states and 188 transitions. [2022-11-26 00:54:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:54:04,161 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-26 00:54:04,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:04,162 INFO L225 Difference]: With dead ends: 141 [2022-11-26 00:54:04,162 INFO L226 Difference]: Without dead ends: 140 [2022-11-26 00:54:04,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:54:04,163 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:04,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 82 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:54:04,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-26 00:54:04,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2022-11-26 00:54:04,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 120 states have (on average 1.4166666666666667) internal successors, (170), 123 states have internal predecessors, (170), 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) [2022-11-26 00:54:04,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 170 transitions. [2022-11-26 00:54:04,179 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 170 transitions. Word has length 14 [2022-11-26 00:54:04,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:04,179 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 170 transitions. [2022-11-26 00:54:04,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:04,180 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 170 transitions. [2022-11-26 00:54:04,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-26 00:54:04,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:04,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:54:04,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:54:04,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:04,386 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:04,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:04,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1901450281, now seen corresponding path program 1 times [2022-11-26 00:54:04,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:04,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747420661] [2022-11-26 00:54:04,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:04,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:04,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:04,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:04,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747420661] [2022-11-26 00:54:04,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747420661] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:04,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595755682] [2022-11-26 00:54:04,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:04,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:04,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:04,467 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:04,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-26 00:54:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:04,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:54:04,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:04,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:54:04,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:04,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595755682] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:54:04,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [571933891] [2022-11-26 00:54:04,728 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:54:04,728 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:54:04,729 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:54:04,729 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:54:04,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:54:04,767 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:54:04,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [571933891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:54:04,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:54:04,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 19 [2022-11-26 00:54:04,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805327097] [2022-11-26 00:54:04,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:54:04,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:54:04,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:04,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:54:04,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:54:04,945 INFO L87 Difference]: Start difference. First operand 124 states and 170 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:05,018 INFO L93 Difference]: Finished difference Result 183 states and 249 transitions. [2022-11-26 00:54:05,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:54:05,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-26 00:54:05,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:05,022 INFO L225 Difference]: With dead ends: 183 [2022-11-26 00:54:05,022 INFO L226 Difference]: Without dead ends: 134 [2022-11-26 00:54:05,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:54:05,024 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:05,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 32 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:54:05,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-26 00:54:05,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 127. [2022-11-26 00:54:05,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 123 states have (on average 1.4065040650406504) internal successors, (173), 126 states have internal predecessors, (173), 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) [2022-11-26 00:54:05,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 173 transitions. [2022-11-26 00:54:05,054 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 173 transitions. Word has length 14 [2022-11-26 00:54:05,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:05,054 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 173 transitions. [2022-11-26 00:54:05,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:05,055 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 173 transitions. [2022-11-26 00:54:05,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-26 00:54:05,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:05,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:54:05,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-26 00:54:05,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-26 00:54:05,266 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:05,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:05,267 INFO L85 PathProgramCache]: Analyzing trace with hash 280664690, now seen corresponding path program 1 times [2022-11-26 00:54:05,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:05,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110736629] [2022-11-26 00:54:05,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:05,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:05,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:05,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:05,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110736629] [2022-11-26 00:54:05,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110736629] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:05,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331709540] [2022-11-26 00:54:05,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:05,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:05,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:05,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:05,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 00:54:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:05,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:54:05,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:05,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:54:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:05,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331709540] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:54:05,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [284443488] [2022-11-26 00:54:05,615 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:54:05,615 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:54:05,616 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:54:05,616 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:54:05,616 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:54:05,824 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:54:06,925 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2539#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|))' at error location [2022-11-26 00:54:06,925 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:54:06,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:54:06,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-26 00:54:06,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899355559] [2022-11-26 00:54:06,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:54:06,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-26 00:54:06,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:06,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-26 00:54:06,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2022-11-26 00:54:06,927 INFO L87 Difference]: Start difference. First operand 127 states and 173 transitions. Second operand has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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) [2022-11-26 00:54:07,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:07,307 INFO L93 Difference]: Finished difference Result 240 states and 323 transitions. [2022-11-26 00:54:07,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-26 00:54:07,308 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-26 00:54:07,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:07,309 INFO L225 Difference]: With dead ends: 240 [2022-11-26 00:54:07,309 INFO L226 Difference]: Without dead ends: 229 [2022-11-26 00:54:07,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=293, Invalid=1267, Unknown=0, NotChecked=0, Total=1560 [2022-11-26 00:54:07,311 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 81 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:07,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 48 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:54:07,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-26 00:54:07,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 193. [2022-11-26 00:54:07,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 189 states have (on average 1.3862433862433863) internal successors, (262), 192 states have internal predecessors, (262), 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) [2022-11-26 00:54:07,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 262 transitions. [2022-11-26 00:54:07,333 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 262 transitions. Word has length 15 [2022-11-26 00:54:07,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:07,333 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 262 transitions. [2022-11-26 00:54:07,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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) [2022-11-26 00:54:07,334 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 262 transitions. [2022-11-26 00:54:07,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-26 00:54:07,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:07,336 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:54:07,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-26 00:54:07,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-26 00:54:07,542 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:07,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:07,542 INFO L85 PathProgramCache]: Analyzing trace with hash 111798964, now seen corresponding path program 1 times [2022-11-26 00:54:07,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:07,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809796556] [2022-11-26 00:54:07,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:07,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:54:07,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:07,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809796556] [2022-11-26 00:54:07,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809796556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:54:07,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:54:07,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:54:07,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777735668] [2022-11-26 00:54:07,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:54:07,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:54:07,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:07,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:54:07,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:54:07,565 INFO L87 Difference]: Start difference. First operand 193 states and 262 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:07,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:07,597 INFO L93 Difference]: Finished difference Result 297 states and 400 transitions. [2022-11-26 00:54:07,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:54:07,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-26 00:54:07,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:07,599 INFO L225 Difference]: With dead ends: 297 [2022-11-26 00:54:07,599 INFO L226 Difference]: Without dead ends: 180 [2022-11-26 00:54:07,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:54:07,600 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:07,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 27 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:54:07,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-26 00:54:07,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 149. [2022-11-26 00:54:07,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 146 states have (on average 1.2945205479452055) internal successors, (189), 148 states have internal predecessors, (189), 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) [2022-11-26 00:54:07,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 189 transitions. [2022-11-26 00:54:07,618 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 189 transitions. Word has length 16 [2022-11-26 00:54:07,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:07,619 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 189 transitions. [2022-11-26 00:54:07,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:07,619 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 189 transitions. [2022-11-26 00:54:07,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-26 00:54:07,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:07,620 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:54:07,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-26 00:54:07,620 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:07,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:07,621 INFO L85 PathProgramCache]: Analyzing trace with hash 465927114, now seen corresponding path program 1 times [2022-11-26 00:54:07,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:07,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948999079] [2022-11-26 00:54:07,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:07,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:07,687 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:07,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:07,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948999079] [2022-11-26 00:54:07,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948999079] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:07,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678268679] [2022-11-26 00:54:07,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:07,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:07,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:07,689 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:07,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-26 00:54:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:07,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:54:07,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:07,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:54:07,848 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:07,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678268679] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:54:07,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [172965579] [2022-11-26 00:54:07,850 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-26 00:54:07,850 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:54:07,851 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:54:07,851 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:54:07,851 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:54:08,091 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:54:08,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [172965579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:54:08,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:54:08,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 6, 6] total 19 [2022-11-26 00:54:08,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191835983] [2022-11-26 00:54:08,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:54:08,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:54:08,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:08,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:54:08,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-11-26 00:54:08,903 INFO L87 Difference]: Start difference. First operand 149 states and 189 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:09,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:09,577 INFO L93 Difference]: Finished difference Result 269 states and 347 transitions. [2022-11-26 00:54:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:54:09,577 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-26 00:54:09,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:09,579 INFO L225 Difference]: With dead ends: 269 [2022-11-26 00:54:09,579 INFO L226 Difference]: Without dead ends: 212 [2022-11-26 00:54:09,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2022-11-26 00:54:09,586 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 49 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:09,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 49 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:54:09,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-26 00:54:09,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 156. [2022-11-26 00:54:09,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 154 states have (on average 1.2402597402597402) internal successors, (191), 155 states have internal predecessors, (191), 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) [2022-11-26 00:54:09,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 191 transitions. [2022-11-26 00:54:09,618 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 191 transitions. Word has length 19 [2022-11-26 00:54:09,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:09,619 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 191 transitions. [2022-11-26 00:54:09,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:09,619 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 191 transitions. [2022-11-26 00:54:09,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-26 00:54:09,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:09,620 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:54:09,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-26 00:54:09,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-26 00:54:09,826 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:09,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:09,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1291717928, now seen corresponding path program 2 times [2022-11-26 00:54:09,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:09,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592743689] [2022-11-26 00:54:09,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:09,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:09,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:09,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592743689] [2022-11-26 00:54:09,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592743689] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:09,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165226128] [2022-11-26 00:54:09,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:54:09,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:09,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:09,991 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:10,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-26 00:54:10,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-26 00:54:10,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:54:10,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-26 00:54:10,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:10,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:54:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:10,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165226128] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:54:10,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [69664230] [2022-11-26 00:54:10,385 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:54:10,385 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:54:10,385 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:54:10,386 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:54:10,386 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:54:10,586 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:54:11,674 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4786#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|))' at error location [2022-11-26 00:54:11,675 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:54:11,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:54:11,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-11-26 00:54:11,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017983131] [2022-11-26 00:54:11,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:54:11,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-26 00:54:11,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:11,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-26 00:54:11,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1279, Unknown=0, NotChecked=0, Total=1560 [2022-11-26 00:54:11,677 INFO L87 Difference]: Start difference. First operand 156 states and 191 transitions. Second operand has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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) [2022-11-26 00:54:12,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:12,278 INFO L93 Difference]: Finished difference Result 253 states and 305 transitions. [2022-11-26 00:54:12,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-26 00:54:12,278 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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 23 [2022-11-26 00:54:12,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:12,279 INFO L225 Difference]: With dead ends: 253 [2022-11-26 00:54:12,280 INFO L226 Difference]: Without dead ends: 240 [2022-11-26 00:54:12,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=650, Invalid=2542, Unknown=0, NotChecked=0, Total=3192 [2022-11-26 00:54:12,287 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 172 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:12,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 52 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:54:12,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-26 00:54:12,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 215. [2022-11-26 00:54:12,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 213 states have (on average 1.2206572769953052) internal successors, (260), 214 states have internal predecessors, (260), 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) [2022-11-26 00:54:12,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 260 transitions. [2022-11-26 00:54:12,329 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 260 transitions. Word has length 23 [2022-11-26 00:54:12,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:12,330 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 260 transitions. [2022-11-26 00:54:12,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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) [2022-11-26 00:54:12,330 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 260 transitions. [2022-11-26 00:54:12,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-26 00:54:12,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:12,331 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:54:12,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-26 00:54:12,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-26 00:54:12,535 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:12,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:12,535 INFO L85 PathProgramCache]: Analyzing trace with hash -143122264, now seen corresponding path program 3 times [2022-11-26 00:54:12,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:12,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919612591] [2022-11-26 00:54:12,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:12,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:12,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:12,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919612591] [2022-11-26 00:54:12,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919612591] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:12,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318880046] [2022-11-26 00:54:12,674 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:54:12,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:12,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:12,675 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:12,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-26 00:54:12,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:54:12,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:54:12,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-26 00:54:12,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:12,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:54:13,102 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:13,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318880046] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:54:13,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1649254942] [2022-11-26 00:54:13,105 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:54:13,105 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:54:13,105 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:54:13,106 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:54:13,106 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:54:13,308 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:54:14,409 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5696#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|))' at error location [2022-11-26 00:54:14,409 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:54:14,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:54:14,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-11-26 00:54:14,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721900721] [2022-11-26 00:54:14,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:54:14,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-26 00:54:14,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:14,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-26 00:54:14,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1270, Unknown=0, NotChecked=0, Total=1560 [2022-11-26 00:54:14,412 INFO L87 Difference]: Start difference. First operand 215 states and 260 transitions. Second operand has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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) [2022-11-26 00:54:15,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:15,038 INFO L93 Difference]: Finished difference Result 322 states and 389 transitions. [2022-11-26 00:54:15,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-26 00:54:15,039 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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 23 [2022-11-26 00:54:15,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:15,040 INFO L225 Difference]: With dead ends: 322 [2022-11-26 00:54:15,040 INFO L226 Difference]: Without dead ends: 307 [2022-11-26 00:54:15,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=623, Invalid=2683, Unknown=0, NotChecked=0, Total=3306 [2022-11-26 00:54:15,042 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 177 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:15,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 56 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:54:15,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-26 00:54:15,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 225. [2022-11-26 00:54:15,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 223 states have (on average 1.2286995515695067) internal successors, (274), 224 states have internal predecessors, (274), 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) [2022-11-26 00:54:15,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 274 transitions. [2022-11-26 00:54:15,086 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 274 transitions. Word has length 23 [2022-11-26 00:54:15,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:15,086 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 274 transitions. [2022-11-26 00:54:15,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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) [2022-11-26 00:54:15,087 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 274 transitions. [2022-11-26 00:54:15,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-26 00:54:15,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:15,088 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 1, 1, 1] [2022-11-26 00:54:15,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-26 00:54:15,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-26 00:54:15,293 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:15,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:15,293 INFO L85 PathProgramCache]: Analyzing trace with hash -992878717, now seen corresponding path program 1 times [2022-11-26 00:54:15,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:15,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586674726] [2022-11-26 00:54:15,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:15,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:15,429 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:15,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:15,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586674726] [2022-11-26 00:54:15,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586674726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:15,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427641396] [2022-11-26 00:54:15,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:15,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:15,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:15,432 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:15,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-26 00:54:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:15,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-26 00:54:15,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:15,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:54:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:15,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427641396] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:54:15,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1712787865] [2022-11-26 00:54:15,685 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-26 00:54:15,685 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:54:15,686 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:54:15,686 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:54:15,686 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:54:15,856 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:54:16,414 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6740#(and (<= 0 |ULTIMATE.start_f_#in~l#1|) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= |ULTIMATE.start_f_~k#1| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (< 2147483646 |ULTIMATE.start_f_#t~post1#1|) (<= |ULTIMATE.start_f_#in~k#1| 0) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (= |ULTIMATE.start_f_~i~0#1| 0) (<= |ULTIMATE.start_main_#t~nondet2#1| 0) (<= 0 |ULTIMATE.start_main_#t~nondet3#1|) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~l#1| 2147483647))' at error location [2022-11-26 00:54:16,415 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:54:16,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:54:16,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2022-11-26 00:54:16,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463746564] [2022-11-26 00:54:16,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:54:16,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-26 00:54:16,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:16,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-26 00:54:16,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2022-11-26 00:54:16,417 INFO L87 Difference]: Start difference. First operand 225 states and 274 transitions. Second operand has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:16,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:16,789 INFO L93 Difference]: Finished difference Result 439 states and 534 transitions. [2022-11-26 00:54:16,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-26 00:54:16,789 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-26 00:54:16,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:16,795 INFO L225 Difference]: With dead ends: 439 [2022-11-26 00:54:16,795 INFO L226 Difference]: Without dead ends: 438 [2022-11-26 00:54:16,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=325, Invalid=1081, Unknown=0, NotChecked=0, Total=1406 [2022-11-26 00:54:16,801 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 196 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:16,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 166 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:54:16,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-26 00:54:16,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 352. [2022-11-26 00:54:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 350 states have (on average 1.2485714285714287) internal successors, (437), 351 states have internal predecessors, (437), 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) [2022-11-26 00:54:16,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 437 transitions. [2022-11-26 00:54:16,861 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 437 transitions. Word has length 26 [2022-11-26 00:54:16,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:16,862 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 437 transitions. [2022-11-26 00:54:16,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:54:16,862 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 437 transitions. [2022-11-26 00:54:16,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-26 00:54:16,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:16,863 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:54:16,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-26 00:54:17,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-26 00:54:17,069 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:17,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:17,070 INFO L85 PathProgramCache]: Analyzing trace with hash 211043230, now seen corresponding path program 4 times [2022-11-26 00:54:17,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:17,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286934679] [2022-11-26 00:54:17,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:17,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:17,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:17,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286934679] [2022-11-26 00:54:17,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286934679] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:17,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629799665] [2022-11-26 00:54:17,337 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 00:54:17,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:17,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:17,338 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:17,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-26 00:54:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:17,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-26 00:54:17,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:17,668 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:17,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:54:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:17,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629799665] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:54:17,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [122056640] [2022-11-26 00:54:17,953 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:54:17,953 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:54:17,954 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:54:17,954 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:54:17,954 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:54:18,148 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:54:19,368 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8183#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|))' at error location [2022-11-26 00:54:19,368 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:54:19,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:54:19,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-11-26 00:54:19,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51361879] [2022-11-26 00:54:19,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:54:19,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-26 00:54:19,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:19,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-26 00:54:19,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=2179, Unknown=0, NotChecked=0, Total=2652 [2022-11-26 00:54:19,372 INFO L87 Difference]: Start difference. First operand 352 states and 437 transitions. Second operand has 41 states, 40 states have (on average 2.325) internal successors, (93), 40 states have internal predecessors, (93), 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) [2022-11-26 00:54:20,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:20,388 INFO L93 Difference]: Finished difference Result 507 states and 616 transitions. [2022-11-26 00:54:20,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-26 00:54:20,389 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.325) internal successors, (93), 40 states have internal predecessors, (93), 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 31 [2022-11-26 00:54:20,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:20,391 INFO L225 Difference]: With dead ends: 507 [2022-11-26 00:54:20,391 INFO L226 Difference]: Without dead ends: 492 [2022-11-26 00:54:20,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2563 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1260, Invalid=4902, Unknown=0, NotChecked=0, Total=6162 [2022-11-26 00:54:20,394 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 256 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:20,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 85 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:54:20,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-11-26 00:54:20,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 384. [2022-11-26 00:54:20,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 382 states have (on average 1.2225130890052356) internal successors, (467), 383 states have internal predecessors, (467), 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) [2022-11-26 00:54:20,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 467 transitions. [2022-11-26 00:54:20,521 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 467 transitions. Word has length 31 [2022-11-26 00:54:20,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:20,521 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 467 transitions. [2022-11-26 00:54:20,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.325) internal successors, (93), 40 states have internal predecessors, (93), 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) [2022-11-26 00:54:20,522 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 467 transitions. [2022-11-26 00:54:20,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-26 00:54:20,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:20,523 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-26 00:54:20,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-26 00:54:20,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:20,729 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:20,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:20,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1287940505, now seen corresponding path program 1 times [2022-11-26 00:54:20,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:20,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171495023] [2022-11-26 00:54:20,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:20,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:20,928 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:20,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:20,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171495023] [2022-11-26 00:54:20,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171495023] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:20,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609605982] [2022-11-26 00:54:20,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:20,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:20,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:20,930 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:20,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-26 00:54:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:20,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-26 00:54:20,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:21,294 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:21,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:54:21,587 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:21,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609605982] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:54:21,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1538261360] [2022-11-26 00:54:21,589 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:54:21,590 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:54:21,590 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:54:21,590 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:54:21,590 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:54:21,950 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:54:23,023 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9845#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_f_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 |ULTIMATE.start_f_~k#1|) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-26 00:54:23,023 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:54:23,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:54:23,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-11-26 00:54:23,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569088693] [2022-11-26 00:54:23,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:54:23,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-26 00:54:23,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:23,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-26 00:54:23,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=2175, Unknown=0, NotChecked=0, Total=2550 [2022-11-26 00:54:23,025 INFO L87 Difference]: Start difference. First operand 384 states and 467 transitions. Second operand has 41 states, 40 states have (on average 2.55) internal successors, (102), 40 states have internal predecessors, (102), 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) [2022-11-26 00:54:24,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:24,072 INFO L93 Difference]: Finished difference Result 622 states and 747 transitions. [2022-11-26 00:54:24,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-26 00:54:24,072 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.55) internal successors, (102), 40 states have internal predecessors, (102), 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 34 [2022-11-26 00:54:24,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:24,075 INFO L225 Difference]: With dead ends: 622 [2022-11-26 00:54:24,075 INFO L226 Difference]: Without dead ends: 609 [2022-11-26 00:54:24,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2588 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1115, Invalid=5205, Unknown=0, NotChecked=0, Total=6320 [2022-11-26 00:54:24,078 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 236 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:24,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 74 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:54:24,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-11-26 00:54:24,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 449. [2022-11-26 00:54:24,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 447 states have (on average 1.2192393736017897) internal successors, (545), 448 states have internal predecessors, (545), 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) [2022-11-26 00:54:24,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 545 transitions. [2022-11-26 00:54:24,159 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 545 transitions. Word has length 34 [2022-11-26 00:54:24,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:24,160 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 545 transitions. [2022-11-26 00:54:24,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.55) internal successors, (102), 40 states have internal predecessors, (102), 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) [2022-11-26 00:54:24,160 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 545 transitions. [2022-11-26 00:54:24,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-26 00:54:24,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:24,161 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:54:24,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-26 00:54:24,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:24,367 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:24,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:24,368 INFO L85 PathProgramCache]: Analyzing trace with hash -871514643, now seen corresponding path program 1 times [2022-11-26 00:54:24,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:24,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707032025] [2022-11-26 00:54:24,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:24,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:24,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:24,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707032025] [2022-11-26 00:54:24,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707032025] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:24,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245597838] [2022-11-26 00:54:24,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:24,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:24,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:24,730 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:24,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-26 00:54:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:24,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-26 00:54:24,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:25,226 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:25,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:54:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:25,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245597838] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:54:25,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [487819501] [2022-11-26 00:54:25,698 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:54:25,698 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:54:25,698 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:54:25,698 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:54:25,698 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:54:26,202 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:54:27,646 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11863#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-26 00:54:27,646 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:54:27,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:54:27,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2022-11-26 00:54:27,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052125848] [2022-11-26 00:54:27,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:54:27,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-26 00:54:27,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:27,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-26 00:54:27,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=3853, Unknown=0, NotChecked=0, Total=4556 [2022-11-26 00:54:27,650 INFO L87 Difference]: Start difference. First operand 449 states and 545 transitions. Second operand has 59 states, 58 states have (on average 2.3275862068965516) internal successors, (135), 58 states have internal predecessors, (135), 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) [2022-11-26 00:54:29,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:29,396 INFO L93 Difference]: Finished difference Result 986 states and 1170 transitions. [2022-11-26 00:54:29,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-26 00:54:29,396 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.3275862068965516) internal successors, (135), 58 states have internal predecessors, (135), 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 45 [2022-11-26 00:54:29,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:29,400 INFO L225 Difference]: With dead ends: 986 [2022-11-26 00:54:29,400 INFO L226 Difference]: Without dead ends: 967 [2022-11-26 00:54:29,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 75 SyntacticMatches, 11 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5529 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2389, Invalid=9821, Unknown=0, NotChecked=0, Total=12210 [2022-11-26 00:54:29,404 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 429 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:29,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 101 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:54:29,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2022-11-26 00:54:29,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 715. [2022-11-26 00:54:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 713 states have (on average 1.2033660589060309) internal successors, (858), 714 states have internal predecessors, (858), 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) [2022-11-26 00:54:29,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 858 transitions. [2022-11-26 00:54:29,520 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 858 transitions. Word has length 45 [2022-11-26 00:54:29,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:29,521 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 858 transitions. [2022-11-26 00:54:29,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.3275862068965516) internal successors, (135), 58 states have internal predecessors, (135), 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) [2022-11-26 00:54:29,521 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 858 transitions. [2022-11-26 00:54:29,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-26 00:54:29,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:29,523 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-26 00:54:29,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-26 00:54:29,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:29,725 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:29,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:29,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1643921960, now seen corresponding path program 2 times [2022-11-26 00:54:29,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:29,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474352773] [2022-11-26 00:54:29,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:29,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:30,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:30,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474352773] [2022-11-26 00:54:30,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474352773] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:30,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618118980] [2022-11-26 00:54:30,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:54:30,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:30,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:30,125 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:30,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-26 00:54:30,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-26 00:54:30,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:54:30,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-26 00:54:30,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:30,275 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 59 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-26 00:54:30,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:54:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 59 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-26 00:54:30,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618118980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:54:30,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1091110659] [2022-11-26 00:54:30,324 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:54:30,324 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:54:30,324 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:54:30,325 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:54:30,325 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:54:30,692 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:54:32,002 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14845#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_f_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 |ULTIMATE.start_f_~k#1|) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-26 00:54:32,003 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:54:32,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:54:32,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6, 6] total 25 [2022-11-26 00:54:32,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721312069] [2022-11-26 00:54:32,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:54:32,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-26 00:54:32,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:32,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-26 00:54:32,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2022-11-26 00:54:32,005 INFO L87 Difference]: Start difference. First operand 715 states and 858 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 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) [2022-11-26 00:54:32,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:32,919 INFO L93 Difference]: Finished difference Result 1210 states and 1462 transitions. [2022-11-26 00:54:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-26 00:54:32,920 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 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 46 [2022-11-26 00:54:32,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:32,923 INFO L225 Difference]: With dead ends: 1210 [2022-11-26 00:54:32,923 INFO L226 Difference]: Without dead ends: 506 [2022-11-26 00:54:32,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 122 SyntacticMatches, 8 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 981 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=524, Invalid=3136, Unknown=0, NotChecked=0, Total=3660 [2022-11-26 00:54:32,928 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 152 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:32,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 90 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:54:32,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-11-26 00:54:33,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 495. [2022-11-26 00:54:33,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 493 states have (on average 1.0953346855983772) internal successors, (540), 494 states have internal predecessors, (540), 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) [2022-11-26 00:54:33,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 540 transitions. [2022-11-26 00:54:33,037 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 540 transitions. Word has length 46 [2022-11-26 00:54:33,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:33,038 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 540 transitions. [2022-11-26 00:54:33,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 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) [2022-11-26 00:54:33,038 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 540 transitions. [2022-11-26 00:54:33,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-26 00:54:33,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:33,039 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2022-11-26 00:54:33,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-26 00:54:33,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-26 00:54:33,246 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:33,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:33,246 INFO L85 PathProgramCache]: Analyzing trace with hash -555767703, now seen corresponding path program 1 times [2022-11-26 00:54:33,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:33,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625481387] [2022-11-26 00:54:33,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:33,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:33,596 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:33,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:33,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625481387] [2022-11-26 00:54:33,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625481387] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:33,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631213261] [2022-11-26 00:54:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:33,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:33,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:33,598 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:33,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-26 00:54:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:33,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-26 00:54:33,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:34,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:54:34,558 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:34,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631213261] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:54:34,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2068259630] [2022-11-26 00:54:34,559 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:54:34,560 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:54:34,560 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:54:34,560 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:54:34,560 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:54:35,065 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:54:36,305 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17768#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-26 00:54:36,305 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:54:36,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:54:36,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2022-11-26 00:54:36,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188639317] [2022-11-26 00:54:36,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:54:36,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-26 00:54:36,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:36,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-26 00:54:36,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=3853, Unknown=0, NotChecked=0, Total=4556 [2022-11-26 00:54:36,308 INFO L87 Difference]: Start difference. First operand 495 states and 540 transitions. Second operand has 59 states, 58 states have (on average 2.5344827586206895) internal successors, (147), 58 states have internal predecessors, (147), 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) [2022-11-26 00:54:37,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:37,995 INFO L93 Difference]: Finished difference Result 589 states and 640 transitions. [2022-11-26 00:54:37,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-26 00:54:37,995 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.5344827586206895) internal successors, (147), 58 states have internal predecessors, (147), 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 49 [2022-11-26 00:54:37,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:37,998 INFO L225 Difference]: With dead ends: 589 [2022-11-26 00:54:37,998 INFO L226 Difference]: Without dead ends: 568 [2022-11-26 00:54:38,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 91 SyntacticMatches, 7 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5543 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2370, Invalid=10740, Unknown=0, NotChecked=0, Total=13110 [2022-11-26 00:54:38,002 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 361 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:38,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 83 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:54:38,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-11-26 00:54:38,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 496. [2022-11-26 00:54:38,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 494 states have (on average 1.082995951417004) internal successors, (535), 495 states have internal predecessors, (535), 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) [2022-11-26 00:54:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 535 transitions. [2022-11-26 00:54:38,110 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 535 transitions. Word has length 49 [2022-11-26 00:54:38,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:38,111 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 535 transitions. [2022-11-26 00:54:38,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.5344827586206895) internal successors, (147), 58 states have internal predecessors, (147), 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) [2022-11-26 00:54:38,111 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 535 transitions. [2022-11-26 00:54:38,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-26 00:54:38,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:38,112 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:54:38,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-26 00:54:38,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-26 00:54:38,315 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:38,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:38,315 INFO L85 PathProgramCache]: Analyzing trace with hash 287389543, now seen corresponding path program 1 times [2022-11-26 00:54:38,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:38,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350286741] [2022-11-26 00:54:38,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:38,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:54:38,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:38,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350286741] [2022-11-26 00:54:38,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350286741] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:38,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527038082] [2022-11-26 00:54:38,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:38,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:38,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:38,743 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:38,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-26 00:54:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:38,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-26 00:54:38,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:54:38,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:54:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:54:39,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527038082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:54:39,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2117807524] [2022-11-26 00:54:39,412 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-26 00:54:39,412 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:54:39,412 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:54:39,412 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:54:39,412 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:54:39,636 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:54:40,721 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19780#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (< 2147483646 |ULTIMATE.start_f_#t~post1#1|) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 |ULTIMATE.start_f_~i~0#1|) (<= |ULTIMATE.start_f_~k#1| 2) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~i~0#1| 2) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-26 00:54:40,722 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:54:40,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:54:40,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 44 [2022-11-26 00:54:40,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107158432] [2022-11-26 00:54:40,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:54:40,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-26 00:54:40,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:40,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-26 00:54:40,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=691, Invalid=2389, Unknown=0, NotChecked=0, Total=3080 [2022-11-26 00:54:40,724 INFO L87 Difference]: Start difference. First operand 496 states and 535 transitions. Second operand has 46 states, 45 states have (on average 2.2666666666666666) internal successors, (102), 45 states have internal predecessors, (102), 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) [2022-11-26 00:54:41,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:41,656 INFO L93 Difference]: Finished difference Result 1015 states and 1132 transitions. [2022-11-26 00:54:41,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-26 00:54:41,656 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.2666666666666666) internal successors, (102), 45 states have internal predecessors, (102), 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 51 [2022-11-26 00:54:41,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:41,660 INFO L225 Difference]: With dead ends: 1015 [2022-11-26 00:54:41,660 INFO L226 Difference]: Without dead ends: 1014 [2022-11-26 00:54:41,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1698 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1473, Invalid=4533, Unknown=0, NotChecked=0, Total=6006 [2022-11-26 00:54:41,662 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 489 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:41,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 279 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:54:41,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2022-11-26 00:54:41,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 792. [2022-11-26 00:54:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 790 states have (on average 1.1151898734177215) internal successors, (881), 791 states have internal predecessors, (881), 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) [2022-11-26 00:54:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 881 transitions. [2022-11-26 00:54:41,813 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 881 transitions. Word has length 51 [2022-11-26 00:54:41,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:41,814 INFO L495 AbstractCegarLoop]: Abstraction has 792 states and 881 transitions. [2022-11-26 00:54:41,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.2666666666666666) internal successors, (102), 45 states have internal predecessors, (102), 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) [2022-11-26 00:54:41,814 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 881 transitions. [2022-11-26 00:54:41,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-26 00:54:41,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:41,816 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-26 00:54:41,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-26 00:54:42,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-26 00:54:42,022 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:42,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:42,022 INFO L85 PathProgramCache]: Analyzing trace with hash 801247959, now seen corresponding path program 2 times [2022-11-26 00:54:42,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:42,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976437483] [2022-11-26 00:54:42,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:42,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:42,673 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:42,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:42,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976437483] [2022-11-26 00:54:42,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976437483] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:42,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893220601] [2022-11-26 00:54:42,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:54:42,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:42,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:42,675 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:42,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-26 00:54:42,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-26 00:54:42,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:54:42,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-26 00:54:42,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:43,451 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:43,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:54:44,223 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:44,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893220601] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:54:44,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [651477063] [2022-11-26 00:54:44,225 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:54:44,225 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:54:44,225 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:54:44,225 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:54:44,226 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:54:44,693 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:54:46,480 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22878#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-26 00:54:46,480 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:54:46,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:54:46,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 81 [2022-11-26 00:54:46,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130237813] [2022-11-26 00:54:46,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:54:46,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-11-26 00:54:46,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:46,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-11-26 00:54:46,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1303, Invalid=7069, Unknown=0, NotChecked=0, Total=8372 [2022-11-26 00:54:46,484 INFO L87 Difference]: Start difference. First operand 792 states and 881 transitions. Second operand has 83 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 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) [2022-11-26 00:54:48,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:48,862 INFO L93 Difference]: Finished difference Result 1019 states and 1135 transitions. [2022-11-26 00:54:48,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-11-26 00:54:48,863 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 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 63 [2022-11-26 00:54:48,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:48,867 INFO L225 Difference]: With dead ends: 1019 [2022-11-26 00:54:48,867 INFO L226 Difference]: Without dead ends: 996 [2022-11-26 00:54:48,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 109 SyntacticMatches, 15 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10678 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=4533, Invalid=18117, Unknown=0, NotChecked=0, Total=22650 [2022-11-26 00:54:48,870 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 556 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:48,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 122 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:54:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2022-11-26 00:54:49,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 848. [2022-11-26 00:54:49,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 846 states have (on average 1.1028368794326242) internal successors, (933), 847 states have internal predecessors, (933), 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) [2022-11-26 00:54:49,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 933 transitions. [2022-11-26 00:54:49,051 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 933 transitions. Word has length 63 [2022-11-26 00:54:49,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:49,051 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 933 transitions. [2022-11-26 00:54:49,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 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) [2022-11-26 00:54:49,051 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 933 transitions. [2022-11-26 00:54:49,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-26 00:54:49,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:49,053 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:54:49,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-26 00:54:49,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:49,259 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:49,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:49,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1886645309, now seen corresponding path program 5 times [2022-11-26 00:54:49,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:49,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069128286] [2022-11-26 00:54:49,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:49,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:50,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:50,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069128286] [2022-11-26 00:54:50,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069128286] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:50,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683934539] [2022-11-26 00:54:50,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:54:50,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:50,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:50,365 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:50,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-26 00:54:50,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2022-11-26 00:54:50,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:54:50,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-26 00:54:50,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:54:51,687 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:51,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:54:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:53,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683934539] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:54:53,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1614001038] [2022-11-26 00:54:53,323 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:54:53,323 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:54:53,324 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:54:53,324 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:54:53,324 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:54:53,450 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:54:54,766 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26274#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|))' at error location [2022-11-26 00:54:54,766 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:54:54,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:54:54,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 117 [2022-11-26 00:54:54,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912338122] [2022-11-26 00:54:54,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:54:54,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-11-26 00:54:54,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:54:54,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-11-26 00:54:54,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3401, Invalid=13369, Unknown=0, NotChecked=0, Total=16770 [2022-11-26 00:54:54,772 INFO L87 Difference]: Start difference. First operand 848 states and 933 transitions. Second operand has 119 states, 118 states have (on average 2.110169491525424) internal successors, (249), 118 states have internal predecessors, (249), 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) [2022-11-26 00:54:58,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:54:58,401 INFO L93 Difference]: Finished difference Result 1278 states and 1413 transitions. [2022-11-26 00:54:58,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-11-26 00:54:58,401 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 118 states have (on average 2.110169491525424) internal successors, (249), 118 states have internal predecessors, (249), 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 83 [2022-11-26 00:54:58,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:54:58,404 INFO L225 Difference]: With dead ends: 1278 [2022-11-26 00:54:58,404 INFO L226 Difference]: Without dead ends: 1235 [2022-11-26 00:54:58,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17452 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=10130, Invalid=32512, Unknown=0, NotChecked=0, Total=42642 [2022-11-26 00:54:58,409 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1129 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:54:58,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1129 Valid, 166 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:54:58,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-11-26 00:54:58,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1106. [2022-11-26 00:54:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1104 states have (on average 1.1014492753623188) internal successors, (1216), 1105 states have internal predecessors, (1216), 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) [2022-11-26 00:54:58,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1216 transitions. [2022-11-26 00:54:58,640 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1216 transitions. Word has length 83 [2022-11-26 00:54:58,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:54:58,641 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1216 transitions. [2022-11-26 00:54:58,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 118 states have (on average 2.110169491525424) internal successors, (249), 118 states have internal predecessors, (249), 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) [2022-11-26 00:54:58,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1216 transitions. [2022-11-26 00:54:58,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-26 00:54:58,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:54:58,643 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 7, 7, 7, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2022-11-26 00:54:58,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-26 00:54:58,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-26 00:54:58,849 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:54:58,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:54:58,850 INFO L85 PathProgramCache]: Analyzing trace with hash -465360484, now seen corresponding path program 3 times [2022-11-26 00:54:58,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:54:58,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168971023] [2022-11-26 00:54:58,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:54:58,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:54:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:54:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:54:59,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:54:59,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168971023] [2022-11-26 00:54:59,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168971023] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:54:59,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075172275] [2022-11-26 00:54:59,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:54:59,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:54:59,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:54:59,853 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:54:59,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-26 00:54:59,926 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:54:59,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:54:59,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-26 00:54:59,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:55:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:01,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:55:02,343 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:02,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075172275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:55:02,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [483573374] [2022-11-26 00:55:02,345 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:55:02,345 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:55:02,345 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:55:02,346 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:55:02,346 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:55:02,803 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:55:05,197 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '30445#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-26 00:55:05,197 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:55:05,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:55:05,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 111 [2022-11-26 00:55:05,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340600377] [2022-11-26 00:55:05,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:55:05,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-11-26 00:55:05,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:55:05,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-11-26 00:55:05,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2337, Invalid=12425, Unknown=0, NotChecked=0, Total=14762 [2022-11-26 00:55:05,202 INFO L87 Difference]: Start difference. First operand 1106 states and 1216 transitions. Second operand has 113 states, 112 states have (on average 2.2767857142857144) internal successors, (255), 112 states have internal predecessors, (255), 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) [2022-11-26 00:55:09,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:55:09,072 INFO L93 Difference]: Finished difference Result 1577 states and 1725 transitions. [2022-11-26 00:55:09,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-11-26 00:55:09,073 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 2.2767857142857144) internal successors, (255), 112 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-11-26 00:55:09,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:55:09,076 INFO L225 Difference]: With dead ends: 1577 [2022-11-26 00:55:09,076 INFO L226 Difference]: Without dead ends: 1546 [2022-11-26 00:55:09,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 150 SyntacticMatches, 20 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19968 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=8458, Invalid=33362, Unknown=0, NotChecked=0, Total=41820 [2022-11-26 00:55:09,079 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 708 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:55:09,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 148 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:55:09,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2022-11-26 00:55:09,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1180. [2022-11-26 00:55:09,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1178 states have (on average 1.0942275042444822) internal successors, (1289), 1179 states have internal predecessors, (1289), 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) [2022-11-26 00:55:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1289 transitions. [2022-11-26 00:55:09,307 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1289 transitions. Word has length 85 [2022-11-26 00:55:09,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:55:09,308 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1289 transitions. [2022-11-26 00:55:09,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 2.2767857142857144) internal successors, (255), 112 states have internal predecessors, (255), 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) [2022-11-26 00:55:09,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1289 transitions. [2022-11-26 00:55:09,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-26 00:55:09,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:55:09,310 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1] [2022-11-26 00:55:09,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-26 00:55:09,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-26 00:55:09,516 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:55:09,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:55:09,516 INFO L85 PathProgramCache]: Analyzing trace with hash -613439449, now seen corresponding path program 3 times [2022-11-26 00:55:09,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:55:09,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259267111] [2022-11-26 00:55:09,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:09,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:55:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:10,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:55:10,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259267111] [2022-11-26 00:55:10,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259267111] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:55:10,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312377856] [2022-11-26 00:55:10,632 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:55:10,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:55:10,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:55:10,633 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:55:10,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-26 00:55:10,721 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:55:10,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:55:10,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-26 00:55:10,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:55:12,129 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:12,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:55:13,744 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:13,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312377856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:55:13,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1781298468] [2022-11-26 00:55:13,746 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:55:13,746 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:55:13,747 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:55:13,747 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:55:13,747 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:55:14,052 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:55:16,072 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '35258#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_f_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 |ULTIMATE.start_f_~k#1|) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-26 00:55:16,073 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:55:16,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:55:16,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 123 [2022-11-26 00:55:16,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077628916] [2022-11-26 00:55:16,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:55:16,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-11-26 00:55:16,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:55:16,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-11-26 00:55:16,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2931, Invalid=15159, Unknown=0, NotChecked=0, Total=18090 [2022-11-26 00:55:16,077 INFO L87 Difference]: Start difference. First operand 1180 states and 1289 transitions. Second operand has 125 states, 124 states have (on average 2.370967741935484) internal successors, (294), 124 states have internal predecessors, (294), 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) [2022-11-26 00:55:20,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:55:20,869 INFO L93 Difference]: Finished difference Result 1464 states and 1583 transitions. [2022-11-26 00:55:20,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-11-26 00:55:20,869 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 124 states have (on average 2.370967741935484) internal successors, (294), 124 states have internal predecessors, (294), 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 98 [2022-11-26 00:55:20,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:55:20,872 INFO L225 Difference]: With dead ends: 1464 [2022-11-26 00:55:20,872 INFO L226 Difference]: Without dead ends: 1425 [2022-11-26 00:55:20,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 185 SyntacticMatches, 15 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24285 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=9889, Invalid=43703, Unknown=0, NotChecked=0, Total=53592 [2022-11-26 00:55:20,875 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 817 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:55:20,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 170 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:55:20,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2022-11-26 00:55:21,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1180. [2022-11-26 00:55:21,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1178 states have (on average 1.0831918505942275) internal successors, (1276), 1179 states have internal predecessors, (1276), 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) [2022-11-26 00:55:21,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1276 transitions. [2022-11-26 00:55:21,166 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1276 transitions. Word has length 98 [2022-11-26 00:55:21,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:55:21,166 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1276 transitions. [2022-11-26 00:55:21,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 124 states have (on average 2.370967741935484) internal successors, (294), 124 states have internal predecessors, (294), 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) [2022-11-26 00:55:21,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1276 transitions. [2022-11-26 00:55:21,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-26 00:55:21,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:55:21,168 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:55:21,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-26 00:55:21,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-26 00:55:21,374 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:55:21,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:55:21,375 INFO L85 PathProgramCache]: Analyzing trace with hash -67056725, now seen corresponding path program 2 times [2022-11-26 00:55:21,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:55:21,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275353852] [2022-11-26 00:55:21,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:21,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:55:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:55:22,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:55:22,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275353852] [2022-11-26 00:55:22,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275353852] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:55:22,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625256291] [2022-11-26 00:55:22,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:55:22,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:55:22,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:55:22,636 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:55:22,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-26 00:55:22,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-26 00:55:22,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:55:22,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-26 00:55:22,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:55:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 947 trivial. 0 not checked. [2022-11-26 00:55:22,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:55:22,969 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 947 trivial. 0 not checked. [2022-11-26 00:55:22,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625256291] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:55:22,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1010756147] [2022-11-26 00:55:22,970 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-26 00:55:22,971 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:55:22,971 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:55:22,971 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:55:22,971 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:55:23,150 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:55:24,387 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '39862#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (< 2147483646 |ULTIMATE.start_f_#t~post1#1|) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 |ULTIMATE.start_f_~i~0#1|) (<= |ULTIMATE.start_f_~k#1| 2) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~i~0#1| 2) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-26 00:55:24,387 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:55:24,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:55:24,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 2, 2] total 48 [2022-11-26 00:55:24,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955135876] [2022-11-26 00:55:24,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:55:24,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-26 00:55:24,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:55:24,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-26 00:55:24,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=2760, Unknown=0, NotChecked=0, Total=3540 [2022-11-26 00:55:24,390 INFO L87 Difference]: Start difference. First operand 1180 states and 1276 transitions. Second operand has 50 states, 49 states have (on average 2.326530612244898) internal successors, (114), 49 states have internal predecessors, (114), 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) [2022-11-26 00:55:26,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:55:26,195 INFO L93 Difference]: Finished difference Result 1423 states and 1526 transitions. [2022-11-26 00:55:26,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-26 00:55:26,196 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.326530612244898) internal successors, (114), 49 states have internal predecessors, (114), 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 99 [2022-11-26 00:55:26,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:55:26,199 INFO L225 Difference]: With dead ends: 1423 [2022-11-26 00:55:26,200 INFO L226 Difference]: Without dead ends: 1422 [2022-11-26 00:55:26,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2846 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2694, Invalid=8648, Unknown=0, NotChecked=0, Total=11342 [2022-11-26 00:55:26,201 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 840 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:55:26,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 270 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:55:26,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2022-11-26 00:55:26,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 628. [2022-11-26 00:55:26,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 1.0494417862838916) internal successors, (658), 627 states have internal predecessors, (658), 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) [2022-11-26 00:55:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 658 transitions. [2022-11-26 00:55:26,349 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 658 transitions. Word has length 99 [2022-11-26 00:55:26,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:55:26,350 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 658 transitions. [2022-11-26 00:55:26,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.326530612244898) internal successors, (114), 49 states have internal predecessors, (114), 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) [2022-11-26 00:55:26,350 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 658 transitions. [2022-11-26 00:55:26,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-26 00:55:26,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:55:26,351 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 11, 9, 9, 9, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2022-11-26 00:55:26,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-26 00:55:26,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-26 00:55:26,557 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:55:26,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:55:26,557 INFO L85 PathProgramCache]: Analyzing trace with hash 750645948, now seen corresponding path program 4 times [2022-11-26 00:55:26,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:55:26,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654986796] [2022-11-26 00:55:26,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:26,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:55:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 0 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:28,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:55:28,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654986796] [2022-11-26 00:55:28,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654986796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:55:28,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578247752] [2022-11-26 00:55:28,090 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 00:55:28,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:55:28,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:55:28,091 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:55:28,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-26 00:55:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:28,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-26 00:55:28,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:55:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 0 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:29,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:55:32,089 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 0 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:32,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578247752] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:55:32,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [266684110] [2022-11-26 00:55:32,091 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:55:32,091 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:55:32,091 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:55:32,091 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:55:32,092 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:55:32,462 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:55:35,678 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '43717#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-26 00:55:35,678 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:55:35,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:55:35,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 147 [2022-11-26 00:55:35,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208156615] [2022-11-26 00:55:35,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:55:35,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2022-11-26 00:55:35,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:55:35,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2022-11-26 00:55:35,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3997, Invalid=20809, Unknown=0, NotChecked=0, Total=24806 [2022-11-26 00:55:35,682 INFO L87 Difference]: Start difference. First operand 628 states and 658 transitions. Second operand has 149 states, 148 states have (on average 2.25) internal successors, (333), 148 states have internal predecessors, (333), 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) [2022-11-26 00:55:41,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:55:41,833 INFO L93 Difference]: Finished difference Result 1482 states and 1544 transitions. [2022-11-26 00:55:41,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-11-26 00:55:41,834 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 148 states have (on average 2.25) internal successors, (333), 148 states have internal predecessors, (333), 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 111 [2022-11-26 00:55:41,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:55:41,836 INFO L225 Difference]: With dead ends: 1482 [2022-11-26 00:55:41,836 INFO L226 Difference]: Without dead ends: 1445 [2022-11-26 00:55:41,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 198 SyntacticMatches, 26 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34757 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=14784, Invalid=57308, Unknown=0, NotChecked=0, Total=72092 [2022-11-26 00:55:41,841 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1242 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:55:41,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 171 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 00:55:41,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2022-11-26 00:55:42,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 628. [2022-11-26 00:55:42,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 1.0494417862838916) internal successors, (658), 627 states have internal predecessors, (658), 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) [2022-11-26 00:55:42,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 658 transitions. [2022-11-26 00:55:42,117 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 658 transitions. Word has length 111 [2022-11-26 00:55:42,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:55:42,117 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 658 transitions. [2022-11-26 00:55:42,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 148 states have (on average 2.25) internal successors, (333), 148 states have internal predecessors, (333), 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) [2022-11-26 00:55:42,118 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 658 transitions. [2022-11-26 00:55:42,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-26 00:55:42,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:55:42,119 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 15, 11, 11, 11, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1] [2022-11-26 00:55:42,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-26 00:55:42,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:55:42,319 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:55:42,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:55:42,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1279741495, now seen corresponding path program 5 times [2022-11-26 00:55:42,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:55:42,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155231861] [2022-11-26 00:55:42,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:55:42,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:55:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:55:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:44,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:55:44,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155231861] [2022-11-26 00:55:44,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155231861] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:55:44,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156896464] [2022-11-26 00:55:44,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:55:44,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:55:44,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:55:44,963 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:55:44,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-26 00:55:45,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2022-11-26 00:55:45,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:55:45,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-26 00:55:45,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:55:47,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:47,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:55:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:55:51,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156896464] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:55:51,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [453154453] [2022-11-26 00:55:51,101 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:55:51,101 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:55:51,101 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:55:51,101 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:55:51,101 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:55:51,485 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:55:55,985 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '48023#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-26 00:55:55,985 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:55:55,985 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:55:55,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 189 [2022-11-26 00:55:55,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009321073] [2022-11-26 00:55:55,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:55:55,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2022-11-26 00:55:55,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:55:55,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2022-11-26 00:55:55,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6523, Invalid=33277, Unknown=0, NotChecked=0, Total=39800 [2022-11-26 00:55:55,989 INFO L87 Difference]: Start difference. First operand 628 states and 658 transitions. Second operand has 191 states, 190 states have (on average 2.2263157894736842) internal successors, (423), 190 states have internal predecessors, (423), 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) [2022-11-26 00:56:05,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:56:05,747 INFO L93 Difference]: Finished difference Result 1764 states and 1836 transitions. [2022-11-26 00:56:05,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2022-11-26 00:56:05,748 INFO L78 Accepts]: Start accepts. Automaton has has 191 states, 190 states have (on average 2.2263157894736842) internal successors, (423), 190 states have internal predecessors, (423), 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 141 [2022-11-26 00:56:05,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:56:05,754 INFO L225 Difference]: With dead ends: 1764 [2022-11-26 00:56:05,754 INFO L226 Difference]: Without dead ends: 1717 [2022-11-26 00:56:05,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 253 SyntacticMatches, 33 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56990 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=24399, Invalid=92907, Unknown=0, NotChecked=0, Total=117306 [2022-11-26 00:56:05,760 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1486 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:56:05,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 222 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:56:05,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2022-11-26 00:56:06,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 676. [2022-11-26 00:56:06,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 1.045925925925926) internal successors, (706), 675 states have internal predecessors, (706), 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) [2022-11-26 00:56:06,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 706 transitions. [2022-11-26 00:56:06,164 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 706 transitions. Word has length 141 [2022-11-26 00:56:06,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:56:06,164 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 706 transitions. [2022-11-26 00:56:06,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 191 states, 190 states have (on average 2.2263157894736842) internal successors, (423), 190 states have internal predecessors, (423), 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) [2022-11-26 00:56:06,164 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 706 transitions. [2022-11-26 00:56:06,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-26 00:56:06,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:56:06,166 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 13, 13, 13, 12, 12, 12, 11, 11, 2, 1, 1, 1, 1, 1] [2022-11-26 00:56:06,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-26 00:56:06,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:56:06,372 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:56:06,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:56:06,372 INFO L85 PathProgramCache]: Analyzing trace with hash 959199986, now seen corresponding path program 6 times [2022-11-26 00:56:06,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:56:06,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305017669] [2022-11-26 00:56:06,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:56:06,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:56:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:56:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 0 proven. 1492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:56:09,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:56:09,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305017669] [2022-11-26 00:56:09,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305017669] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:56:09,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463586033] [2022-11-26 00:56:09,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:56:09,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:56:09,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:56:09,807 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:56:09,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-26 00:56:10,094 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:56:10,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:56:10,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-26 00:56:10,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:56:13,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 0 proven. 1492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:56:13,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:56:17,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 0 proven. 1492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:56:17,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463586033] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:56:17,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [687294785] [2022-11-26 00:56:17,990 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:56:17,991 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:56:17,991 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:56:17,991 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:56:17,991 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:56:18,357 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:56:23,629 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '53090#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-26 00:56:23,629 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:56:23,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:56:23,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 219 [2022-11-26 00:56:23,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320652683] [2022-11-26 00:56:23,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:56:23,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 221 states [2022-11-26 00:56:23,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:56:23,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2022-11-26 00:56:23,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8661, Invalid=44009, Unknown=0, NotChecked=0, Total=52670 [2022-11-26 00:56:23,635 INFO L87 Difference]: Start difference. First operand 676 states and 706 transitions. Second operand has 221 states, 220 states have (on average 2.359090909090909) internal successors, (519), 220 states have internal predecessors, (519), 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) [2022-11-26 00:56:37,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:56:37,945 INFO L93 Difference]: Finished difference Result 1566 states and 1663 transitions. [2022-11-26 00:56:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2022-11-26 00:56:37,946 INFO L78 Accepts]: Start accepts. Automaton has has 221 states, 220 states have (on average 2.359090909090909) internal successors, (519), 220 states have internal predecessors, (519), 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 173 [2022-11-26 00:56:37,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:56:37,948 INFO L225 Difference]: With dead ends: 1566 [2022-11-26 00:56:37,949 INFO L226 Difference]: Without dead ends: 1495 [2022-11-26 00:56:37,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 324 SyntacticMatches, 38 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83689 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=33027, Invalid=140445, Unknown=0, NotChecked=0, Total=173472 [2022-11-26 00:56:37,956 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1745 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:56:37,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1745 Valid, 262 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-26 00:56:37,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2022-11-26 00:56:38,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 821. [2022-11-26 00:56:38,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 820 states have (on average 1.0621951219512196) internal successors, (871), 820 states have internal predecessors, (871), 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) [2022-11-26 00:56:38,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 871 transitions. [2022-11-26 00:56:38,343 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 871 transitions. Word has length 173 [2022-11-26 00:56:38,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:56:38,344 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 871 transitions. [2022-11-26 00:56:38,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 221 states, 220 states have (on average 2.359090909090909) internal successors, (519), 220 states have internal predecessors, (519), 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) [2022-11-26 00:56:38,344 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 871 transitions. [2022-11-26 00:56:38,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-26 00:56:38,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:56:38,345 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:56:38,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-26 00:56:38,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:56:38,546 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:56:38,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:56:38,546 INFO L85 PathProgramCache]: Analyzing trace with hash -534520635, now seen corresponding path program 6 times [2022-11-26 00:56:38,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:56:38,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143347573] [2022-11-26 00:56:38,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:56:38,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:56:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:56:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 0 proven. 3487 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:56:42,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:56:42,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143347573] [2022-11-26 00:56:42,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143347573] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:56:42,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918044632] [2022-11-26 00:56:42,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:56:42,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:56:42,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:56:42,920 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:56:42,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-26 00:56:43,005 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:56:43,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:56:43,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-26 00:56:43,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:56:47,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 0 proven. 3487 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:56:47,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:56:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 0 proven. 3487 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:56:54,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918044632] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:56:54,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [894208384] [2022-11-26 00:56:54,496 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:56:54,496 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:56:54,496 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:56:54,496 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:56:54,497 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:56:54,635 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:56:56,508 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '58224#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|))' at error location [2022-11-26 00:56:56,508 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:56:56,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:56:56,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 261 [2022-11-26 00:56:56,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910258579] [2022-11-26 00:56:56,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:56:56,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 263 states [2022-11-26 00:56:56,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:56:56,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 263 interpolants. [2022-11-26 00:56:56,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15881, Invalid=58921, Unknown=0, NotChecked=0, Total=74802 [2022-11-26 00:56:56,519 INFO L87 Difference]: Start difference. First operand 821 states and 871 transitions. Second operand has 263 states, 262 states have (on average 2.049618320610687) internal successors, (537), 262 states have internal predecessors, (537), 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) [2022-11-26 00:57:12,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:57:12,681 INFO L93 Difference]: Finished difference Result 2114 states and 2250 transitions. [2022-11-26 00:57:12,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2022-11-26 00:57:12,682 INFO L78 Accepts]: Start accepts. Automaton has has 263 states, 262 states have (on average 2.049618320610687) internal successors, (537), 262 states have internal predecessors, (537), 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 179 [2022-11-26 00:57:12,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:57:12,691 INFO L225 Difference]: With dead ends: 2114 [2022-11-26 00:57:12,691 INFO L226 Difference]: Without dead ends: 2023 [2022-11-26 00:57:12,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 348 SyntacticMatches, 2 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80792 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=49166, Invalid=150196, Unknown=0, NotChecked=0, Total=199362 [2022-11-26 00:57:12,699 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2976 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2976 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:57:12,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2976 Valid, 311 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-26 00:57:12,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2022-11-26 00:57:13,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 1301. [2022-11-26 00:57:13,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1300 states have (on average 1.0392307692307692) internal successors, (1351), 1300 states have internal predecessors, (1351), 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) [2022-11-26 00:57:13,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1351 transitions. [2022-11-26 00:57:13,510 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1351 transitions. Word has length 179 [2022-11-26 00:57:13,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:57:13,510 INFO L495 AbstractCegarLoop]: Abstraction has 1301 states and 1351 transitions. [2022-11-26 00:57:13,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 263 states, 262 states have (on average 2.049618320610687) internal successors, (537), 262 states have internal predecessors, (537), 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) [2022-11-26 00:57:13,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1351 transitions. [2022-11-26 00:57:13,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-26 00:57:13,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:57:13,513 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 22, 13, 13, 13, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1] [2022-11-26 00:57:13,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-26 00:57:13,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-26 00:57:13,713 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:57:13,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:57:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2059285315, now seen corresponding path program 7 times [2022-11-26 00:57:13,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:57:13,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375525000] [2022-11-26 00:57:13,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:57:13,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:57:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 0 proven. 1907 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:17,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:57:17,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375525000] [2022-11-26 00:57:17,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375525000] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:57:17,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898700297] [2022-11-26 00:57:17,331 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 00:57:17,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:57:17,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:57:17,332 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:57:17,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-26 00:57:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:17,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-26 00:57:17,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:57:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 0 proven. 1907 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:21,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:57:27,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 0 proven. 1907 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:27,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898700297] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:57:27,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2074946495] [2022-11-26 00:57:27,271 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:57:27,271 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:57:27,271 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:57:27,271 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:57:27,271 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:57:27,674 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:57:34,426 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '64895#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-26 00:57:34,427 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:57:34,427 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:57:34,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 249 [2022-11-26 00:57:34,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392463695] [2022-11-26 00:57:34,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:57:34,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 251 states [2022-11-26 00:57:34,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:57:34,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 251 interpolants. [2022-11-26 00:57:34,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11311, Invalid=56029, Unknown=0, NotChecked=0, Total=67340 [2022-11-26 00:57:34,434 INFO L87 Difference]: Start difference. First operand 1301 states and 1351 transitions. Second operand has 251 states, 250 states have (on average 2.196) internal successors, (549), 250 states have internal predecessors, (549), 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) [2022-11-26 00:57:51,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:57:51,993 INFO L93 Difference]: Finished difference Result 3276 states and 3384 transitions. [2022-11-26 00:57:51,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2022-11-26 00:57:51,994 INFO L78 Accepts]: Start accepts. Automaton has has 251 states, 250 states have (on average 2.196) internal successors, (549), 250 states have internal predecessors, (549), 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 183 [2022-11-26 00:57:51,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:57:52,000 INFO L225 Difference]: With dead ends: 3276 [2022-11-26 00:57:52,000 INFO L226 Difference]: Without dead ends: 3213 [2022-11-26 00:57:52,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 817 GetRequests, 329 SyntacticMatches, 43 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97621 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=42347, Invalid=157015, Unknown=0, NotChecked=0, Total=199362 [2022-11-26 00:57:52,008 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2039 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2039 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:57:52,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2039 Valid, 293 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-26 00:57:52,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2022-11-26 00:57:53,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 1301. [2022-11-26 00:57:53,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1300 states have (on average 1.0392307692307692) internal successors, (1351), 1300 states have internal predecessors, (1351), 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) [2022-11-26 00:57:53,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1351 transitions. [2022-11-26 00:57:53,146 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1351 transitions. Word has length 183 [2022-11-26 00:57:53,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:57:53,146 INFO L495 AbstractCegarLoop]: Abstraction has 1301 states and 1351 transitions. [2022-11-26 00:57:53,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 251 states, 250 states have (on average 2.196) internal successors, (549), 250 states have internal predecessors, (549), 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) [2022-11-26 00:57:53,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1351 transitions. [2022-11-26 00:57:53,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-26 00:57:53,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:57:53,148 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 28, 15, 15, 15, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1] [2022-11-26 00:57:53,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-26 00:57:53,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-26 00:57:53,349 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:57:53,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:57:53,349 INFO L85 PathProgramCache]: Analyzing trace with hash -935096204, now seen corresponding path program 8 times [2022-11-26 00:57:53,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:57:53,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383531830] [2022-11-26 00:57:53,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:57:53,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:57:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:57:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2906 backedges. 0 proven. 2906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:57:58,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:57:58,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383531830] [2022-11-26 00:57:58,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383531830] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:57:58,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717862996] [2022-11-26 00:57:58,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:57:58,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:57:58,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:57:58,176 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:57:58,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-26 00:57:58,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2022-11-26 00:57:58,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:57:58,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 103 conjunts are in the unsatisfiable core [2022-11-26 00:57:58,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:58:04,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2906 backedges. 0 proven. 2906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:58:04,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:58:12,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2906 backedges. 0 proven. 2906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:58:12,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717862996] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:58:12,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1411381032] [2022-11-26 00:58:12,695 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:58:12,695 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:58:12,695 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:58:12,696 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:58:12,696 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:58:13,070 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:58:22,210 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '73528#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-26 00:58:22,210 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:58:22,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:58:22,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 303 [2022-11-26 00:58:22,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839437148] [2022-11-26 00:58:22,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:58:22,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 305 states [2022-11-26 00:58:22,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:58:22,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 305 interpolants. [2022-11-26 00:58:22,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16737, Invalid=81545, Unknown=0, NotChecked=0, Total=98282 [2022-11-26 00:58:22,222 INFO L87 Difference]: Start difference. First operand 1301 states and 1351 transitions. Second operand has 305 states, 304 states have (on average 2.1809210526315788) internal successors, (663), 304 states have internal predecessors, (663), 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) [2022-11-26 00:58:48,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:58:48,400 INFO L93 Difference]: Finished difference Result 3416 states and 3538 transitions. [2022-11-26 00:58:48,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 330 states. [2022-11-26 00:58:48,400 INFO L78 Accepts]: Start accepts. Automaton has has 305 states, 304 states have (on average 2.1809210526315788) internal successors, (663), 304 states have internal predecessors, (663), 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 221 [2022-11-26 00:58:48,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:58:48,407 INFO L225 Difference]: With dead ends: 3416 [2022-11-26 00:58:48,407 INFO L226 Difference]: Without dead ends: 3339 [2022-11-26 00:58:48,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 398 SyntacticMatches, 52 SemanticMatches, 539 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143570 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=62714, Invalid=229426, Unknown=0, NotChecked=0, Total=292140 [2022-11-26 00:58:48,419 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2848 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2848 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:58:48,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2848 Valid, 347 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-26 00:58:48,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2022-11-26 00:58:49,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 1301. [2022-11-26 00:58:49,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1300 states have (on average 1.0392307692307692) internal successors, (1351), 1300 states have internal predecessors, (1351), 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) [2022-11-26 00:58:49,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1351 transitions. [2022-11-26 00:58:49,819 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1351 transitions. Word has length 221 [2022-11-26 00:58:49,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:58:49,820 INFO L495 AbstractCegarLoop]: Abstraction has 1301 states and 1351 transitions. [2022-11-26 00:58:49,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 305 states, 304 states have (on average 2.1809210526315788) internal successors, (663), 304 states have internal predecessors, (663), 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) [2022-11-26 00:58:49,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1351 transitions. [2022-11-26 00:58:49,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-26 00:58:49,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:58:49,822 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 25, 25, 25, 16, 16, 16, 15, 15, 10, 1, 1, 1, 1, 1] [2022-11-26 00:58:49,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-26 00:58:50,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-26 00:58:50,023 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 00:58:50,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:58:50,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1661649798, now seen corresponding path program 9 times [2022-11-26 00:58:50,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:58:50,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557970234] [2022-11-26 00:58:50,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:58:50,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:58:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:58:56,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 3356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:58:56,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:58:56,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557970234] [2022-11-26 00:58:56,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557970234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:58:56,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483872332] [2022-11-26 00:58:56,079 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:58:56,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:58:56,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:58:56,080 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:58:56,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-26 00:58:56,210 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:58:56,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:58:56,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 115 conjunts are in the unsatisfiable core [2022-11-26 00:58:56,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:59:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 3356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:59:03,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:59:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 3356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:59:14,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483872332] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:59:14,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1011793308] [2022-11-26 00:59:14,013 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 00:59:14,013 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:59:14,013 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:59:14,014 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:59:14,014 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:59:14,401 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:59:24,867 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '82687#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-26 00:59:24,867 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:59:24,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:59:24,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113, 113] total 339 [2022-11-26 00:59:24,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815085071] [2022-11-26 00:59:24,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:59:24,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 341 states [2022-11-26 00:59:24,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:59:24,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 341 interpolants. [2022-11-26 00:59:24,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19933, Invalid=102217, Unknown=0, NotChecked=0, Total=122150 [2022-11-26 00:59:24,880 INFO L87 Difference]: Start difference. First operand 1301 states and 1351 transitions. Second operand has 341 states, 340 states have (on average 2.302941176470588) internal successors, (783), 340 states have internal predecessors, (783), 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) [2022-11-26 01:00:01,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:00:01,503 INFO L93 Difference]: Finished difference Result 3366 states and 3500 transitions. [2022-11-26 01:00:01,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 398 states. [2022-11-26 01:00:01,504 INFO L78 Accepts]: Start accepts. Automaton has has 341 states, 340 states have (on average 2.302941176470588) internal successors, (783), 340 states have internal predecessors, (783), 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 261 [2022-11-26 01:00:01,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:00:01,513 INFO L225 Difference]: With dead ends: 3366 [2022-11-26 01:00:01,513 INFO L226 Difference]: Without dead ends: 3277 [2022-11-26 01:00:01,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1177 GetRequests, 488 SyntacticMatches, 58 SemanticMatches, 631 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194326 ImplicationChecksByTransitivity, 50.3s TimeCoverageRelationStatistics Valid=78449, Invalid=321607, Unknown=0, NotChecked=0, Total=400056 [2022-11-26 01:00:01,532 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2871 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 2208 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2871 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 2244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-26 01:00:01,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2871 Valid, 396 Invalid, 2244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2208 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-26 01:00:01,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2022-11-26 01:00:03,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 1421. [2022-11-26 01:00:03,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1420 states have (on average 1.0471830985915493) internal successors, (1487), 1420 states have internal predecessors, (1487), 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) [2022-11-26 01:00:03,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1487 transitions. [2022-11-26 01:00:03,353 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1487 transitions. Word has length 261 [2022-11-26 01:00:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:00:03,354 INFO L495 AbstractCegarLoop]: Abstraction has 1421 states and 1487 transitions. [2022-11-26 01:00:03,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 341 states, 340 states have (on average 2.302941176470588) internal successors, (783), 340 states have internal predecessors, (783), 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) [2022-11-26 01:00:03,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1487 transitions. [2022-11-26 01:00:03,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-11-26 01:00:03,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:00:03,358 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 44, 17, 17, 17, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1] [2022-11-26 01:00:03,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-11-26 01:00:03,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-26 01:00:03,564 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:00:03,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:00:03,564 INFO L85 PathProgramCache]: Analyzing trace with hash -134555149, now seen corresponding path program 10 times [2022-11-26 01:00:03,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:00:03,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204555629] [2022-11-26 01:00:03,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:00:03,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:00:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5989 backedges. 0 proven. 5989 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:13,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:00:13,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204555629] [2022-11-26 01:00:13,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204555629] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:00:13,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020194373] [2022-11-26 01:00:13,120 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 01:00:13,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:00:13,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:00:13,121 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:00:13,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-26 01:00:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:00:13,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 141 conjunts are in the unsatisfiable core [2022-11-26 01:00:13,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:00:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5989 backedges. 0 proven. 5989 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:23,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:00:39,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5989 backedges. 0 proven. 5989 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:00:39,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020194373] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:00:39,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [348831855] [2022-11-26 01:00:39,668 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 01:00:39,668 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:00:39,669 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:00:39,669 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:00:39,669 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:00:40,030 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:00:55,762 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '92350#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-26 01:00:55,762 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:00:55,762 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:00:55,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139, 139] total 417 [2022-11-26 01:00:55,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136623364] [2022-11-26 01:00:55,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:00:55,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 419 states [2022-11-26 01:00:55,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:00:55,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 419 interpolants. [2022-11-26 01:00:55,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32295, Invalid=150461, Unknown=0, NotChecked=0, Total=182756 [2022-11-26 01:00:55,778 INFO L87 Difference]: Start difference. First operand 1421 states and 1487 transitions. Second operand has 419 states, 418 states have (on average 2.145933014354067) internal successors, (897), 418 states have internal predecessors, (897), 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) [2022-11-26 01:01:51,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:51,943 INFO L93 Difference]: Finished difference Result 4703 states and 4875 transitions. [2022-11-26 01:01:51,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 448 states. [2022-11-26 01:01:51,943 INFO L78 Accepts]: Start accepts. Automaton has has 419 states, 418 states have (on average 2.145933014354067) internal successors, (897), 418 states have internal predecessors, (897), 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 299 [2022-11-26 01:01:51,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:51,958 INFO L225 Difference]: With dead ends: 4703 [2022-11-26 01:01:51,958 INFO L226 Difference]: Without dead ends: 4592 [2022-11-26 01:01:51,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1341 GetRequests, 537 SyntacticMatches, 71 SemanticMatches, 733 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266775 ImplicationChecksByTransitivity, 71.0s TimeCoverageRelationStatistics Valid=119133, Invalid=420357, Unknown=0, NotChecked=0, Total=539490 [2022-11-26 01:01:51,982 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3939 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 2608 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3939 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 2631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:51,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3939 Valid, 474 Invalid, 2631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2608 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-26 01:01:51,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4592 states. [2022-11-26 01:01:54,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4592 to 1645. [2022-11-26 01:01:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 1.0407542579075426) internal successors, (1711), 1644 states have internal predecessors, (1711), 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) [2022-11-26 01:01:54,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 1711 transitions. [2022-11-26 01:01:54,543 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 1711 transitions. Word has length 299 [2022-11-26 01:01:54,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:54,543 INFO L495 AbstractCegarLoop]: Abstraction has 1645 states and 1711 transitions. [2022-11-26 01:01:54,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 419 states, 418 states have (on average 2.145933014354067) internal successors, (897), 418 states have internal predecessors, (897), 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) [2022-11-26 01:01:54,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 1711 transitions. [2022-11-26 01:01:54,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-11-26 01:01:54,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:54,548 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 52, 19, 19, 19, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1] [2022-11-26 01:01:54,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-26 01:01:54,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-26 01:01:54,754 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:54,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:54,754 INFO L85 PathProgramCache]: Analyzing trace with hash 368883290, now seen corresponding path program 11 times [2022-11-26 01:01:54,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:54,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778460302] [2022-11-26 01:01:54,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:54,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:02:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8174 backedges. 0 proven. 8174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:07,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:02:07,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778460302] [2022-11-26 01:02:07,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778460302] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:02:07,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049918211] [2022-11-26 01:02:07,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 01:02:07,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:02:07,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:02:07,558 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:02:07,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-26 01:02:07,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2022-11-26 01:02:07,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:02:07,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 163 conjunts are in the unsatisfiable core [2022-11-26 01:02:07,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:02:21,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8174 backedges. 0 proven. 8174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:21,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:02:42,649 INFO L134 CoverageAnalysis]: Checked inductivity of 8174 backedges. 0 proven. 8174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:42,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049918211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:02:42,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [912977166] [2022-11-26 01:02:42,651 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 01:02:42,651 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:02:42,651 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:02:42,651 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:02:42,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:02:43,034 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:03:03,584 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '104619#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-26 01:03:03,584 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:03:03,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:03:03,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161, 161] total 483 [2022-11-26 01:03:03,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688544939] [2022-11-26 01:03:03,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:03:03,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 485 states [2022-11-26 01:03:03,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:03:03,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 485 interpolants. [2022-11-26 01:03:03,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43405, Invalid=200137, Unknown=0, NotChecked=0, Total=243542 [2022-11-26 01:03:03,603 INFO L87 Difference]: Start difference. First operand 1645 states and 1711 transitions. Second operand has 485 states, 484 states have (on average 2.1384297520661155) internal successors, (1035), 484 states have internal predecessors, (1035), 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) [2022-11-26 01:04:20,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:04:20,791 INFO L93 Difference]: Finished difference Result 4617 states and 4807 transitions. [2022-11-26 01:04:20,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 518 states. [2022-11-26 01:04:20,791 INFO L78 Accepts]: Start accepts. Automaton has has 485 states, 484 states have (on average 2.1384297520661155) internal successors, (1035), 484 states have internal predecessors, (1035), 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 345 [2022-11-26 01:04:20,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:04:20,800 INFO L225 Difference]: With dead ends: 4617 [2022-11-26 01:04:20,800 INFO L226 Difference]: Without dead ends: 4488 [2022-11-26 01:04:20,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1549 GetRequests, 620 SyntacticMatches, 82 SemanticMatches, 847 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356523 ImplicationChecksByTransitivity, 92.8s TimeCoverageRelationStatistics Valid=159905, Invalid=560047, Unknown=0, NotChecked=0, Total=719952 [2022-11-26 01:04:20,829 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5350 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 3016 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5350 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 3038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-26 01:04:20,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5350 Valid, 549 Invalid, 3038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3016 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-26 01:04:20,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4488 states. [2022-11-26 01:04:23,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4488 to 1843. [2022-11-26 01:04:23,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1842 states have (on average 1.0363735070575462) internal successors, (1909), 1842 states have internal predecessors, (1909), 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) [2022-11-26 01:04:23,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 1909 transitions. [2022-11-26 01:04:23,803 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 1909 transitions. Word has length 345 [2022-11-26 01:04:23,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:04:23,803 INFO L495 AbstractCegarLoop]: Abstraction has 1843 states and 1909 transitions. [2022-11-26 01:04:23,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 485 states, 484 states have (on average 2.1384297520661155) internal successors, (1035), 484 states have internal predecessors, (1035), 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) [2022-11-26 01:04:23,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 1909 transitions. [2022-11-26 01:04:23,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-11-26 01:04:23,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:04:23,809 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 39, 39, 39, 22, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1] [2022-11-26 01:04:23,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-26 01:04:24,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-26 01:04:24,015 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:04:24,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:04:24,016 INFO L85 PathProgramCache]: Analyzing trace with hash 848766854, now seen corresponding path program 12 times [2022-11-26 01:04:24,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:04:24,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344909868] [2022-11-26 01:04:24,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:04:24,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:04:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:04:36,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6704 backedges. 0 proven. 6704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:04:36,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:04:36,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344909868] [2022-11-26 01:04:36,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344909868] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:04:36,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671946604] [2022-11-26 01:04:36,134 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 01:04:36,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:04:36,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:04:36,143 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:04:36,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-26 01:04:36,339 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 01:04:36,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:04:36,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 163 conjunts are in the unsatisfiable core [2022-11-26 01:04:36,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:04:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6704 backedges. 0 proven. 6704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:04:49,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:05:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6704 backedges. 0 proven. 6704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:05:10,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671946604] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:05:10,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1110776253] [2022-11-26 01:05:10,736 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-26 01:05:10,736 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:05:10,736 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:05:10,736 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:05:10,736 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:05:11,281 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:05:30,371 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '117286#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-11-26 01:05:30,371 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:05:30,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:05:30,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161, 161] total 483 [2022-11-26 01:05:30,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161746506] [2022-11-26 01:05:30,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:05:30,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 485 states [2022-11-26 01:05:30,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:05:30,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 485 interpolants. [2022-11-26 01:05:30,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39885, Invalid=203657, Unknown=0, NotChecked=0, Total=243542 [2022-11-26 01:05:30,389 INFO L87 Difference]: Start difference. First operand 1843 states and 1909 transitions. Second operand has 485 states, 484 states have (on average 2.262396694214876) internal successors, (1095), 484 states have internal predecessors, (1095), 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) [2022-11-26 01:06:58,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:06:58,309 INFO L93 Difference]: Finished difference Result 4331 states and 4513 transitions. [2022-11-26 01:06:58,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 558 states. [2022-11-26 01:06:58,310 INFO L78 Accepts]: Start accepts. Automaton has has 485 states, 484 states have (on average 2.262396694214876) internal successors, (1095), 484 states have internal predecessors, (1095), 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 365 [2022-11-26 01:06:58,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:06:58,315 INFO L225 Difference]: With dead ends: 4331 [2022-11-26 01:06:58,316 INFO L226 Difference]: Without dead ends: 4210 [2022-11-26 01:06:58,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1649 GetRequests, 680 SyntacticMatches, 82 SemanticMatches, 887 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385397 ImplicationChecksByTransitivity, 95.9s TimeCoverageRelationStatistics Valid=158645, Invalid=630787, Unknown=0, NotChecked=0, Total=789432 [2022-11-26 01:06:58,347 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4500 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 3008 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4500 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-26 01:06:58,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4500 Valid, 544 Invalid, 3059 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 3008 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-26 01:06:58,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2022-11-26 01:07:01,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 1963. [2022-11-26 01:07:01,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1963 states, 1962 states have (on average 1.0423037716615697) internal successors, (2045), 1962 states have internal predecessors, (2045), 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) [2022-11-26 01:07:01,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1963 states to 1963 states and 2045 transitions. [2022-11-26 01:07:01,648 INFO L78 Accepts]: Start accepts. Automaton has 1963 states and 2045 transitions. Word has length 365 [2022-11-26 01:07:01,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:07:01,648 INFO L495 AbstractCegarLoop]: Abstraction has 1963 states and 2045 transitions. [2022-11-26 01:07:01,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 485 states, 484 states have (on average 2.262396694214876) internal successors, (1095), 484 states have internal predecessors, (1095), 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) [2022-11-26 01:07:01,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1963 states and 2045 transitions. [2022-11-26 01:07:01,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-11-26 01:07:01,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:01,654 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 74, 21, 21, 21, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1] [2022-11-26 01:07:01,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-26 01:07:01,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df57840d-ad9b-445f-9c1f-da2dd9a2cd21/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-26 01:07:01,861 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:07:01,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:01,862 INFO L85 PathProgramCache]: Analyzing trace with hash 57323643, now seen corresponding path program 13 times [2022-11-26 01:07:01,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:07:01,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208508755] [2022-11-26 01:07:01,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:01,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:07:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat