./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh --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 1978406b317087fc6936fcfda9d4ee773e4c87c61c4595e0ff4751e61b0b216a --- 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-2329fc7 [2022-12-14 12:32:28,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:32:28,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:32:28,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:32:28,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:32:28,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:32:28,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:32:28,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:32:28,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:32:28,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:32:28,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:32:28,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:32:28,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:32:28,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:32:29,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:32:29,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:32:29,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:32:29,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:32:29,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:32:29,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:32:29,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:32:29,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:32:29,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:32:29,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:32:29,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:32:29,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:32:29,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:32:29,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:32:29,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:32:29,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:32:29,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:32:29,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:32:29,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:32:29,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:32:29,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:32:29,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:32:29,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:32:29,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:32:29,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:32:29,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:32:29,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:32:29,024 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 12:32:29,066 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:32:29,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:32:29,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:32:29,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:32:29,067 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:32:29,067 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:32:29,068 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:32:29,068 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:32:29,068 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:32:29,068 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:32:29,068 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:32:29,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:32:29,069 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:32:29,069 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:32:29,069 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:32:29,069 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:32:29,069 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:32:29,069 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:32:29,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:32:29,070 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 12:32:29,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:32:29,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:32:29,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:32:29,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:32:29,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:32:29,071 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 12:32:29,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:32:29,071 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:32:29,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:32:29,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:32:29,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:32:29,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:32:29,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:32:29,073 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:32:29,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:32:29,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:32:29,073 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:32:29,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:32:29,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:32:29,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:32:29,074 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_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1978406b317087fc6936fcfda9d4ee773e4c87c61c4595e0ff4751e61b0b216a [2022-12-14 12:32:29,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:32:29,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:32:29,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:32:29,309 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:32:29,309 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:32:29,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c [2022-12-14 12:32:31,899 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:32:32,031 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:32:32,031 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c [2022-12-14 12:32:32,035 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/data/018460f0c/b6af823804444fa797b2df0f70459cfe/FLAGc25650fb6 [2022-12-14 12:32:32,467 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/data/018460f0c/b6af823804444fa797b2df0f70459cfe [2022-12-14 12:32:32,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:32:32,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:32:32,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:32:32,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:32:32,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:32:32,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:32:32" (1/1) ... [2022-12-14 12:32:32,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc3c7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:32, skipping insertion in model container [2022-12-14 12:32:32,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:32:32" (1/1) ... [2022-12-14 12:32:32,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:32:32,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:32:32,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:32:32,624 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:32:32,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:32:32,649 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:32:32,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:32 WrapperNode [2022-12-14 12:32:32,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:32:32,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:32:32,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:32:32,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:32:32,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:32" (1/1) ... [2022-12-14 12:32:32,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:32" (1/1) ... [2022-12-14 12:32:32,669 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2022-12-14 12:32:32,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:32:32,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:32:32,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:32:32,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:32:32,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:32" (1/1) ... [2022-12-14 12:32:32,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:32" (1/1) ... [2022-12-14 12:32:32,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:32" (1/1) ... [2022-12-14 12:32:32,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:32" (1/1) ... [2022-12-14 12:32:32,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:32" (1/1) ... [2022-12-14 12:32:32,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:32" (1/1) ... [2022-12-14 12:32:32,681 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:32" (1/1) ... [2022-12-14 12:32:32,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:32" (1/1) ... [2022-12-14 12:32:32,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:32:32,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:32:32,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:32:32,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:32:32,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:32" (1/1) ... [2022-12-14 12:32:32,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:32:32,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:32:32,705 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:32:32,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:32:32,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:32:32,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:32:32,791 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:32:32,793 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:32:32,867 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:32:32,879 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:32:32,879 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 12:32:32,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:32:32 BoogieIcfgContainer [2022-12-14 12:32:32,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:32:32,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:32:32,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:32:32,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:32:32,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:32:32" (1/3) ... [2022-12-14 12:32:32,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd90568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:32:32, skipping insertion in model container [2022-12-14 12:32:32,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:32:32" (2/3) ... [2022-12-14 12:32:32,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd90568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:32:32, skipping insertion in model container [2022-12-14 12:32:32,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:32:32" (3/3) ... [2022-12-14 12:32:32,887 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-random2d.c [2022-12-14 12:32:32,901 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:32:32,901 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-14 12:32:32,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:32:32,941 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;@2cda63a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:32:32,941 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-12-14 12:32:32,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:32,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:32:32,949 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:32,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:32:32,950 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:32:32,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:32,953 INFO L85 PathProgramCache]: Analyzing trace with hash 94531, now seen corresponding path program 1 times [2022-12-14 12:32:32,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:32,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511863212] [2022-12-14 12:32:32,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:32,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:33,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:33,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:33,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511863212] [2022-12-14 12:32:33,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511863212] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:32:33,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:32:33,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:32:33,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541258143] [2022-12-14 12:32:33,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:32:33,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:32:33,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:33,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:32:33,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:32:33,109 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:33,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:33,132 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-12-14 12:32:33,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:32:33,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-12-14 12:32:33,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:33,140 INFO L225 Difference]: With dead ends: 28 [2022-12-14 12:32:33,140 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 12:32:33,142 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 [2022-12-14 12:32:33,145 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:33,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 26 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:32:33,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 12:32:33,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-12-14 12:32:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-12-14 12:32:33,169 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 3 [2022-12-14 12:32:33,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:33,169 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-12-14 12:32:33,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:33,170 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-12-14 12:32:33,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 12:32:33,170 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:33,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 12:32:33,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:32:33,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:32:33,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:33,171 INFO L85 PathProgramCache]: Analyzing trace with hash 2930506, now seen corresponding path program 1 times [2022-12-14 12:32:33,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:33,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379368990] [2022-12-14 12:32:33,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:33,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:33,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:33,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:33,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379368990] [2022-12-14 12:32:33,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379368990] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:32:33,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:32:33,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:32:33,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323949550] [2022-12-14 12:32:33,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:32:33,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:32:33,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:33,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:32:33,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:32:33,196 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:33,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:33,212 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-12-14 12:32:33,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:32:33,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 12:32:33,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:33,213 INFO L225 Difference]: With dead ends: 30 [2022-12-14 12:32:33,213 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 12:32:33,213 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 [2022-12-14 12:32:33,214 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:33,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:32:33,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 12:32:33,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-14 12:32:33,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.7) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:33,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-12-14 12:32:33,219 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 4 [2022-12-14 12:32:33,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:33,219 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-12-14 12:32:33,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:33,219 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-12-14 12:32:33,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 12:32:33,219 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:33,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:32:33,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:32:33,220 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:32:33,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:33,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1403406088, now seen corresponding path program 1 times [2022-12-14 12:32:33,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:33,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053864724] [2022-12-14 12:32:33,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:33,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:33,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:33,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053864724] [2022-12-14 12:32:33,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053864724] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:32:33,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:32:33,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:32:33,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41272550] [2022-12-14 12:32:33,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:32:33,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:32:33,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:33,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:32:33,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:32:33,257 INFO L87 Difference]: Start difference. First operand 29 states and 34 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) [2022-12-14 12:32:33,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:33,285 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2022-12-14 12:32:33,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:32:33,285 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 [2022-12-14 12:32:33,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:33,286 INFO L225 Difference]: With dead ends: 52 [2022-12-14 12:32:33,286 INFO L226 Difference]: Without dead ends: 50 [2022-12-14 12:32:33,286 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 [2022-12-14 12:32:33,287 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:33,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:32:33,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-14 12:32:33,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2022-12-14 12:32:33,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:33,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2022-12-14 12:32:33,293 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 7 [2022-12-14 12:32:33,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:33,293 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2022-12-14 12:32:33,293 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) [2022-12-14 12:32:33,293 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2022-12-14 12:32:33,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 12:32:33,294 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:33,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:32:33,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 12:32:33,294 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:32:33,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:33,295 INFO L85 PathProgramCache]: Analyzing trace with hash 555915823, now seen corresponding path program 1 times [2022-12-14 12:32:33,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:33,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539279459] [2022-12-14 12:32:33,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:33,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:33,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:33,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:33,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539279459] [2022-12-14 12:32:33,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539279459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:32:33,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:32:33,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:32:33,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406311663] [2022-12-14 12:32:33,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:32:33,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:32:33,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:33,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:32:33,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:32:33,326 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:33,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:33,353 INFO L93 Difference]: Finished difference Result 82 states and 116 transitions. [2022-12-14 12:32:33,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:32:33,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 12:32:33,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:33,355 INFO L225 Difference]: With dead ends: 82 [2022-12-14 12:32:33,355 INFO L226 Difference]: Without dead ends: 80 [2022-12-14 12:32:33,356 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 [2022-12-14 12:32:33,357 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:33,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:32:33,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-14 12:32:33,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2022-12-14 12:32:33,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.7121212121212122) internal successors, (113), 74 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 113 transitions. [2022-12-14 12:32:33,364 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 113 transitions. Word has length 8 [2022-12-14 12:32:33,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:33,365 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 113 transitions. [2022-12-14 12:32:33,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:33,365 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 113 transitions. [2022-12-14 12:32:33,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 12:32:33,365 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:33,365 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2022-12-14 12:32:33,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 12:32:33,366 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:32:33,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:33,366 INFO L85 PathProgramCache]: Analyzing trace with hash 557067742, now seen corresponding path program 1 times [2022-12-14 12:32:33,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:33,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723662594] [2022-12-14 12:32:33,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:33,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:33,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:33,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:33,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723662594] [2022-12-14 12:32:33,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723662594] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:32:33,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279243396] [2022-12-14 12:32:33,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:33,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:33,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:32:33,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:32:33,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:32:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:33,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:32:33,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:32:33,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:33,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:32:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:33,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279243396] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:32:33,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [664487759] [2022-12-14 12:32:33,518 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-12-14 12:32:33,518 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:32:33,520 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:32:33,524 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:32:33,525 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:32:33,644 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:32:33,694 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '479#(and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2022-12-14 12:32:33,695 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:32:33,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:32:33,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-14 12:32:33,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330263481] [2022-12-14 12:32:33,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:32:33,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:32:33,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:33,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:32:33,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-14 12:32:33,697 INFO L87 Difference]: Start difference. First operand 75 states and 113 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 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) [2022-12-14 12:32:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:33,733 INFO L93 Difference]: Finished difference Result 230 states and 341 transitions. [2022-12-14 12:32:33,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:32:33,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 12:32:33,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:33,736 INFO L225 Difference]: With dead ends: 230 [2022-12-14 12:32:33,736 INFO L226 Difference]: Without dead ends: 229 [2022-12-14 12:32:33,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-14 12:32:33,737 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 93 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:33,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 131 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:32:33,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-12-14 12:32:33,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 209. [2022-12-14 12:32:33,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 200 states have (on average 1.65) internal successors, (330), 208 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:33,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 330 transitions. [2022-12-14 12:32:33,749 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 330 transitions. Word has length 8 [2022-12-14 12:32:33,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:33,749 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 330 transitions. [2022-12-14 12:32:33,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 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) [2022-12-14 12:32:33,749 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 330 transitions. [2022-12-14 12:32:33,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 12:32:33,750 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:33,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:32:33,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:32:33,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:33,952 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:32:33,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:33,953 INFO L85 PathProgramCache]: Analyzing trace with hash 53713073, now seen corresponding path program 1 times [2022-12-14 12:32:33,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:33,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815520359] [2022-12-14 12:32:33,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:33,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:34,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:34,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815520359] [2022-12-14 12:32:34,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815520359] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:32:34,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:32:34,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:32:34,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744475643] [2022-12-14 12:32:34,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:32:34,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:32:34,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:34,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:32:34,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:32:34,052 INFO L87 Difference]: Start difference. First operand 209 states and 330 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:34,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:34,117 INFO L93 Difference]: Finished difference Result 353 states and 554 transitions. [2022-12-14 12:32:34,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:32:34,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 12:32:34,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:34,120 INFO L225 Difference]: With dead ends: 353 [2022-12-14 12:32:34,120 INFO L226 Difference]: Without dead ends: 351 [2022-12-14 12:32:34,120 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 [2022-12-14 12:32:34,121 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:34,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:32:34,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-12-14 12:32:34,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 338. [2022-12-14 12:32:34,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 329 states have (on average 1.5623100303951367) internal successors, (514), 337 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 514 transitions. [2022-12-14 12:32:34,145 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 514 transitions. Word has length 9 [2022-12-14 12:32:34,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:34,145 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 514 transitions. [2022-12-14 12:32:34,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:34,145 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 514 transitions. [2022-12-14 12:32:34,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 12:32:34,145 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:34,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:32:34,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 12:32:34,146 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:32:34,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:34,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1665105336, now seen corresponding path program 1 times [2022-12-14 12:32:34,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:34,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682160611] [2022-12-14 12:32:34,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:34,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:34,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:34,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:34,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682160611] [2022-12-14 12:32:34,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682160611] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:32:34,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:32:34,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:32:34,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39237711] [2022-12-14 12:32:34,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:32:34,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:32:34,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:34,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:32:34,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:32:34,170 INFO L87 Difference]: Start difference. First operand 338 states and 514 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-12-14 12:32:34,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:34,196 INFO L93 Difference]: Finished difference Result 564 states and 855 transitions. [2022-12-14 12:32:34,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:32:34,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 [2022-12-14 12:32:34,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:34,198 INFO L225 Difference]: With dead ends: 564 [2022-12-14 12:32:34,198 INFO L226 Difference]: Without dead ends: 562 [2022-12-14 12:32:34,198 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 [2022-12-14 12:32:34,199 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:34,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:32:34,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-12-14 12:32:34,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 557. [2022-12-14 12:32:34,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 548 states have (on average 1.5018248175182483) internal successors, (823), 556 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:34,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 823 transitions. [2022-12-14 12:32:34,216 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 823 transitions. Word has length 10 [2022-12-14 12:32:34,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:34,216 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 823 transitions. [2022-12-14 12:32:34,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-12-14 12:32:34,217 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 823 transitions. [2022-12-14 12:32:34,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 12:32:34,217 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:34,217 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1] [2022-12-14 12:32:34,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 12:32:34,217 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:32:34,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:34,218 INFO L85 PathProgramCache]: Analyzing trace with hash 12844193, now seen corresponding path program 1 times [2022-12-14 12:32:34,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:34,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231908405] [2022-12-14 12:32:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:34,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:34,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:34,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231908405] [2022-12-14 12:32:34,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231908405] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:32:34,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500957539] [2022-12-14 12:32:34,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:34,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:34,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:32:34,254 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:32:34,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 12:32:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:34,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:32:34,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:32:34,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:34,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:32:34,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:34,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500957539] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:32:34,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1508105526] [2022-12-14 12:32:34,332 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 12:32:34,332 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:32:34,332 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:32:34,333 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:32:34,333 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:32:34,475 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:32:34,672 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3014#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| 0) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~N~0#1| 10))' at error location [2022-12-14 12:32:34,672 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:32:34,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:32:34,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-14 12:32:34,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770748008] [2022-12-14 12:32:34,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:32:34,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:32:34,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:34,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:32:34,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-12-14 12:32:34,674 INFO L87 Difference]: Start difference. First operand 557 states and 823 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:34,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:34,739 INFO L93 Difference]: Finished difference Result 1057 states and 1610 transitions. [2022-12-14 12:32:34,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:32:34,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 [2022-12-14 12:32:34,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:34,744 INFO L225 Difference]: With dead ends: 1057 [2022-12-14 12:32:34,744 INFO L226 Difference]: Without dead ends: 1055 [2022-12-14 12:32:34,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-12-14 12:32:34,745 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 138 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:34,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 112 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:32:34,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2022-12-14 12:32:34,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 915. [2022-12-14 12:32:34,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 906 states have (on average 1.520971302428256) internal successors, (1378), 914 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1378 transitions. [2022-12-14 12:32:34,767 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1378 transitions. Word has length 15 [2022-12-14 12:32:34,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:34,767 INFO L495 AbstractCegarLoop]: Abstraction has 915 states and 1378 transitions. [2022-12-14 12:32:34,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:34,768 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1378 transitions. [2022-12-14 12:32:34,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 12:32:34,768 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:34,768 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:32:34,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 12:32:34,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:34,970 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:32:34,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:34,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1554772082, now seen corresponding path program 1 times [2022-12-14 12:32:34,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:34,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65642260] [2022-12-14 12:32:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:34,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:35,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:35,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65642260] [2022-12-14 12:32:35,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65642260] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:32:35,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569318288] [2022-12-14 12:32:35,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:35,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:35,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:32:35,102 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:32:35,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 12:32:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:35,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:32:35,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:32:35,164 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:35,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:32:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:35,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569318288] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:32:35,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1136728673] [2022-12-14 12:32:35,193 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 12:32:35,193 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:32:35,193 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:32:35,194 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:32:35,194 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:32:35,256 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:32:35,442 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5246#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10) (< (+ 2147483649 |ULTIMATE.start_main_~x~0#1|) 0))' at error location [2022-12-14 12:32:35,442 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:32:35,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:32:35,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-14 12:32:35,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020102626] [2022-12-14 12:32:35,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:32:35,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:32:35,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:35,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:32:35,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-12-14 12:32:35,444 INFO L87 Difference]: Start difference. First operand 915 states and 1378 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:35,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:35,499 INFO L93 Difference]: Finished difference Result 1571 states and 2431 transitions. [2022-12-14 12:32:35,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:32:35,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 [2022-12-14 12:32:35,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:35,503 INFO L225 Difference]: With dead ends: 1571 [2022-12-14 12:32:35,503 INFO L226 Difference]: Without dead ends: 1569 [2022-12-14 12:32:35,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-12-14 12:32:35,504 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 113 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:35,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 88 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:32:35,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2022-12-14 12:32:35,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1076. [2022-12-14 12:32:35,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 1068 states have (on average 1.506554307116105) internal successors, (1609), 1075 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:35,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1609 transitions. [2022-12-14 12:32:35,532 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1609 transitions. Word has length 15 [2022-12-14 12:32:35,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:35,532 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1609 transitions. [2022-12-14 12:32:35,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:35,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1609 transitions. [2022-12-14 12:32:35,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 12:32:35,533 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:35,533 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2022-12-14 12:32:35,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 12:32:35,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:35,734 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:32:35,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:35,735 INFO L85 PathProgramCache]: Analyzing trace with hash 403837505, now seen corresponding path program 1 times [2022-12-14 12:32:35,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:35,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474645833] [2022-12-14 12:32:35,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:35,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:35,814 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:35,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:35,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474645833] [2022-12-14 12:32:35,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474645833] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:32:35,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556304377] [2022-12-14 12:32:35,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:35,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:35,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:32:35,819 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:32:35,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 12:32:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:35,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:32:35,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:32:35,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:35,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:32:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:35,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556304377] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:32:35,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [593706391] [2022-12-14 12:32:35,933 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 12:32:35,933 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:32:35,933 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:32:35,933 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:32:35,933 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:32:35,993 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:32:36,147 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8232#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~N~0#1| 10) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (= 2 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2022-12-14 12:32:36,147 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:32:36,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:32:36,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-14 12:32:36,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31590693] [2022-12-14 12:32:36,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:32:36,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:32:36,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:36,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:32:36,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-12-14 12:32:36,149 INFO L87 Difference]: Start difference. First operand 1076 states and 1609 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 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) [2022-12-14 12:32:36,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:36,217 INFO L93 Difference]: Finished difference Result 2448 states and 3821 transitions. [2022-12-14 12:32:36,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:32:36,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 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) Word has length 19 [2022-12-14 12:32:36,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:36,222 INFO L225 Difference]: With dead ends: 2448 [2022-12-14 12:32:36,222 INFO L226 Difference]: Without dead ends: 2446 [2022-12-14 12:32:36,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-12-14 12:32:36,224 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 96 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:36,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 107 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:32:36,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2022-12-14 12:32:36,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 2127. [2022-12-14 12:32:36,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 2119 states have (on average 1.5181689476168003) internal successors, (3217), 2126 states have internal predecessors, (3217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:36,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 3217 transitions. [2022-12-14 12:32:36,267 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 3217 transitions. Word has length 19 [2022-12-14 12:32:36,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:36,268 INFO L495 AbstractCegarLoop]: Abstraction has 2127 states and 3217 transitions. [2022-12-14 12:32:36,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 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) [2022-12-14 12:32:36,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 3217 transitions. [2022-12-14 12:32:36,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 12:32:36,268 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:36,268 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:32:36,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 12:32:36,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 12:32:36,469 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:32:36,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:36,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2042338236, now seen corresponding path program 1 times [2022-12-14 12:32:36,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:36,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108251793] [2022-12-14 12:32:36,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:36,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:36,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:36,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108251793] [2022-12-14 12:32:36,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108251793] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:32:36,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708642683] [2022-12-14 12:32:36,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:36,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:36,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:32:36,496 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:32:36,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 12:32:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:36,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:32:36,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:32:36,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:36,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:32:36,565 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:36,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708642683] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:32:36,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [792634058] [2022-12-14 12:32:36,567 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-12-14 12:32:36,567 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:32:36,567 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:32:36,567 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:32:36,567 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:32:36,625 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:32:36,822 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13296#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (< (+ 2147483649 |ULTIMATE.start_main_~y~0#1|) 0) (= |ULTIMATE.start_main_~N~0#1| 10) (= 2 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2022-12-14 12:32:36,822 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:32:36,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:32:36,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-14 12:32:36,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527328615] [2022-12-14 12:32:36,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:32:36,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:32:36,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:36,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:32:36,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-12-14 12:32:36,824 INFO L87 Difference]: Start difference. First operand 2127 states and 3217 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 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) [2022-12-14 12:32:36,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:36,906 INFO L93 Difference]: Finished difference Result 4025 states and 6271 transitions. [2022-12-14 12:32:36,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:32:36,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 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) Word has length 19 [2022-12-14 12:32:36,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:36,914 INFO L225 Difference]: With dead ends: 4025 [2022-12-14 12:32:36,914 INFO L226 Difference]: Without dead ends: 4023 [2022-12-14 12:32:36,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-12-14 12:32:36,916 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 104 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:36,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 84 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:32:36,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4023 states. [2022-12-14 12:32:36,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4023 to 2621. [2022-12-14 12:32:36,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2621 states, 2614 states have (on average 1.494644223412395) internal successors, (3907), 2620 states have internal predecessors, (3907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:36,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 3907 transitions. [2022-12-14 12:32:36,967 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 3907 transitions. Word has length 19 [2022-12-14 12:32:36,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:36,967 INFO L495 AbstractCegarLoop]: Abstraction has 2621 states and 3907 transitions. [2022-12-14 12:32:36,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 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) [2022-12-14 12:32:36,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 3907 transitions. [2022-12-14 12:32:36,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 12:32:36,968 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:36,968 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1] [2022-12-14 12:32:36,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 12:32:37,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:37,168 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:32:37,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:37,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1908282778, now seen corresponding path program 2 times [2022-12-14 12:32:37,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:37,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836453357] [2022-12-14 12:32:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:37,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 12:32:37,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:37,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836453357] [2022-12-14 12:32:37,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836453357] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:32:37,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289549355] [2022-12-14 12:32:37,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:32:37,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:37,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:32:37,206 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:32:37,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 12:32:37,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 12:32:37,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:32:37,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:32:37,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:32:37,252 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 12:32:37,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:32:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 12:32:37,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289549355] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:32:37,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [423521761] [2022-12-14 12:32:37,280 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-12-14 12:32:37,280 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:32:37,280 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:32:37,280 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:32:37,280 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:32:37,314 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:32:37,348 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20599#(and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2022-12-14 12:32:37,348 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:32:37,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:32:37,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-14 12:32:37,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196377317] [2022-12-14 12:32:37,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:32:37,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:32:37,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:37,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:32:37,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-12-14 12:32:37,350 INFO L87 Difference]: Start difference. First operand 2621 states and 3907 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 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) [2022-12-14 12:32:37,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:37,386 INFO L93 Difference]: Finished difference Result 2621 states and 3907 transitions. [2022-12-14 12:32:37,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:32:37,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 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 20 [2022-12-14 12:32:37,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:37,391 INFO L225 Difference]: With dead ends: 2621 [2022-12-14 12:32:37,391 INFO L226 Difference]: Without dead ends: 2620 [2022-12-14 12:32:37,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-12-14 12:32:37,393 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 47 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:37,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 48 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:32:37,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2022-12-14 12:32:37,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2269. [2022-12-14 12:32:37,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 2263 states have (on average 1.453822359699514) internal successors, (3290), 2268 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:37,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 3290 transitions. [2022-12-14 12:32:37,464 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 3290 transitions. Word has length 20 [2022-12-14 12:32:37,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:37,465 INFO L495 AbstractCegarLoop]: Abstraction has 2269 states and 3290 transitions. [2022-12-14 12:32:37,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 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) [2022-12-14 12:32:37,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 3290 transitions. [2022-12-14 12:32:37,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 12:32:37,465 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:37,466 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1] [2022-12-14 12:32:37,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 12:32:37,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:37,667 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:32:37,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:37,667 INFO L85 PathProgramCache]: Analyzing trace with hash 662930241, now seen corresponding path program 1 times [2022-12-14 12:32:37,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:37,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777430163] [2022-12-14 12:32:37,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:37,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:37,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:37,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777430163] [2022-12-14 12:32:37,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777430163] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:32:37,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195612113] [2022-12-14 12:32:37,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:37,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:37,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:32:37,717 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:32:37,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 12:32:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:37,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:32:37,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:32:37,772 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:37,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:32:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:37,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195612113] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:32:37,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [110887826] [2022-12-14 12:32:37,814 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 12:32:37,814 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:32:37,814 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:32:37,814 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:32:37,815 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:32:37,864 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:32:38,021 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26027#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~r~0#1| 1) (< (+ 2147483647 |ULTIMATE.start_main_~x~0#1|) 0))' at error location [2022-12-14 12:32:38,021 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:32:38,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:32:38,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-14 12:32:38,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598521875] [2022-12-14 12:32:38,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:32:38,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 12:32:38,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:38,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 12:32:38,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-14 12:32:38,023 INFO L87 Difference]: Start difference. First operand 2269 states and 3290 transitions. Second operand has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:38,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:38,165 INFO L93 Difference]: Finished difference Result 6564 states and 9599 transitions. [2022-12-14 12:32:38,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 12:32:38,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-14 12:32:38,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:38,179 INFO L225 Difference]: With dead ends: 6564 [2022-12-14 12:32:38,179 INFO L226 Difference]: Without dead ends: 6563 [2022-12-14 12:32:38,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-14 12:32:38,182 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 166 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:38,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 141 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:32:38,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6563 states. [2022-12-14 12:32:38,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6563 to 5369. [2022-12-14 12:32:38,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5369 states, 5363 states have (on average 1.4501212008204363) internal successors, (7777), 5368 states have internal predecessors, (7777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:38,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5369 states to 5369 states and 7777 transitions. [2022-12-14 12:32:38,313 INFO L78 Accepts]: Start accepts. Automaton has 5369 states and 7777 transitions. Word has length 24 [2022-12-14 12:32:38,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:38,313 INFO L495 AbstractCegarLoop]: Abstraction has 5369 states and 7777 transitions. [2022-12-14 12:32:38,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:38,313 INFO L276 IsEmpty]: Start isEmpty. Operand 5369 states and 7777 transitions. [2022-12-14 12:32:38,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 12:32:38,314 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:38,314 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1] [2022-12-14 12:32:38,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 12:32:38,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 12:32:38,515 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:32:38,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:38,515 INFO L85 PathProgramCache]: Analyzing trace with hash 2119992952, now seen corresponding path program 1 times [2022-12-14 12:32:38,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:38,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572281707] [2022-12-14 12:32:38,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:38,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:38,552 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:38,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:38,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572281707] [2022-12-14 12:32:38,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572281707] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:32:38,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327672089] [2022-12-14 12:32:38,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:38,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:38,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:32:38,554 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:32:38,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 12:32:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:38,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:32:38,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:32:38,605 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:38,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:32:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:38,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327672089] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:32:38,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2115945974] [2022-12-14 12:32:38,641 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 12:32:38,641 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:32:38,642 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:32:38,642 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:32:38,642 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:32:38,695 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:32:38,904 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '39021#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~x~0#1| 0) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (= 3 |ULTIMATE.start_main_~r~0#1|))' at error location [2022-12-14 12:32:38,905 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:32:38,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:32:38,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-14 12:32:38,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024134146] [2022-12-14 12:32:38,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:32:38,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 12:32:38,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:38,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 12:32:38,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-12-14 12:32:38,906 INFO L87 Difference]: Start difference. First operand 5369 states and 7777 transitions. Second operand has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:39,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:39,103 INFO L93 Difference]: Finished difference Result 15528 states and 22703 transitions. [2022-12-14 12:32:39,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 12:32:39,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-12-14 12:32:39,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:39,135 INFO L225 Difference]: With dead ends: 15528 [2022-12-14 12:32:39,135 INFO L226 Difference]: Without dead ends: 15527 [2022-12-14 12:32:39,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-12-14 12:32:39,142 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 121 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:39,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 141 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:32:39,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15527 states. [2022-12-14 12:32:39,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15527 to 12717. [2022-12-14 12:32:39,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12717 states, 12711 states have (on average 1.4463063488317205) internal successors, (18384), 12716 states have internal predecessors, (18384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:39,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12717 states to 12717 states and 18384 transitions. [2022-12-14 12:32:39,416 INFO L78 Accepts]: Start accepts. Automaton has 12717 states and 18384 transitions. Word has length 30 [2022-12-14 12:32:39,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:39,416 INFO L495 AbstractCegarLoop]: Abstraction has 12717 states and 18384 transitions. [2022-12-14 12:32:39,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:39,417 INFO L276 IsEmpty]: Start isEmpty. Operand 12717 states and 18384 transitions. [2022-12-14 12:32:39,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 12:32:39,417 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:39,417 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1] [2022-12-14 12:32:39,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 12:32:39,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:39,619 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:32:39,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:39,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1538687407, now seen corresponding path program 2 times [2022-12-14 12:32:39,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:39,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115754300] [2022-12-14 12:32:39,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:39,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:39,780 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:39,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:39,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115754300] [2022-12-14 12:32:39,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115754300] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:32:39,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230832948] [2022-12-14 12:32:39,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:32:39,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:39,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:32:39,782 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:32:39,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 12:32:39,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 12:32:39,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:32:39,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:32:39,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:32:39,842 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:39,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:32:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:39,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230832948] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:32:39,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1256321637] [2022-12-14 12:32:39,899 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 12:32:39,900 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:32:39,900 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:32:39,900 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:32:39,900 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:32:40,017 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:32:40,171 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '69574#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| 0) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~N~0#1| 10))' at error location [2022-12-14 12:32:40,171 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:32:40,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:32:40,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-14 12:32:40,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925224761] [2022-12-14 12:32:40,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:32:40,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 12:32:40,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:40,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 12:32:40,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-12-14 12:32:40,173 INFO L87 Difference]: Start difference. First operand 12717 states and 18384 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2022-12-14 12:32:40,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:40,773 INFO L93 Difference]: Finished difference Result 43374 states and 64063 transitions. [2022-12-14 12:32:40,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 12:32:40,774 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) Word has length 36 [2022-12-14 12:32:40,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:40,848 INFO L225 Difference]: With dead ends: 43374 [2022-12-14 12:32:40,849 INFO L226 Difference]: Without dead ends: 43372 [2022-12-14 12:32:40,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-12-14 12:32:40,860 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 340 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:40,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 222 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:32:40,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43372 states. [2022-12-14 12:32:41,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43372 to 27313. [2022-12-14 12:32:41,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27313 states, 27307 states have (on average 1.4249826051928076) internal successors, (38912), 27312 states have internal predecessors, (38912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:41,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27313 states to 27313 states and 38912 transitions. [2022-12-14 12:32:41,541 INFO L78 Accepts]: Start accepts. Automaton has 27313 states and 38912 transitions. Word has length 36 [2022-12-14 12:32:41,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:41,541 INFO L495 AbstractCegarLoop]: Abstraction has 27313 states and 38912 transitions. [2022-12-14 12:32:41,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 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) [2022-12-14 12:32:41,541 INFO L276 IsEmpty]: Start isEmpty. Operand 27313 states and 38912 transitions. [2022-12-14 12:32:41,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-14 12:32:41,543 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:41,543 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1] [2022-12-14 12:32:41,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 12:32:41,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:41,744 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:32:41,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:41,744 INFO L85 PathProgramCache]: Analyzing trace with hash -448443912, now seen corresponding path program 2 times [2022-12-14 12:32:41,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:41,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764266791] [2022-12-14 12:32:41,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:41,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:41,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:41,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764266791] [2022-12-14 12:32:41,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764266791] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:32:41,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905039299] [2022-12-14 12:32:41,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:32:41,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:41,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:32:41,824 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:32:41,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 12:32:41,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 12:32:41,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:32:41,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:32:41,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:32:41,901 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:41,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:32:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:41,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905039299] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:32:41,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1244786790] [2022-12-14 12:32:41,957 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 12:32:41,957 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:32:41,957 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:32:41,957 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:32:41,957 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:32:42,017 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:32:42,152 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '145695#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~N~0#1| 10) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (= 2 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| 0))' at error location [2022-12-14 12:32:42,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:32:42,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:32:42,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-14 12:32:42,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001814331] [2022-12-14 12:32:42,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:32:42,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 12:32:42,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:42,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 12:32:42,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2022-12-14 12:32:42,154 INFO L87 Difference]: Start difference. First operand 27313 states and 38912 transitions. Second operand has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:43,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:43,512 INFO L93 Difference]: Finished difference Result 93040 states and 135517 transitions. [2022-12-14 12:32:43,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 12:32:43,513 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 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 [2022-12-14 12:32:43,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:43,611 INFO L225 Difference]: With dead ends: 93040 [2022-12-14 12:32:43,612 INFO L226 Difference]: Without dead ends: 93038 [2022-12-14 12:32:43,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2022-12-14 12:32:43,629 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 329 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:43,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 222 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:32:43,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93038 states. [2022-12-14 12:32:45,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93038 to 58637. [2022-12-14 12:32:45,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58637 states, 58631 states have (on average 1.4046494175436202) internal successors, (82356), 58636 states have internal predecessors, (82356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:45,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58637 states to 58637 states and 82356 transitions. [2022-12-14 12:32:45,350 INFO L78 Accepts]: Start accepts. Automaton has 58637 states and 82356 transitions. Word has length 46 [2022-12-14 12:32:45,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:45,350 INFO L495 AbstractCegarLoop]: Abstraction has 58637 states and 82356 transitions. [2022-12-14 12:32:45,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:45,350 INFO L276 IsEmpty]: Start isEmpty. Operand 58637 states and 82356 transitions. [2022-12-14 12:32:45,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 12:32:45,352 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:45,352 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 1, 1] [2022-12-14 12:32:45,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 12:32:45,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 12:32:45,554 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:32:45,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:45,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2112708967, now seen corresponding path program 2 times [2022-12-14 12:32:45,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:45,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609005411] [2022-12-14 12:32:45,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:45,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:45,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:45,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609005411] [2022-12-14 12:32:45,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609005411] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:32:45,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051072686] [2022-12-14 12:32:45,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:32:45,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:45,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:32:45,642 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:32:45,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 12:32:45,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-14 12:32:45,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:32:45,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 12:32:45,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:32:45,732 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:45,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:32:45,836 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:45,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051072686] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:32:45,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [872999190] [2022-12-14 12:32:45,837 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 12:32:45,837 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:32:45,838 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:32:45,838 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:32:45,838 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:32:45,879 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:32:46,010 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '308516#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~r~0#1| 1) (< (+ 2147483647 |ULTIMATE.start_main_~x~0#1|) 0))' at error location [2022-12-14 12:32:46,010 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:32:46,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:32:46,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-14 12:32:46,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982154302] [2022-12-14 12:32:46,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:32:46,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 12:32:46,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:46,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 12:32:46,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2022-12-14 12:32:46,011 INFO L87 Difference]: Start difference. First operand 58637 states and 82356 transitions. Second operand has 16 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:49,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:49,942 INFO L93 Difference]: Finished difference Result 206447 states and 292608 transitions. [2022-12-14 12:32:49,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 12:32:49,943 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 0 states have call successors, (0), 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 56 [2022-12-14 12:32:49,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:50,210 INFO L225 Difference]: With dead ends: 206447 [2022-12-14 12:32:50,210 INFO L226 Difference]: Without dead ends: 206446 [2022-12-14 12:32:50,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2022-12-14 12:32:50,250 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 558 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:50,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 301 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:32:50,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206446 states. [2022-12-14 12:32:53,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206446 to 114947. [2022-12-14 12:32:53,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114947 states, 114941 states have (on average 1.395550760825119) internal successors, (160406), 114946 states have internal predecessors, (160406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:53,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114947 states to 114947 states and 160406 transitions. [2022-12-14 12:32:53,630 INFO L78 Accepts]: Start accepts. Automaton has 114947 states and 160406 transitions. Word has length 56 [2022-12-14 12:32:53,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:53,630 INFO L495 AbstractCegarLoop]: Abstraction has 114947 states and 160406 transitions. [2022-12-14 12:32:53,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:32:53,631 INFO L276 IsEmpty]: Start isEmpty. Operand 114947 states and 160406 transitions. [2022-12-14 12:32:53,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-14 12:32:53,634 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:53,634 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1] [2022-12-14 12:32:53,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 12:32:53,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 12:32:53,835 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:32:53,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:53,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1749308972, now seen corresponding path program 2 times [2022-12-14 12:32:53,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:53,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524769656] [2022-12-14 12:32:53,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:53,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:32:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:32:53,914 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:53,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:32:53,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524769656] [2022-12-14 12:32:53,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524769656] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:32:53,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273247209] [2022-12-14 12:32:53,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:32:53,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:53,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:32:53,916 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:32:53,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 12:32:53,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-14 12:32:53,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:32:53,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 12:32:53,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:32:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:54,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:32:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:32:54,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273247209] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:32:54,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [723693566] [2022-12-14 12:32:54,122 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 12:32:54,122 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:32:54,122 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:32:54,122 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:32:54,122 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:32:54,170 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:32:54,401 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '652903#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~N~0#1| 10) (= |ULTIMATE.start_main_~x~0#1| 0) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (= 3 |ULTIMATE.start_main_~r~0#1|))' at error location [2022-12-14 12:32:54,401 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:32:54,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:32:54,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-14 12:32:54,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935827842] [2022-12-14 12:32:54,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:32:54,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 12:32:54,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:54,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 12:32:54,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2022-12-14 12:32:54,403 INFO L87 Difference]: Start difference. First operand 114947 states and 160406 transitions. Second operand has 16 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:33:02,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:33:02,413 INFO L93 Difference]: Finished difference Result 404447 states and 569640 transitions. [2022-12-14 12:33:02,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 12:33:02,414 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 0 states have call successors, (0), 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 70 [2022-12-14 12:33:02,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:33:02,965 INFO L225 Difference]: With dead ends: 404447 [2022-12-14 12:33:02,965 INFO L226 Difference]: Without dead ends: 404446 [2022-12-14 12:33:03,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 185 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2022-12-14 12:33:03,015 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 360 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:33:03,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 301 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:33:03,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404446 states. [2022-12-14 12:33:10,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404446 to 225257. [2022-12-14 12:33:10,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225257 states, 225251 states have (on average 1.38679073566821) internal successors, (312376), 225256 states have internal predecessors, (312376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:33:10,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225257 states to 225257 states and 312376 transitions. [2022-12-14 12:33:10,825 INFO L78 Accepts]: Start accepts. Automaton has 225257 states and 312376 transitions. Word has length 70 [2022-12-14 12:33:10,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:33:10,825 INFO L495 AbstractCegarLoop]: Abstraction has 225257 states and 312376 transitions. [2022-12-14 12:33:10,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:33:10,825 INFO L276 IsEmpty]: Start isEmpty. Operand 225257 states and 312376 transitions. [2022-12-14 12:33:10,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 12:33:10,833 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:33:10,833 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 1, 1] [2022-12-14 12:33:10,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 12:33:11,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:33:11,034 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:33:11,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:33:11,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1780898577, now seen corresponding path program 3 times [2022-12-14 12:33:11,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:33:11,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399496914] [2022-12-14 12:33:11,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:33:11,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:33:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:33:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:33:11,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:33:11,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399496914] [2022-12-14 12:33:11,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399496914] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:33:11,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159538147] [2022-12-14 12:33:11,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:33:11,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:33:11,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:33:11,241 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:33:11,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 12:33:11,279 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:33:11,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:33:11,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 12:33:11,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:33:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 385 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:33:11,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:33:11,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159538147] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:33:11,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 12:33:11,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 23 [2022-12-14 12:33:11,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630537212] [2022-12-14 12:33:11,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:33:11,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 12:33:11,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:33:11,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 12:33:11,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-12-14 12:33:11,524 INFO L87 Difference]: Start difference. First operand 225257 states and 312376 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:33:13,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:33:13,317 INFO L93 Difference]: Finished difference Result 243571 states and 336990 transitions. [2022-12-14 12:33:13,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 12:33:13,318 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-12-14 12:33:13,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:33:13,319 INFO L225 Difference]: With dead ends: 243571 [2022-12-14 12:33:13,319 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 12:33:13,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-12-14 12:33:13,408 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 154 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:33:13,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 486 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:33:13,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 12:33:13,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 12:33:13,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:33:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 12:33:13,409 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 78 [2022-12-14 12:33:13,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:33:13,409 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 12:33:13,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:33:13,410 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 12:33:13,410 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 12:33:13,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2022-12-14 12:33:13,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-12-14 12:33:13,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-12-14 12:33:13,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-12-14 12:33:13,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-12-14 12:33:13,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-12-14 12:33:13,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-12-14 12:33:13,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-12-14 12:33:13,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-12-14 12:33:13,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2022-12-14 12:33:13,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-14 12:33:13,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7ac7e01-968b-45bb-b407-831678af9eff/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:33:13,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.