./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/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_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/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_c4760934-b34b-4d00-8302-4a7d393bddaf/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 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 --- 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 05:42:58,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:42:58,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:42:58,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:42:58,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:42:58,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:42:58,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:42:58,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:42:58,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:42:58,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:42:58,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:42:58,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:42:58,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:42:58,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:42:58,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:42:58,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:42:58,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:42:58,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:42:58,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:42:58,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:42:58,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:42:58,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:42:58,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:42:58,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:42:58,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:42:58,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:42:58,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:42:58,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:42:58,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:42:58,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:42:58,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:42:58,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:42:58,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:42:58,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:42:58,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:42:58,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:42:58,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:42:58,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:42:58,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:42:58,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:42:58,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:42:58,169 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 05:42:58,198 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:42:58,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:42:58,198 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:42:58,198 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:42:58,199 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:42:58,199 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:42:58,199 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:42:58,200 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:42:58,200 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:42:58,200 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:42:58,200 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:42:58,200 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:42:58,200 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:42:58,200 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:42:58,201 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:42:58,201 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:42:58,201 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:42:58,201 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:42:58,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:42:58,202 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 05:42:58,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:42:58,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:42:58,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:42:58,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:42:58,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:42:58,203 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 05:42:58,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:42:58,203 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:42:58,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:42:58,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:42:58,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:42:58,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:42:58,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:42:58,204 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:42:58,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:42:58,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:42:58,209 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:42:58,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:42:58,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:42:58,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:42:58,210 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_c4760934-b34b-4d00-8302-4a7d393bddaf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 [2022-12-14 05:42:58,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:42:58,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:42:58,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:42:58,412 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:42:58,412 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:42:58,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2022-12-14 05:43:00,950 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:43:01,082 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:43:01,082 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2022-12-14 05:43:01,086 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/data/15ad8c824/7d5db2043d8744098704774d64fd281e/FLAG8aa2352dd [2022-12-14 05:43:01,510 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/data/15ad8c824/7d5db2043d8744098704774d64fd281e [2022-12-14 05:43:01,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:43:01,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:43:01,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:43:01,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:43:01,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:43:01,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:43:01" (1/1) ... [2022-12-14 05:43:01,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab26f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:43:01, skipping insertion in model container [2022-12-14 05:43:01,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:43:01" (1/1) ... [2022-12-14 05:43:01,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:43:01,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:43:01,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:43:01,635 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:43:01,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:43:01,652 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:43:01,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:43:01 WrapperNode [2022-12-14 05:43:01,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:43:01,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:43:01,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:43:01,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:43:01,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:43:01" (1/1) ... [2022-12-14 05:43:01,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:43:01" (1/1) ... [2022-12-14 05:43:01,673 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2022-12-14 05:43:01,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:43:01,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:43:01,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:43:01,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:43:01,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:43:01" (1/1) ... [2022-12-14 05:43:01,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:43:01" (1/1) ... [2022-12-14 05:43:01,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:43:01" (1/1) ... [2022-12-14 05:43:01,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:43:01" (1/1) ... [2022-12-14 05:43:01,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:43:01" (1/1) ... [2022-12-14 05:43:01,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:43:01" (1/1) ... [2022-12-14 05:43:01,686 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:43:01" (1/1) ... [2022-12-14 05:43:01,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:43:01" (1/1) ... [2022-12-14 05:43:01,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:43:01,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:43:01,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:43:01,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:43:01,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:43:01" (1/1) ... [2022-12-14 05:43:01,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:43:01,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:43:01,710 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:43:01,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:43:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:43:01,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:43:01,814 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:43:01,815 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:43:01,879 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:43:01,892 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:43:01,893 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 05:43:01,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:43:01 BoogieIcfgContainer [2022-12-14 05:43:01,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:43:01,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:43:01,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:43:01,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:43:01,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:43:01" (1/3) ... [2022-12-14 05:43:01,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0af28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:43:01, skipping insertion in model container [2022-12-14 05:43:01,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:43:01" (2/3) ... [2022-12-14 05:43:01,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0af28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:43:01, skipping insertion in model container [2022-12-14 05:43:01,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:43:01" (3/3) ... [2022-12-14 05:43:01,901 INFO L112 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a.c [2022-12-14 05:43:01,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:43:01,916 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-14 05:43:01,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:43:01,957 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;@2d0c8957, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:43:01,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-14 05:43:01,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 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 05:43:01,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 05:43:01,965 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:01,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 05:43:01,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:43:01,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:01,970 INFO L85 PathProgramCache]: Analyzing trace with hash 71275045, now seen corresponding path program 1 times [2022-12-14 05:43:01,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:01,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508085472] [2022-12-14 05:43:01,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:01,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:02,107 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 05:43:02,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:02,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508085472] [2022-12-14 05:43:02,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508085472] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:43:02,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:43:02,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:43:02,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711069216] [2022-12-14 05:43:02,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:43:02,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:43:02,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:02,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:43:02,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:43:02,142 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:43:02,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:02,207 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-12-14 05:43:02,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:43:02,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 05:43:02,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:02,217 INFO L225 Difference]: With dead ends: 28 [2022-12-14 05:43:02,217 INFO L226 Difference]: Without dead ends: 12 [2022-12-14 05:43:02,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:43:02,223 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 16 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:02,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:43:02,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-12-14 05:43:02,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-12-14 05:43:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:43:02,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-12-14 05:43:02,257 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2022-12-14 05:43:02,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:02,258 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-12-14 05:43:02,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:43:02,258 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-12-14 05:43:02,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 05:43:02,259 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:02,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 05:43:02,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:43:02,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:43:02,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:02,261 INFO L85 PathProgramCache]: Analyzing trace with hash 71274263, now seen corresponding path program 1 times [2022-12-14 05:43:02,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:02,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504198696] [2022-12-14 05:43:02,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:02,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:02,309 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 05:43:02,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:02,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504198696] [2022-12-14 05:43:02,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504198696] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:43:02,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:43:02,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:43:02,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948117409] [2022-12-14 05:43:02,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:43:02,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:43:02,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:02,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:43:02,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:43:02,313 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:43:02,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:02,337 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-12-14 05:43:02,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:43:02,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 05:43:02,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:02,338 INFO L225 Difference]: With dead ends: 13 [2022-12-14 05:43:02,339 INFO L226 Difference]: Without dead ends: 12 [2022-12-14 05:43:02,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:43:02,340 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:02,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 6 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:43:02,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-12-14 05:43:02,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2022-12-14 05:43:02,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 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 05:43:02,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-12-14 05:43:02,346 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2022-12-14 05:43:02,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:02,347 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-12-14 05:43:02,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:43:02,347 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-12-14 05:43:02,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 05:43:02,347 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:02,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 05:43:02,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:43:02,348 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:43:02,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:02,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2085465086, now seen corresponding path program 1 times [2022-12-14 05:43:02,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:02,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907817404] [2022-12-14 05:43:02,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:02,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:02,393 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 05:43:02,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:02,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907817404] [2022-12-14 05:43:02,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907817404] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:43:02,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:43:02,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:43:02,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563807299] [2022-12-14 05:43:02,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:43:02,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:43:02,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:02,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:43:02,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:43:02,396 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:43:02,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:02,422 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-12-14 05:43:02,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:43:02,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 05:43:02,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:02,423 INFO L225 Difference]: With dead ends: 14 [2022-12-14 05:43:02,423 INFO L226 Difference]: Without dead ends: 13 [2022-12-14 05:43:02,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:43:02,425 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:02,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 7 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:43:02,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-12-14 05:43:02,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-12-14 05:43:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:43:02,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-12-14 05:43:02,430 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2022-12-14 05:43:02,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:02,431 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-12-14 05:43:02,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:43:02,431 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-12-14 05:43:02,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 05:43:02,432 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:02,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:43:02,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:43:02,432 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:43:02,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:02,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1388363442, now seen corresponding path program 1 times [2022-12-14 05:43:02,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:02,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738163961] [2022-12-14 05:43:02,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:02,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:43:02,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:02,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738163961] [2022-12-14 05:43:02,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738163961] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:43:02,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:43:02,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:43:02,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753330142] [2022-12-14 05:43:02,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:43:02,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:43:02,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:02,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:43:02,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:43:02,471 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 05:43:02,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:02,491 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-12-14 05:43:02,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:43:02,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 05:43:02,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:02,492 INFO L225 Difference]: With dead ends: 24 [2022-12-14 05:43:02,492 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 05:43:02,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:43:02,494 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:02,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:43:02,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 05:43:02,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-12-14 05:43:02,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:43:02,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-12-14 05:43:02,501 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 9 [2022-12-14 05:43:02,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:02,501 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-12-14 05:43:02,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 05:43:02,502 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-12-14 05:43:02,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 05:43:02,502 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:02,502 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-14 05:43:02,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 05:43:02,503 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:43:02,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:02,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1388387691, now seen corresponding path program 1 times [2022-12-14 05:43:02,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:02,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908663869] [2022-12-14 05:43:02,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:02,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:02,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:43:02,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:02,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908663869] [2022-12-14 05:43:02,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908663869] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:43:02,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593639377] [2022-12-14 05:43:02,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:02,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:02,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:43:02,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:43:02,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:43:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:02,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 05:43:02,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:43:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:43:02,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:43:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:43:02,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593639377] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:43:02,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [19908332] [2022-12-14 05:43:02,751 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 05:43:02,751 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:43:02,754 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:43:02,758 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:43:02,759 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:43:02,841 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:43:03,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [19908332] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:43:03,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:43:03,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 12 [2022-12-14 05:43:03,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138745299] [2022-12-14 05:43:03,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:43:03,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:43:03,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:03,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:43:03,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:43:03,039 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:43:03,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:03,081 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-12-14 05:43:03,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:43:03,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 05:43:03,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:03,082 INFO L225 Difference]: With dead ends: 27 [2022-12-14 05:43:03,082 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 05:43:03,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:43:03,084 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:03,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:43:03,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 05:43:03,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2022-12-14 05:43:03,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 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 05:43:03,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-12-14 05:43:03,090 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 9 [2022-12-14 05:43:03,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:03,090 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-12-14 05:43:03,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:43:03,090 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-12-14 05:43:03,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 05:43:03,091 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:03,091 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-12-14 05:43:03,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:43:03,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:03,293 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:43:03,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:03,293 INFO L85 PathProgramCache]: Analyzing trace with hash 101086583, now seen corresponding path program 1 times [2022-12-14 05:43:03,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:03,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360779998] [2022-12-14 05:43:03,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:03,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:43:03,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:03,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360779998] [2022-12-14 05:43:03,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360779998] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:43:03,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890372817] [2022-12-14 05:43:03,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:03,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:03,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:43:03,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:43:03,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:43:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:03,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:43:03,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:43:03,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:43:03,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:43:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:43:03,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890372817] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:43:03,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [662821641] [2022-12-14 05:43:03,524 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:43:03,524 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:43:03,525 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:43:03,525 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:43:03,525 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:43:03,761 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:43:03,900 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '428#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|))' at error location [2022-12-14 05:43:03,900 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:43:03,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:43:03,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-14 05:43:03,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148973320] [2022-12-14 05:43:03,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:43:03,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:43:03,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:03,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:43:03,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:43:03,902 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 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 05:43:03,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:03,937 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2022-12-14 05:43:03,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:43:03,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 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) Word has length 16 [2022-12-14 05:43:03,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:03,939 INFO L225 Difference]: With dead ends: 51 [2022-12-14 05:43:03,939 INFO L226 Difference]: Without dead ends: 50 [2022-12-14 05:43:03,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:43:03,940 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:03,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 17 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:43:03,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-14 05:43:03,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2022-12-14 05:43:03,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 46 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:43:03,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2022-12-14 05:43:03,947 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 16 [2022-12-14 05:43:03,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:03,947 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2022-12-14 05:43:03,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 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 05:43:03,947 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2022-12-14 05:43:03,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 05:43:03,948 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:03,948 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 05:43:03,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 05:43:04,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:04,149 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:43:04,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:04,149 INFO L85 PathProgramCache]: Analyzing trace with hash 101062334, now seen corresponding path program 1 times [2022-12-14 05:43:04,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:04,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424841268] [2022-12-14 05:43:04,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:04,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:04,207 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:43:04,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:04,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424841268] [2022-12-14 05:43:04,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424841268] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:43:04,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006647519] [2022-12-14 05:43:04,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:04,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:04,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:43:04,209 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:43:04,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:43:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:04,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 05:43:04,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:43:04,288 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:43:04,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:43:04,350 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:43:04,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006647519] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:43:04,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1939549020] [2022-12-14 05:43:04,352 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:43:04,352 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:43:04,352 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:43:04,353 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:43:04,353 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:43:04,554 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:43:04,729 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '667#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:43:04,729 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:43:04,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:43:04,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-12-14 05:43:04,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842696993] [2022-12-14 05:43:04,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:43:04,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-14 05:43:04,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:04,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-14 05:43:04,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2022-12-14 05:43:04,731 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 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 05:43:05,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:05,153 INFO L93 Difference]: Finished difference Result 83 states and 97 transitions. [2022-12-14 05:43:05,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-14 05:43:05,153 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 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 16 [2022-12-14 05:43:05,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:05,154 INFO L225 Difference]: With dead ends: 83 [2022-12-14 05:43:05,154 INFO L226 Difference]: Without dead ends: 82 [2022-12-14 05:43:05,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=447, Invalid=1715, Unknown=0, NotChecked=0, Total=2162 [2022-12-14 05:43:05,155 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 75 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:05,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 8 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:43:05,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-12-14 05:43:05,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 59. [2022-12-14 05:43:05,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 58 states have internal predecessors, (71), 0 states have call successors, (0), 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 05:43:05,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-12-14 05:43:05,163 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 16 [2022-12-14 05:43:05,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:05,163 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-12-14 05:43:05,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 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 05:43:05,163 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-12-14 05:43:05,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 05:43:05,164 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:05,164 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 05:43:05,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 05:43:05,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 05:43:05,364 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:43:05,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:05,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1393568990, now seen corresponding path program 2 times [2022-12-14 05:43:05,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:05,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284122182] [2022-12-14 05:43:05,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:05,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 05:43:05,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:05,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284122182] [2022-12-14 05:43:05,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284122182] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:43:05,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945313015] [2022-12-14 05:43:05,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:43:05,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:05,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:43:05,429 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:43:05,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:43:05,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 05:43:05,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:43:05,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 05:43:05,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:43:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:43:05,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:43:05,623 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:43:05,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945313015] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:43:05,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [910519427] [2022-12-14 05:43:05,625 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:43:05,626 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:43:05,626 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:43:05,626 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:43:05,626 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:43:05,816 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:43:06,002 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1053#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:43:06,003 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:43:06,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:43:06,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2022-12-14 05:43:06,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267255927] [2022-12-14 05:43:06,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:43:06,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 05:43:06,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:06,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 05:43:06,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2022-12-14 05:43:06,005 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:43:06,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:06,219 INFO L93 Difference]: Finished difference Result 113 states and 135 transitions. [2022-12-14 05:43:06,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 05:43:06,219 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-12-14 05:43:06,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:06,220 INFO L225 Difference]: With dead ends: 113 [2022-12-14 05:43:06,220 INFO L226 Difference]: Without dead ends: 58 [2022-12-14 05:43:06,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=734, Unknown=0, NotChecked=0, Total=930 [2022-12-14 05:43:06,222 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:06,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:43:06,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-12-14 05:43:06,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2022-12-14 05:43:06,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 54 states have internal predecessors, (63), 0 states have call successors, (0), 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 05:43:06,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2022-12-14 05:43:06,229 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 22 [2022-12-14 05:43:06,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:06,229 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2022-12-14 05:43:06,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:43:06,229 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2022-12-14 05:43:06,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 05:43:06,229 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:06,229 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 1, 1, 1] [2022-12-14 05:43:06,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:43:06,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:06,431 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:43:06,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:06,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1752683710, now seen corresponding path program 3 times [2022-12-14 05:43:06,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:06,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021661411] [2022-12-14 05:43:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:06,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:06,642 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:43:06,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:06,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021661411] [2022-12-14 05:43:06,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021661411] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:43:06,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555239947] [2022-12-14 05:43:06,643 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:43:06,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:06,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:43:06,644 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:43:06,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 05:43:06,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:43:06,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:43:06,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 05:43:06,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:43:06,807 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:43:06,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:43:06,917 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:43:06,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555239947] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:43:06,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2133357413] [2022-12-14 05:43:06,919 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:43:06,919 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:43:06,919 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:43:06,919 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:43:06,919 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:43:07,074 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:43:07,292 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1475#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:43:07,292 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:43:07,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:43:07,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-12-14 05:43:07,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497917401] [2022-12-14 05:43:07,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:43:07,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 05:43:07,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:07,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 05:43:07,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2022-12-14 05:43:07,293 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 25 states, 25 states have (on average 2.56) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 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 05:43:07,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:07,725 INFO L93 Difference]: Finished difference Result 160 states and 184 transitions. [2022-12-14 05:43:07,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 05:43:07,726 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-12-14 05:43:07,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:07,727 INFO L225 Difference]: With dead ends: 160 [2022-12-14 05:43:07,727 INFO L226 Difference]: Without dead ends: 132 [2022-12-14 05:43:07,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=461, Invalid=1989, Unknown=0, NotChecked=0, Total=2450 [2022-12-14 05:43:07,729 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 135 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:07,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:43:07,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-12-14 05:43:07,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 110. [2022-12-14 05:43:07,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 108 states have (on average 1.1851851851851851) internal successors, (128), 109 states have internal predecessors, (128), 0 states have call successors, (0), 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 05:43:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 128 transitions. [2022-12-14 05:43:07,746 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 128 transitions. Word has length 26 [2022-12-14 05:43:07,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:07,746 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 128 transitions. [2022-12-14 05:43:07,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 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 05:43:07,746 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 128 transitions. [2022-12-14 05:43:07,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 05:43:07,747 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:07,747 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 2, 2, 2, 1, 1, 1] [2022-12-14 05:43:07,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 05:43:07,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:07,949 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:43:07,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:07,950 INFO L85 PathProgramCache]: Analyzing trace with hash 214492445, now seen corresponding path program 4 times [2022-12-14 05:43:07,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:07,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871689200] [2022-12-14 05:43:07,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:07,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:43:08,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:08,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871689200] [2022-12-14 05:43:08,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871689200] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:43:08,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598193895] [2022-12-14 05:43:08,058 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 05:43:08,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:08,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:43:08,059 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:43:08,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 05:43:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:08,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:43:08,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:43:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 9 proven. 53 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:43:08,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:43:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:43:08,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598193895] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:43:08,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1130283691] [2022-12-14 05:43:08,275 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:43:08,275 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:43:08,275 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:43:08,275 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:43:08,275 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:43:08,409 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:43:08,636 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2071#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:43:08,637 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:43:08,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:43:08,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-12-14 05:43:08,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334109671] [2022-12-14 05:43:08,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:43:08,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 05:43:08,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:08,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 05:43:08,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2022-12-14 05:43:08,639 INFO L87 Difference]: Start difference. First operand 110 states and 128 transitions. Second operand has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 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 05:43:09,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:09,761 INFO L93 Difference]: Finished difference Result 299 states and 375 transitions. [2022-12-14 05:43:09,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-12-14 05:43:09,761 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 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 29 [2022-12-14 05:43:09,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:09,763 INFO L225 Difference]: With dead ends: 299 [2022-12-14 05:43:09,763 INFO L226 Difference]: Without dead ends: 297 [2022-12-14 05:43:09,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3481 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1881, Invalid=8219, Unknown=0, NotChecked=0, Total=10100 [2022-12-14 05:43:09,765 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 128 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:09,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 7 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:43:09,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-12-14 05:43:09,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 207. [2022-12-14 05:43:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 205 states have (on average 1.2) internal successors, (246), 206 states have internal predecessors, (246), 0 states have call successors, (0), 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 05:43:09,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 246 transitions. [2022-12-14 05:43:09,789 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 246 transitions. Word has length 29 [2022-12-14 05:43:09,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:09,790 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 246 transitions. [2022-12-14 05:43:09,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 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 05:43:09,790 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 246 transitions. [2022-12-14 05:43:09,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 05:43:09,790 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:09,790 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1] [2022-12-14 05:43:09,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 05:43:09,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 05:43:09,992 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:43:09,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:09,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1152997646, now seen corresponding path program 2 times [2022-12-14 05:43:09,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:09,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669997371] [2022-12-14 05:43:09,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:09,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:10,058 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-12-14 05:43:10,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:10,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669997371] [2022-12-14 05:43:10,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669997371] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:43:10,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212608450] [2022-12-14 05:43:10,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:43:10,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:10,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:43:10,059 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:43:10,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 05:43:10,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 05:43:10,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:43:10,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:43:10,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:43:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-12-14 05:43:10,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:43:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-12-14 05:43:10,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212608450] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:43:10,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [376117133] [2022-12-14 05:43:10,138 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:43:10,138 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:43:10,138 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:43:10,138 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:43:10,138 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:43:10,263 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:43:10,368 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3121#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|))' at error location [2022-12-14 05:43:10,368 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:43:10,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:43:10,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2022-12-14 05:43:10,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074360443] [2022-12-14 05:43:10,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:43:10,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:43:10,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:10,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:43:10,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-14 05:43:10,369 INFO L87 Difference]: Start difference. First operand 207 states and 246 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:43:10,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:10,392 INFO L93 Difference]: Finished difference Result 207 states and 246 transitions. [2022-12-14 05:43:10,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:43:10,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-12-14 05:43:10,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:10,393 INFO L225 Difference]: With dead ends: 207 [2022-12-14 05:43:10,393 INFO L226 Difference]: Without dead ends: 206 [2022-12-14 05:43:10,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:43:10,394 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:10,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:43:10,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-12-14 05:43:10,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 180. [2022-12-14 05:43:10,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.1843575418994414) internal successors, (212), 179 states have internal predecessors, (212), 0 states have call successors, (0), 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 05:43:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 212 transitions. [2022-12-14 05:43:10,409 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 212 transitions. Word has length 37 [2022-12-14 05:43:10,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:10,410 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 212 transitions. [2022-12-14 05:43:10,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:43:10,410 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 212 transitions. [2022-12-14 05:43:10,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 05:43:10,410 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:10,410 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 1, 1, 1] [2022-12-14 05:43:10,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 05:43:10,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 05:43:10,612 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:43:10,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:10,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1152973397, now seen corresponding path program 5 times [2022-12-14 05:43:10,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:10,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152142054] [2022-12-14 05:43:10,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:10,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:10,722 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 05:43:10,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:10,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152142054] [2022-12-14 05:43:10,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152142054] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:43:10,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584943515] [2022-12-14 05:43:10,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:43:10,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:10,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:43:10,723 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:43:10,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 05:43:10,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-14 05:43:10,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:43:10,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 05:43:10,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:43:10,828 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 05:43:10,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:43:10,937 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 05:43:10,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584943515] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:43:10,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1295805012] [2022-12-14 05:43:10,939 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:43:10,939 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:43:10,940 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:43:10,940 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:43:10,940 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:43:11,069 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:43:11,212 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3897#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:43:11,212 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:43:11,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:43:11,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-12-14 05:43:11,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742921951] [2022-12-14 05:43:11,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:43:11,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 05:43:11,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:11,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 05:43:11,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2022-12-14 05:43:11,213 INFO L87 Difference]: Start difference. First operand 180 states and 212 transitions. Second operand has 21 states, 20 states have (on average 4.0) internal successors, (80), 21 states have internal predecessors, (80), 0 states have call successors, (0), 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 05:43:12,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:12,239 INFO L93 Difference]: Finished difference Result 1060 states and 1257 transitions. [2022-12-14 05:43:12,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-12-14 05:43:12,239 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.0) internal successors, (80), 21 states have internal predecessors, (80), 0 states have call successors, (0), 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 37 [2022-12-14 05:43:12,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:12,241 INFO L225 Difference]: With dead ends: 1060 [2022-12-14 05:43:12,241 INFO L226 Difference]: Without dead ends: 1059 [2022-12-14 05:43:12,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2789 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1723, Invalid=6109, Unknown=0, NotChecked=0, Total=7832 [2022-12-14 05:43:12,243 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 101 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:12,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 12 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:43:12,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-12-14 05:43:12,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 333. [2022-12-14 05:43:12,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.1626506024096386) internal successors, (386), 332 states have internal predecessors, (386), 0 states have call successors, (0), 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 05:43:12,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 386 transitions. [2022-12-14 05:43:12,274 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 386 transitions. Word has length 37 [2022-12-14 05:43:12,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:12,274 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 386 transitions. [2022-12-14 05:43:12,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.0) internal successors, (80), 21 states have internal predecessors, (80), 0 states have call successors, (0), 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 05:43:12,274 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 386 transitions. [2022-12-14 05:43:12,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-14 05:43:12,275 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:12,275 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 5, 4, 4, 4, 1, 1, 1] [2022-12-14 05:43:12,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 05:43:12,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 05:43:12,477 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:43:12,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:12,478 INFO L85 PathProgramCache]: Analyzing trace with hash 389168205, now seen corresponding path program 6 times [2022-12-14 05:43:12,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:12,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793022287] [2022-12-14 05:43:12,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:12,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 56 proven. 140 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 05:43:12,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:12,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793022287] [2022-12-14 05:43:12,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793022287] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:43:12,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127306524] [2022-12-14 05:43:12,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:43:12,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:12,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:43:12,664 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:43:12,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 05:43:12,690 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:43:12,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:43:12,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 05:43:12,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:43:12,908 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 36 proven. 156 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 05:43:12,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:43:13,045 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 19 proven. 173 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 05:43:13,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127306524] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:43:13,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [738573498] [2022-12-14 05:43:13,047 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:43:13,047 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:43:13,047 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:43:13,047 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:43:13,047 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:43:13,136 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:43:13,535 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6251#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:43:13,535 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:43:13,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:43:13,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 33 [2022-12-14 05:43:13,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938802463] [2022-12-14 05:43:13,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:43:13,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-14 05:43:13,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:13,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-14 05:43:13,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1375, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 05:43:13,537 INFO L87 Difference]: Start difference. First operand 333 states and 386 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 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 05:43:15,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:15,573 INFO L93 Difference]: Finished difference Result 857 states and 1003 transitions. [2022-12-14 05:43:15,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-12-14 05:43:15,573 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-12-14 05:43:15,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:15,576 INFO L225 Difference]: With dead ends: 857 [2022-12-14 05:43:15,576 INFO L226 Difference]: Without dead ends: 657 [2022-12-14 05:43:15,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 114 SyntacticMatches, 8 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3514 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2130, Invalid=9860, Unknown=0, NotChecked=0, Total=11990 [2022-12-14 05:43:15,578 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 251 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:15,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 1 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 05:43:15,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-12-14 05:43:15,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 553. [2022-12-14 05:43:15,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 552 states have (on average 1.164855072463768) internal successors, (643), 552 states have internal predecessors, (643), 0 states have call successors, (0), 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 05:43:15,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 643 transitions. [2022-12-14 05:43:15,640 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 643 transitions. Word has length 49 [2022-12-14 05:43:15,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:15,640 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 643 transitions. [2022-12-14 05:43:15,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 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 05:43:15,641 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 643 transitions. [2022-12-14 05:43:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 05:43:15,642 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:15,643 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 5, 4, 4, 4, 1, 1, 1] [2022-12-14 05:43:15,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 05:43:15,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:15,844 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:43:15,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:15,845 INFO L85 PathProgramCache]: Analyzing trace with hash 129055869, now seen corresponding path program 7 times [2022-12-14 05:43:15,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:15,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647643897] [2022-12-14 05:43:15,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:15,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:15,989 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 240 proven. 136 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-14 05:43:15,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:15,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647643897] [2022-12-14 05:43:15,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647643897] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:43:15,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397894375] [2022-12-14 05:43:15,990 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 05:43:15,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:15,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:43:15,991 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:43:15,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 05:43:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:16,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 05:43:16,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:43:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 258 proven. 118 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-14 05:43:16,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:43:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 245 proven. 131 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-14 05:43:16,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397894375] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:43:16,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [903570773] [2022-12-14 05:43:16,346 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:43:16,347 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:43:16,347 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:43:16,347 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:43:16,347 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:43:16,455 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:43:16,899 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8753#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:43:16,900 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:43:16,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:43:16,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-12-14 05:43:16,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169803104] [2022-12-14 05:43:16,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:43:16,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 05:43:16,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:16,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 05:43:16,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2022-12-14 05:43:16,901 INFO L87 Difference]: Start difference. First operand 553 states and 643 transitions. Second operand has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 23 states have internal predecessors, (74), 0 states have call successors, (0), 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 05:43:17,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:17,300 INFO L93 Difference]: Finished difference Result 597 states and 696 transitions. [2022-12-14 05:43:17,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-14 05:43:17,301 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 23 states have internal predecessors, (74), 0 states have call successors, (0), 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 67 [2022-12-14 05:43:17,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:17,302 INFO L225 Difference]: With dead ends: 597 [2022-12-14 05:43:17,302 INFO L226 Difference]: Without dead ends: 477 [2022-12-14 05:43:17,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 171 SyntacticMatches, 13 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=275, Invalid=1705, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 05:43:17,303 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:17,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:43:17,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-12-14 05:43:17,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 474. [2022-12-14 05:43:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 1.1522198731501057) internal successors, (545), 473 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:43:17,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 545 transitions. [2022-12-14 05:43:17,349 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 545 transitions. Word has length 67 [2022-12-14 05:43:17,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:17,350 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 545 transitions. [2022-12-14 05:43:17,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 23 states have internal predecessors, (74), 0 states have call successors, (0), 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 05:43:17,350 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 545 transitions. [2022-12-14 05:43:17,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-14 05:43:17,350 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:17,350 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 8, 7, 7, 7, 1, 1, 1] [2022-12-14 05:43:17,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-14 05:43:17,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 05:43:17,552 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:43:17,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:17,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1051885294, now seen corresponding path program 8 times [2022-12-14 05:43:17,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:17,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680631834] [2022-12-14 05:43:17,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:17,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 05:43:17,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:17,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680631834] [2022-12-14 05:43:17,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680631834] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:43:17,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328297555] [2022-12-14 05:43:17,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:43:17,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:17,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:43:17,715 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:43:17,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 05:43:17,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-12-14 05:43:17,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:43:17,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 05:43:17,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:43:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 184 proven. 184 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-14 05:43:17,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:43:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 184 proven. 184 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-14 05:43:18,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328297555] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:43:18,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1726000452] [2022-12-14 05:43:18,203 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:43:18,203 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:43:18,203 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:43:18,203 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:43:18,203 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:43:18,290 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:43:18,885 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10719#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:43:18,885 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:43:18,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:43:18,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 36 [2022-12-14 05:43:18,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225434034] [2022-12-14 05:43:18,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:43:18,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-14 05:43:18,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:18,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-14 05:43:18,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1642, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 05:43:18,887 INFO L87 Difference]: Start difference. First operand 474 states and 545 transitions. Second operand has 37 states, 36 states have (on average 4.111111111111111) internal successors, (148), 37 states have internal predecessors, (148), 0 states have call successors, (0), 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 05:43:29,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:29,483 INFO L93 Difference]: Finished difference Result 1468 states and 1758 transitions. [2022-12-14 05:43:29,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 271 states. [2022-12-14 05:43:29,483 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 4.111111111111111) internal successors, (148), 37 states have internal predecessors, (148), 0 states have call successors, (0), 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 05:43:29,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:29,485 INFO L225 Difference]: With dead ends: 1468 [2022-12-14 05:43:29,485 INFO L226 Difference]: Without dead ends: 1467 [2022-12-14 05:43:29,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 179 SyntacticMatches, 7 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43321 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=18014, Invalid=77158, Unknown=0, NotChecked=0, Total=95172 [2022-12-14 05:43:29,493 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1473 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 657 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:29,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 2 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [657 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 05:43:29,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2022-12-14 05:43:29,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 770. [2022-12-14 05:43:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 1.1781534460338101) internal successors, (906), 769 states have internal predecessors, (906), 0 states have call successors, (0), 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 05:43:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 906 transitions. [2022-12-14 05:43:29,586 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 906 transitions. Word has length 70 [2022-12-14 05:43:29,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:29,587 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 906 transitions. [2022-12-14 05:43:29,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 4.111111111111111) internal successors, (148), 37 states have internal predecessors, (148), 0 states have call successors, (0), 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 05:43:29,587 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 906 transitions. [2022-12-14 05:43:29,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 05:43:29,587 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:29,588 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 1, 1, 1] [2022-12-14 05:43:29,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-14 05:43:29,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 05:43:29,789 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:43:29,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:29,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1973584373, now seen corresponding path program 9 times [2022-12-14 05:43:29,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:29,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968573432] [2022-12-14 05:43:29,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:29,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:43:29,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:29,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968573432] [2022-12-14 05:43:29,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968573432] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:43:29,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577940985] [2022-12-14 05:43:29,968 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:43:29,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:29,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:43:29,969 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:43:29,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 05:43:30,008 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:43:30,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:43:30,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 05:43:30,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:43:30,107 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:43:30,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:43:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:43:30,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577940985] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:43:30,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [155881663] [2022-12-14 05:43:30,312 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:43:30,312 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:43:30,312 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:43:30,312 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:43:30,313 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:43:30,416 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:43:30,968 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14825#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:43:30,968 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:43:30,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:43:30,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-12-14 05:43:30,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018925216] [2022-12-14 05:43:30,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:43:30,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-14 05:43:30,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:30,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-14 05:43:30,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1198, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 05:43:30,970 INFO L87 Difference]: Start difference. First operand 770 states and 906 transitions. Second operand has 33 states, 32 states have (on average 5.125) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 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 05:43:34,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:34,892 INFO L93 Difference]: Finished difference Result 6674 states and 7979 transitions. [2022-12-14 05:43:34,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2022-12-14 05:43:34,893 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.125) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 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 79 [2022-12-14 05:43:34,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:34,903 INFO L225 Difference]: With dead ends: 6674 [2022-12-14 05:43:34,903 INFO L226 Difference]: Without dead ends: 6673 [2022-12-14 05:43:34,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 202 SyntacticMatches, 10 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15948 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=8352, Invalid=28320, Unknown=0, NotChecked=0, Total=36672 [2022-12-14 05:43:34,906 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 255 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:34,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 21 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 05:43:34,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6673 states. [2022-12-14 05:43:35,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6673 to 2752. [2022-12-14 05:43:35,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2752 states, 2751 states have (on average 1.1686659396583061) internal successors, (3215), 2751 states have internal predecessors, (3215), 0 states have call successors, (0), 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 05:43:35,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 3215 transitions. [2022-12-14 05:43:35,339 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 3215 transitions. Word has length 79 [2022-12-14 05:43:35,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:35,340 INFO L495 AbstractCegarLoop]: Abstraction has 2752 states and 3215 transitions. [2022-12-14 05:43:35,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.125) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 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 05:43:35,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 3215 transitions. [2022-12-14 05:43:35,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-12-14 05:43:35,342 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:35,342 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 27, 17, 16, 16, 16, 1, 1, 1] [2022-12-14 05:43:35,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 05:43:35,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 05:43:35,543 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:43:35,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:35,544 INFO L85 PathProgramCache]: Analyzing trace with hash 345378525, now seen corresponding path program 10 times [2022-12-14 05:43:35,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:35,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912889608] [2022-12-14 05:43:35,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:35,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2078 backedges. 0 proven. 1391 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2022-12-14 05:43:35,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:35,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912889608] [2022-12-14 05:43:35,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912889608] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:43:35,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416936341] [2022-12-14 05:43:35,768 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 05:43:35,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:35,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:43:35,769 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:43:35,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 05:43:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:35,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 05:43:35,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:43:36,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2078 backedges. 934 proven. 1069 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-14 05:43:36,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:43:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2078 backedges. 923 proven. 1080 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-14 05:43:36,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416936341] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:43:36,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [269212751] [2022-12-14 05:43:36,516 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:43:36,516 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:43:36,516 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:43:36,516 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:43:36,516 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:43:36,635 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:43:36,902 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '29033#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:43:36,902 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:43:36,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:43:36,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23, 23] total 42 [2022-12-14 05:43:36,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786389073] [2022-12-14 05:43:36,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:43:36,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-14 05:43:36,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:36,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-14 05:43:36,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 05:43:36,905 INFO L87 Difference]: Start difference. First operand 2752 states and 3215 transitions. Second operand has 42 states, 42 states have (on average 4.785714285714286) internal successors, (201), 42 states have internal predecessors, (201), 0 states have call successors, (0), 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 05:43:45,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:43:45,924 INFO L93 Difference]: Finished difference Result 5456 states and 6401 transitions. [2022-12-14 05:43:45,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 318 states. [2022-12-14 05:43:45,925 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.785714285714286) internal successors, (201), 42 states have internal predecessors, (201), 0 states have call successors, (0), 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 151 [2022-12-14 05:43:45,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:43:45,930 INFO L225 Difference]: With dead ends: 5456 [2022-12-14 05:43:45,930 INFO L226 Difference]: Without dead ends: 3391 [2022-12-14 05:43:45,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 412 SyntacticMatches, 8 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50577 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=13911, Invalid=110345, Unknown=0, NotChecked=0, Total=124256 [2022-12-14 05:43:45,936 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 321 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1991 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 05:43:45,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1991 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 05:43:45,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3391 states. [2022-12-14 05:43:46,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3391 to 3069. [2022-12-14 05:43:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3069 states, 3068 states have (on average 1.1483050847457628) internal successors, (3523), 3068 states have internal predecessors, (3523), 0 states have call successors, (0), 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 05:43:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 3523 transitions. [2022-12-14 05:43:46,304 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 3523 transitions. Word has length 151 [2022-12-14 05:43:46,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:43:46,305 INFO L495 AbstractCegarLoop]: Abstraction has 3069 states and 3523 transitions. [2022-12-14 05:43:46,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.785714285714286) internal successors, (201), 42 states have internal predecessors, (201), 0 states have call successors, (0), 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 05:43:46,305 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 3523 transitions. [2022-12-14 05:43:46,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-14 05:43:46,307 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:43:46,308 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 28, 18, 17, 17, 17, 1, 1, 1] [2022-12-14 05:43:46,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 05:43:46,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 05:43:46,509 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:43:46,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:43:46,510 INFO L85 PathProgramCache]: Analyzing trace with hash 682014534, now seen corresponding path program 11 times [2022-12-14 05:43:46,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:43:46,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222138798] [2022-12-14 05:43:46,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:43:46,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:43:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:43:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 0 proven. 1584 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2022-12-14 05:43:46,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:43:46,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222138798] [2022-12-14 05:43:46,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222138798] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:43:46,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495809655] [2022-12-14 05:43:46,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:43:46,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:43:46,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:43:46,712 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:43:46,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 05:43:46,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2022-12-14 05:43:46,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:43:46,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 05:43:46,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:43:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 976 proven. 1048 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-12-14 05:43:47,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:43:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 976 proven. 1048 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-12-14 05:43:47,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495809655] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:43:47,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [374491192] [2022-12-14 05:43:47,725 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:43:47,725 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:43:47,725 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:43:47,725 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:43:47,725 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:43:47,855 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:43:48,081 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '42394#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:43:48,081 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:43:48,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:43:48,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 50 [2022-12-14 05:43:48,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983217403] [2022-12-14 05:43:48,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:43:48,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-14 05:43:48,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:43:48,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-14 05:43:48,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=2653, Unknown=0, NotChecked=0, Total=3192 [2022-12-14 05:43:48,084 INFO L87 Difference]: Start difference. First operand 3069 states and 3523 transitions. Second operand has 51 states, 50 states have (on average 4.96) internal successors, (248), 51 states have internal predecessors, (248), 0 states have call successors, (0), 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 05:44:19,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:44:19,780 INFO L93 Difference]: Finished difference Result 8172 states and 9664 transitions. [2022-12-14 05:44:19,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 527 states. [2022-12-14 05:44:19,780 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 4.96) internal successors, (248), 51 states have internal predecessors, (248), 0 states have call successors, (0), 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 158 [2022-12-14 05:44:19,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:44:19,793 INFO L225 Difference]: With dead ends: 8172 [2022-12-14 05:44:19,793 INFO L226 Difference]: Without dead ends: 8171 [2022-12-14 05:44:19,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 576 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165859 ImplicationChecksByTransitivity, 29.5s TimeCoverageRelationStatistics Valid=67622, Invalid=265884, Unknown=0, NotChecked=0, Total=333506 [2022-12-14 05:44:19,809 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 2181 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 1204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1204 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:44:19,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2181 Valid, 2 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1204 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 05:44:19,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8171 states. [2022-12-14 05:44:20,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8171 to 3210. [2022-12-14 05:44:20,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3210 states, 3209 states have (on average 1.1542536615768153) internal successors, (3704), 3209 states have internal predecessors, (3704), 0 states have call successors, (0), 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 05:44:20,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 3704 transitions. [2022-12-14 05:44:20,511 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 3704 transitions. Word has length 158 [2022-12-14 05:44:20,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:44:20,512 INFO L495 AbstractCegarLoop]: Abstraction has 3210 states and 3704 transitions. [2022-12-14 05:44:20,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 4.96) internal successors, (248), 51 states have internal predecessors, (248), 0 states have call successors, (0), 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 05:44:20,512 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 3704 transitions. [2022-12-14 05:44:20,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-12-14 05:44:20,515 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:44:20,515 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 22, 22, 22, 1, 1, 1] [2022-12-14 05:44:20,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 05:44:20,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 05:44:20,716 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:44:20,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:44:20,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1182467787, now seen corresponding path program 12 times [2022-12-14 05:44:20,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:44:20,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566411747] [2022-12-14 05:44:20,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:44:20,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:44:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:44:21,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 0 proven. 2280 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 05:44:21,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:44:21,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566411747] [2022-12-14 05:44:21,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566411747] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:44:21,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62158046] [2022-12-14 05:44:21,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:44:21,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:44:21,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:44:21,159 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:44:21,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 05:44:21,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:44:21,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:44:21,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-14 05:44:21,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:44:21,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 0 proven. 2280 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 05:44:21,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:44:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 0 proven. 2280 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 05:44:22,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62158046] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:44:22,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1708011733] [2022-12-14 05:44:22,110 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:44:22,110 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:44:22,111 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:44:22,111 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:44:22,111 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:44:22,232 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:44:22,499 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '60131#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:44:22,499 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:44:22,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:44:22,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 56 [2022-12-14 05:44:22,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828856902] [2022-12-14 05:44:22,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:44:22,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-12-14 05:44:22,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:44:22,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-12-14 05:44:22,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1224, Invalid=2682, Unknown=0, NotChecked=0, Total=3906 [2022-12-14 05:44:22,502 INFO L87 Difference]: Start difference. First operand 3210 states and 3704 transitions. Second operand has 57 states, 56 states have (on average 5.928571428571429) internal successors, (332), 57 states have internal predecessors, (332), 0 states have call successors, (0), 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 05:44:41,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:44:41,345 INFO L93 Difference]: Finished difference Result 41157 states and 49101 transitions. [2022-12-14 05:44:41,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 382 states. [2022-12-14 05:44:41,346 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 5.928571428571429) internal successors, (332), 57 states have internal predecessors, (332), 0 states have call successors, (0), 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 163 [2022-12-14 05:44:41,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:44:41,415 INFO L225 Difference]: With dead ends: 41157 [2022-12-14 05:44:41,415 INFO L226 Difference]: Without dead ends: 41156 [2022-12-14 05:44:41,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 393 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70032 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=36364, Invalid=119266, Unknown=0, NotChecked=0, Total=155630 [2022-12-14 05:44:41,427 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 541 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 05:44:41,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 41 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 05:44:41,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41156 states. [2022-12-14 05:44:43,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41156 to 15060. [2022-12-14 05:44:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15060 states, 15059 states have (on average 1.1729198485955243) internal successors, (17663), 15059 states have internal predecessors, (17663), 0 states have call successors, (0), 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 05:44:43,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15060 states to 15060 states and 17663 transitions. [2022-12-14 05:44:43,334 INFO L78 Accepts]: Start accepts. Automaton has 15060 states and 17663 transitions. Word has length 163 [2022-12-14 05:44:43,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:44:43,334 INFO L495 AbstractCegarLoop]: Abstraction has 15060 states and 17663 transitions. [2022-12-14 05:44:43,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 5.928571428571429) internal successors, (332), 57 states have internal predecessors, (332), 0 states have call successors, (0), 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 05:44:43,335 INFO L276 IsEmpty]: Start isEmpty. Operand 15060 states and 17663 transitions. [2022-12-14 05:44:43,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-12-14 05:44:43,344 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:44:43,344 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 53, 31, 30, 30, 30, 1, 1, 1] [2022-12-14 05:44:43,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 05:44:43,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:44:43,546 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:44:43,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:44:43,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1793981971, now seen corresponding path program 13 times [2022-12-14 05:44:43,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:44:43,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489303090] [2022-12-14 05:44:43,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:44:43,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:44:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:44:43,876 INFO L134 CoverageAnalysis]: Checked inductivity of 7683 backedges. 0 proven. 3574 refuted. 0 times theorem prover too weak. 4109 trivial. 0 not checked. [2022-12-14 05:44:43,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:44:43,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489303090] [2022-12-14 05:44:43,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489303090] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:44:43,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290544312] [2022-12-14 05:44:43,877 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 05:44:43,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:44:43,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:44:43,878 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:44:43,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 05:44:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:44:43,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 05:44:43,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:44:44,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7683 backedges. 4518 proven. 1688 refuted. 0 times theorem prover too weak. 1477 trivial. 0 not checked. [2022-12-14 05:44:44,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:44:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 7683 backedges. 4503 proven. 1703 refuted. 0 times theorem prover too weak. 1477 trivial. 0 not checked. [2022-12-14 05:44:44,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290544312] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:44:44,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [469462881] [2022-12-14 05:44:44,740 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:44:44,740 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:44:44,740 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:44:44,740 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:44:44,740 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:44:44,819 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:44:46,498 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '139936#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:44:46,498 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:44:46,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:44:46,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27, 27] total 48 [2022-12-14 05:44:46,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203630980] [2022-12-14 05:44:46,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:44:46,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 05:44:46,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:44:46,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 05:44:46,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=2573, Unknown=0, NotChecked=0, Total=2970 [2022-12-14 05:44:46,500 INFO L87 Difference]: Start difference. First operand 15060 states and 17663 transitions. Second operand has 48 states, 48 states have (on average 5.0625) internal successors, (243), 48 states have internal predecessors, (243), 0 states have call successors, (0), 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 05:45:02,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:45:02,981 INFO L93 Difference]: Finished difference Result 29026 states and 34179 transitions. [2022-12-14 05:45:02,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 513 states. [2022-12-14 05:45:02,982 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.0625) internal successors, (243), 48 states have internal predecessors, (243), 0 states have call successors, (0), 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 285 [2022-12-14 05:45:02,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:45:03,002 INFO L225 Difference]: With dead ends: 29026 [2022-12-14 05:45:03,002 INFO L226 Difference]: Without dead ends: 15795 [2022-12-14 05:45:03,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1368 GetRequests, 777 SyntacticMatches, 40 SemanticMatches, 551 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135174 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=32050, Invalid=273206, Unknown=0, NotChecked=0, Total=305256 [2022-12-14 05:45:03,020 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 385 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2809 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 3015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 2809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:45:03,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1 Invalid, 3015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 2809 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 05:45:03,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15795 states. [2022-12-14 05:45:04,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15795 to 15085. [2022-12-14 05:45:04,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15085 states, 15084 states have (on average 1.168854415274463) internal successors, (17631), 15084 states have internal predecessors, (17631), 0 states have call successors, (0), 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 05:45:04,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15085 states to 15085 states and 17631 transitions. [2022-12-14 05:45:04,948 INFO L78 Accepts]: Start accepts. Automaton has 15085 states and 17631 transitions. Word has length 285 [2022-12-14 05:45:04,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:45:04,948 INFO L495 AbstractCegarLoop]: Abstraction has 15085 states and 17631 transitions. [2022-12-14 05:45:04,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.0625) internal successors, (243), 48 states have internal predecessors, (243), 0 states have call successors, (0), 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 05:45:04,949 INFO L276 IsEmpty]: Start isEmpty. Operand 15085 states and 17631 transitions. [2022-12-14 05:45:04,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-12-14 05:45:04,958 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:45:04,958 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 54, 32, 31, 31, 31, 1, 1, 1] [2022-12-14 05:45:04,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-14 05:45:05,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:45:05,160 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:45:05,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:45:05,161 INFO L85 PathProgramCache]: Analyzing trace with hash 992962454, now seen corresponding path program 14 times [2022-12-14 05:45:05,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:45:05,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075530367] [2022-12-14 05:45:05,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:45:05,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:45:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:45:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 8051 backedges. 0 proven. 3941 refuted. 0 times theorem prover too weak. 4110 trivial. 0 not checked. [2022-12-14 05:45:05,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:45:05,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075530367] [2022-12-14 05:45:05,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075530367] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:45:05,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079592761] [2022-12-14 05:45:05,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:45:05,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:45:05,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:45:05,478 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:45:05,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 05:45:05,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2022-12-14 05:45:05,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:45:05,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-14 05:45:05,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:45:06,141 INFO L134 CoverageAnalysis]: Checked inductivity of 8051 backedges. 2668 proven. 4936 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2022-12-14 05:45:06,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:45:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 8051 backedges. 2668 proven. 4936 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2022-12-14 05:45:07,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079592761] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:45:07,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1235955564] [2022-12-14 05:45:07,417 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:45:07,417 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:45:07,417 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:45:07,417 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:45:07,417 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:45:07,499 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:45:09,432 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '203788#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:45:09,432 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:45:09,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:45:09,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 30, 30] total 76 [2022-12-14 05:45:09,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502691610] [2022-12-14 05:45:09,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:45:09,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-12-14 05:45:09,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:45:09,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-12-14 05:45:09,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1620, Invalid=5352, Unknown=0, NotChecked=0, Total=6972 [2022-12-14 05:45:09,435 INFO L87 Difference]: Start difference. First operand 15085 states and 17631 transitions. Second operand has 77 states, 76 states have (on average 5.657894736842105) internal successors, (430), 77 states have internal predecessors, (430), 0 states have call successors, (0), 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 05:47:11,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:47:11,586 INFO L93 Difference]: Finished difference Result 49637 states and 59280 transitions. [2022-12-14 05:47:11,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1082 states. [2022-12-14 05:47:11,586 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 5.657894736842105) internal successors, (430), 77 states have internal predecessors, (430), 0 states have call successors, (0), 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 292 [2022-12-14 05:47:11,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:47:11,638 INFO L225 Difference]: With dead ends: 49637 [2022-12-14 05:47:11,638 INFO L226 Difference]: Without dead ends: 49636 [2022-12-14 05:47:11,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1992 GetRequests, 803 SyntacticMatches, 31 SemanticMatches, 1158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720945 ImplicationChecksByTransitivity, 110.2s TimeCoverageRelationStatistics Valid=285051, Invalid=1059389, Unknown=0, NotChecked=0, Total=1344440 [2022-12-14 05:47:11,707 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4162 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 2671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4162 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 4598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2671 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-14 05:47:11,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4162 Valid, 2 Invalid, 4598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2671 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-14 05:47:11,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49636 states. [2022-12-14 05:47:15,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49636 to 18759. [2022-12-14 05:47:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18759 states, 18758 states have (on average 1.1704339481821089) internal successors, (21955), 18758 states have internal predecessors, (21955), 0 states have call successors, (0), 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 05:47:15,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18759 states to 18759 states and 21955 transitions. [2022-12-14 05:47:15,857 INFO L78 Accepts]: Start accepts. Automaton has 18759 states and 21955 transitions. Word has length 292 [2022-12-14 05:47:15,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:47:15,858 INFO L495 AbstractCegarLoop]: Abstraction has 18759 states and 21955 transitions. [2022-12-14 05:47:15,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 5.657894736842105) internal successors, (430), 77 states have internal predecessors, (430), 0 states have call successors, (0), 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 05:47:15,858 INFO L276 IsEmpty]: Start isEmpty. Operand 18759 states and 21955 transitions. [2022-12-14 05:47:15,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-12-14 05:47:15,867 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:47:15,867 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 47, 47, 46, 46, 46, 1, 1, 1] [2022-12-14 05:47:15,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-14 05:47:16,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-14 05:47:16,068 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:47:16,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:47:16,068 INFO L85 PathProgramCache]: Analyzing trace with hash 899647413, now seen corresponding path program 15 times [2022-12-14 05:47:16,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:47:16,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783370176] [2022-12-14 05:47:16,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:47:16,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:47:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:47:17,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9778 backedges. 0 proven. 9732 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 05:47:17,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:47:17,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783370176] [2022-12-14 05:47:17,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783370176] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:47:17,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742855100] [2022-12-14 05:47:17,327 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:47:17,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:47:17,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:47:17,328 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:47:17,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-14 05:47:17,393 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:47:17,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:47:17,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-14 05:47:17,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:47:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9778 backedges. 0 proven. 9732 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 05:47:17,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:47:19,661 INFO L134 CoverageAnalysis]: Checked inductivity of 9778 backedges. 0 proven. 9732 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 05:47:19,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742855100] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:47:19,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [285489697] [2022-12-14 05:47:19,663 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:47:19,663 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:47:19,663 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:47:19,663 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:47:19,664 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:47:19,747 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:47:22,711 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '302216#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:47:22,711 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:47:22,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:47:22,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 104 [2022-12-14 05:47:22,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704484765] [2022-12-14 05:47:22,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:47:22,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-12-14 05:47:22,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:47:22,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-12-14 05:47:22,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4718, Invalid=7714, Unknown=0, NotChecked=0, Total=12432 [2022-12-14 05:47:22,716 INFO L87 Difference]: Start difference. First operand 18759 states and 21955 transitions. Second operand has 105 states, 104 states have (on average 6.423076923076923) internal successors, (668), 105 states have internal predecessors, (668), 0 states have call successors, (0), 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 05:49:41,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:49:41,719 INFO L93 Difference]: Finished difference Result 215402 states and 257943 transitions. [2022-12-14 05:49:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 790 states. [2022-12-14 05:49:41,720 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 6.423076923076923) internal successors, (668), 105 states have internal predecessors, (668), 0 states have call successors, (0), 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 331 [2022-12-14 05:49:41,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:49:42,009 INFO L225 Difference]: With dead ends: 215402 [2022-12-14 05:49:42,010 INFO L226 Difference]: Without dead ends: 215401 [2022-12-14 05:49:42,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1734 GetRequests, 886 SyntacticMatches, 46 SemanticMatches, 802 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308196 ImplicationChecksByTransitivity, 36.9s TimeCoverageRelationStatistics Valid=151614, Invalid=493998, Unknown=0, NotChecked=0, Total=645612 [2022-12-14 05:49:42,089 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 784 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:49:42,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 70 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 05:49:42,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215401 states. [2022-12-14 05:49:54,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215401 to 85336. [2022-12-14 05:49:54,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85336 states, 85335 states have (on average 1.1777348098669949) internal successors, (100502), 85335 states have internal predecessors, (100502), 0 states have call successors, (0), 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 05:49:54,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85336 states to 85336 states and 100502 transitions. [2022-12-14 05:49:54,287 INFO L78 Accepts]: Start accepts. Automaton has 85336 states and 100502 transitions. Word has length 331 [2022-12-14 05:49:54,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:49:54,287 INFO L495 AbstractCegarLoop]: Abstraction has 85336 states and 100502 transitions. [2022-12-14 05:49:54,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 6.423076923076923) internal successors, (668), 105 states have internal predecessors, (668), 0 states have call successors, (0), 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 05:49:54,288 INFO L276 IsEmpty]: Start isEmpty. Operand 85336 states and 100502 transitions. [2022-12-14 05:49:54,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2022-12-14 05:49:54,327 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:49:54,328 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 103, 57, 56, 56, 56, 1, 1, 1] [2022-12-14 05:49:54,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-14 05:49:54,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-14 05:49:54,528 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:49:54,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:49:54,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1192138707, now seen corresponding path program 16 times [2022-12-14 05:49:54,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:49:54,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917251834] [2022-12-14 05:49:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:49:54,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:49:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:49:55,049 INFO L134 CoverageAnalysis]: Checked inductivity of 28108 backedges. 0 proven. 8517 refuted. 0 times theorem prover too weak. 19591 trivial. 0 not checked. [2022-12-14 05:49:55,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:49:55,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917251834] [2022-12-14 05:49:55,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917251834] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:49:55,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701037759] [2022-12-14 05:49:55,050 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 05:49:55,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:49:55,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:49:55,051 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:49:55,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 05:49:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:49:55,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-14 05:49:55,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:49:55,726 INFO L134 CoverageAnalysis]: Checked inductivity of 28108 backedges. 14074 proven. 2447 refuted. 0 times theorem prover too weak. 11587 trivial. 0 not checked. [2022-12-14 05:49:55,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:49:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 28108 backedges. 14055 proven. 2466 refuted. 0 times theorem prover too weak. 11587 trivial. 0 not checked. [2022-12-14 05:49:56,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701037759] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:49:56,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1214214058] [2022-12-14 05:49:56,332 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:49:56,332 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:49:56,332 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:49:56,332 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:49:56,332 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:49:56,445 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:49:56,781 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '721250#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:49:56,781 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:49:56,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:49:56,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 31, 31] total 54 [2022-12-14 05:49:56,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832332665] [2022-12-14 05:49:56,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:49:56,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-12-14 05:49:56,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:49:56,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-12-14 05:49:56,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=3049, Unknown=0, NotChecked=0, Total=3540 [2022-12-14 05:49:56,783 INFO L87 Difference]: Start difference. First operand 85336 states and 100502 transitions. Second operand has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:50:35,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:50:35,347 INFO L93 Difference]: Finished difference Result 168001 states and 198157 transitions. [2022-12-14 05:50:35,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 755 states. [2022-12-14 05:50:35,348 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 539 [2022-12-14 05:50:35,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:50:35,446 INFO L225 Difference]: With dead ends: 168001 [2022-12-14 05:50:35,446 INFO L226 Difference]: Without dead ends: 86589 [2022-12-14 05:50:35,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2372 GetRequests, 1564 SyntacticMatches, 12 SemanticMatches, 796 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289969 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=64085, Invalid=571921, Unknown=0, NotChecked=0, Total=636006 [2022-12-14 05:50:35,505 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 437 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3906 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 4140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 3906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 05:50:35,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1 Invalid, 4140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 3906 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 05:50:35,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86589 states. [2022-12-14 05:50:47,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86589 to 84971. [2022-12-14 05:50:47,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84971 states, 84970 states have (on average 1.176438743085795) internal successors, (99962), 84970 states have internal predecessors, (99962), 0 states have call successors, (0), 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 05:50:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84971 states to 84971 states and 99962 transitions. [2022-12-14 05:50:47,387 INFO L78 Accepts]: Start accepts. Automaton has 84971 states and 99962 transitions. Word has length 539 [2022-12-14 05:50:47,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:50:47,387 INFO L495 AbstractCegarLoop]: Abstraction has 84971 states and 99962 transitions. [2022-12-14 05:50:47,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.277777777777778) internal successors, (285), 54 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:50:47,387 INFO L276 IsEmpty]: Start isEmpty. Operand 84971 states and 99962 transitions. [2022-12-14 05:50:47,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2022-12-14 05:50:47,427 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:50:47,428 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 104, 58, 57, 57, 57, 1, 1, 1] [2022-12-14 05:50:47,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-14 05:50:47,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-14 05:50:47,629 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:50:47,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:50:47,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1870724074, now seen corresponding path program 17 times [2022-12-14 05:50:47,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:50:47,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762955707] [2022-12-14 05:50:47,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:50:47,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:50:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:50:48,149 INFO L134 CoverageAnalysis]: Checked inductivity of 28806 backedges. 0 proven. 9214 refuted. 0 times theorem prover too weak. 19592 trivial. 0 not checked. [2022-12-14 05:50:48,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:50:48,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762955707] [2022-12-14 05:50:48,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762955707] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:50:48,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15614811] [2022-12-14 05:50:48,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:50:48,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:50:48,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:50:48,150 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:50:48,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 05:50:48,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 90 check-sat command(s) [2022-12-14 05:50:48,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:50:48,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-14 05:50:48,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:50:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 28806 backedges. 933 proven. 8281 refuted. 0 times theorem prover too weak. 19592 trivial. 0 not checked. [2022-12-14 05:50:48,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:50:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 28806 backedges. 133 proven. 9081 refuted. 0 times theorem prover too weak. 19592 trivial. 0 not checked. [2022-12-14 05:50:49,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15614811] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:50:49,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [594584450] [2022-12-14 05:50:49,557 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:50:49,557 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:50:49,557 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:50:49,557 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:50:49,557 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:50:49,678 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:50:49,916 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1076259#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:50:49,917 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:50:49,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:50:49,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 44 [2022-12-14 05:50:49,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644717661] [2022-12-14 05:50:49,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:50:49,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-14 05:50:49,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:50:49,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-14 05:50:49,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=494, Invalid=2056, Unknown=0, NotChecked=0, Total=2550 [2022-12-14 05:50:49,918 INFO L87 Difference]: Start difference. First operand 84971 states and 99962 transitions. Second operand has 45 states, 44 states have (on average 5.2272727272727275) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 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 05:52:13,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:52:13,928 INFO L93 Difference]: Finished difference Result 542909 states and 648573 transitions. [2022-12-14 05:52:13,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 466 states. [2022-12-14 05:52:13,929 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 5.2272727272727275) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 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 546 [2022-12-14 05:52:13,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:52:14,754 INFO L225 Difference]: With dead ends: 542909 [2022-12-14 05:52:14,754 INFO L226 Difference]: Without dead ends: 542908 [2022-12-14 05:52:14,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2111 GetRequests, 1607 SyntacticMatches, 0 SemanticMatches, 504 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127579 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=46948, Invalid=208582, Unknown=0, NotChecked=0, Total=255530 [2022-12-14 05:52:14,843 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 749 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:52:14,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 3 Invalid, 1700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 05:52:15,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542908 states. [2022-12-14 05:52:29,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542908 to 67523. [2022-12-14 05:52:29,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67523 states, 67522 states have (on average 1.1754094961642132) internal successors, (79366), 67522 states have internal predecessors, (79366), 0 states have call successors, (0), 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 05:52:30,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67523 states to 67523 states and 79366 transitions. [2022-12-14 05:52:30,007 INFO L78 Accepts]: Start accepts. Automaton has 67523 states and 79366 transitions. Word has length 546 [2022-12-14 05:52:30,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:52:30,008 INFO L495 AbstractCegarLoop]: Abstraction has 67523 states and 79366 transitions. [2022-12-14 05:52:30,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 5.2272727272727275) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 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 05:52:30,008 INFO L276 IsEmpty]: Start isEmpty. Operand 67523 states and 79366 transitions. [2022-12-14 05:52:30,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2022-12-14 05:52:30,038 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:52:30,038 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 108, 59, 58, 58, 58, 1, 1, 1] [2022-12-14 05:52:30,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-14 05:52:30,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:52:30,240 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:52:30,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:52:30,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1258271378, now seen corresponding path program 18 times [2022-12-14 05:52:30,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:52:30,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473272335] [2022-12-14 05:52:30,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:52:30,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:52:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:52:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 30650 backedges. 0 proven. 11316 refuted. 0 times theorem prover too weak. 19334 trivial. 0 not checked. [2022-12-14 05:52:30,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:52:30,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473272335] [2022-12-14 05:52:30,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473272335] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:52:30,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006136187] [2022-12-14 05:52:30,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:52:30,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:52:30,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:52:30,852 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:52:30,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 05:52:30,952 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:52:30,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:52:30,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 05:52:30,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:52:31,692 INFO L134 CoverageAnalysis]: Checked inductivity of 30650 backedges. 4762 proven. 4264 refuted. 0 times theorem prover too weak. 21624 trivial. 0 not checked. [2022-12-14 05:52:31,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:52:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 30650 backedges. 451 proven. 8575 refuted. 0 times theorem prover too weak. 21624 trivial. 0 not checked. [2022-12-14 05:52:32,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006136187] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:52:32,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1535215352] [2022-12-14 05:52:32,389 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:52:32,389 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:52:32,390 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:52:32,390 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:52:32,390 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:52:32,500 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:52:32,772 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1916389#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:52:32,772 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:52:32,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:52:32,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 61 [2022-12-14 05:52:32,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501162434] [2022-12-14 05:52:32,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:52:32,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-12-14 05:52:32,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:52:32,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-12-14 05:52:32,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=4001, Unknown=0, NotChecked=0, Total=4422 [2022-12-14 05:52:32,776 INFO L87 Difference]: Start difference. First operand 67523 states and 79366 transitions. Second operand has 61 states, 61 states have (on average 4.573770491803279) internal successors, (279), 61 states have internal predecessors, (279), 0 states have call successors, (0), 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 05:53:31,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:53:31,191 INFO L93 Difference]: Finished difference Result 211714 states and 251175 transitions. [2022-12-14 05:53:31,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 458 states. [2022-12-14 05:53:31,192 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.573770491803279) internal successors, (279), 61 states have internal predecessors, (279), 0 states have call successors, (0), 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 562 [2022-12-14 05:53:31,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:53:31,455 INFO L225 Difference]: With dead ends: 211714 [2022-12-14 05:53:31,456 INFO L226 Difference]: Without dead ends: 149395 [2022-12-14 05:53:31,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2163 GetRequests, 1639 SyntacticMatches, 3 SemanticMatches, 521 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115690 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=31181, Invalid=241825, Unknown=0, NotChecked=0, Total=273006 [2022-12-14 05:53:31,498 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 3204 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2838 mSolverCounterSat, 1218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3204 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 4056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1218 IncrementalHoareTripleChecker+Valid, 2838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:53:31,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3204 Valid, 1 Invalid, 4056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1218 Valid, 2838 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 05:53:31,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149395 states. [2022-12-14 05:53:59,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149395 to 135418. [2022-12-14 05:53:59,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135418 states, 135417 states have (on average 1.1634949821661977) internal successors, (157557), 135417 states have internal predecessors, (157557), 0 states have call successors, (0), 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 05:54:00,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135418 states to 135418 states and 157557 transitions. [2022-12-14 05:54:00,040 INFO L78 Accepts]: Start accepts. Automaton has 135418 states and 157557 transitions. Word has length 562 [2022-12-14 05:54:00,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:54:00,040 INFO L495 AbstractCegarLoop]: Abstraction has 135418 states and 157557 transitions. [2022-12-14 05:54:00,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.573770491803279) internal successors, (279), 61 states have internal predecessors, (279), 0 states have call successors, (0), 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 05:54:00,041 INFO L276 IsEmpty]: Start isEmpty. Operand 135418 states and 157557 transitions. [2022-12-14 05:54:00,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2022-12-14 05:54:00,103 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:54:00,103 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 113, 59, 58, 58, 58, 1, 1, 1] [2022-12-14 05:54:00,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-14 05:54:00,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-14 05:54:00,304 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:54:00,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:54:00,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2084784075, now seen corresponding path program 19 times [2022-12-14 05:54:00,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:54:00,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397955290] [2022-12-14 05:54:00,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:54:00,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:54:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:54:01,488 INFO L134 CoverageAnalysis]: Checked inductivity of 32605 backedges. 10851 proven. 14826 refuted. 0 times theorem prover too weak. 6928 trivial. 0 not checked. [2022-12-14 05:54:01,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:54:01,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397955290] [2022-12-14 05:54:01,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397955290] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:54:01,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259882531] [2022-12-14 05:54:01,488 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 05:54:01,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:54:01,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:54:01,489 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:54:01,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-14 05:54:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:54:01,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-14 05:54:01,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:54:02,393 INFO L134 CoverageAnalysis]: Checked inductivity of 32605 backedges. 17086 proven. 3346 refuted. 0 times theorem prover too weak. 12173 trivial. 0 not checked. [2022-12-14 05:54:02,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:54:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 32605 backedges. 17063 proven. 3369 refuted. 0 times theorem prover too weak. 12173 trivial. 0 not checked. [2022-12-14 05:54:02,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259882531] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:54:02,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1760130757] [2022-12-14 05:54:02,790 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:54:02,790 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:54:02,791 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:54:02,791 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:54:02,791 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:54:02,903 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:54:03,206 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2399145#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:54:03,206 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:54:03,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:54:03,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 35, 35] total 59 [2022-12-14 05:54:03,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483576900] [2022-12-14 05:54:03,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:54:03,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-12-14 05:54:03,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:54:03,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-12-14 05:54:03,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=3548, Unknown=0, NotChecked=0, Total=4160 [2022-12-14 05:54:03,208 INFO L87 Difference]: Start difference. First operand 135418 states and 157557 transitions. Second operand has 59 states, 59 states have (on average 5.4576271186440675) internal successors, (322), 59 states have internal predecessors, (322), 0 states have call successors, (0), 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 05:55:01,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:55:01,611 INFO L93 Difference]: Finished difference Result 143780 states and 167373 transitions. [2022-12-14 05:55:01,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1004 states. [2022-12-14 05:55:01,612 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 5.4576271186440675) internal successors, (322), 59 states have internal predecessors, (322), 0 states have call successors, (0), 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 577 [2022-12-14 05:55:01,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:55:01,761 INFO L225 Difference]: With dead ends: 143780 [2022-12-14 05:55:01,762 INFO L226 Difference]: Without dead ends: 137059 [2022-12-14 05:55:01,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2751 GetRequests, 1674 SyntacticMatches, 30 SemanticMatches, 1047 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518107 ImplicationChecksByTransitivity, 29.2s TimeCoverageRelationStatistics Valid=101299, Invalid=998053, Unknown=0, NotChecked=0, Total=1099352 [2022-12-14 05:55:01,828 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 544 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4586 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 4832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 4586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:55:01,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1 Invalid, 4832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 4586 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-14 05:55:01,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137059 states. [2022-12-14 05:55:27,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137059 to 135371. [2022-12-14 05:55:27,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135371 states, 135370 states have (on average 1.1618453128462731) internal successors, (157279), 135370 states have internal predecessors, (157279), 0 states have call successors, (0), 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 05:55:27,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135371 states to 135371 states and 157279 transitions. [2022-12-14 05:55:27,661 INFO L78 Accepts]: Start accepts. Automaton has 135371 states and 157279 transitions. Word has length 577 [2022-12-14 05:55:27,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:55:27,661 INFO L495 AbstractCegarLoop]: Abstraction has 135371 states and 157279 transitions. [2022-12-14 05:55:27,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 5.4576271186440675) internal successors, (322), 59 states have internal predecessors, (322), 0 states have call successors, (0), 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 05:55:27,662 INFO L276 IsEmpty]: Start isEmpty. Operand 135371 states and 157279 transitions. [2022-12-14 05:55:27,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2022-12-14 05:55:27,723 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:55:27,723 INFO L195 NwaCegarLoop]: trace histogram [115, 115, 114, 60, 59, 59, 59, 1, 1, 1] [2022-12-14 05:55:27,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-14 05:55:27,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-14 05:55:27,924 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-14 05:55:27,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:55:27,926 INFO L85 PathProgramCache]: Analyzing trace with hash -786490018, now seen corresponding path program 20 times [2022-12-14 05:55:27,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:55:27,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665187720] [2022-12-14 05:55:27,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:55:27,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:55:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:55:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 33353 backedges. 11226 proven. 15668 refuted. 0 times theorem prover too weak. 6459 trivial. 0 not checked. [2022-12-14 05:55:29,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:55:29,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665187720] [2022-12-14 05:55:29,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665187720] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:55:29,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541306795] [2022-12-14 05:55:29,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:55:29,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:55:29,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:55:29,093 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:55:29,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4760934-b34b-4d00-8302-4a7d393bddaf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-14 05:55:29,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 05:55:29,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:55:29,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 05:55:29,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:55:29,815 INFO L134 CoverageAnalysis]: Checked inductivity of 33353 backedges. 3239 proven. 225 refuted. 0 times theorem prover too weak. 29889 trivial. 0 not checked. [2022-12-14 05:55:29,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:55:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 33353 backedges. 228 proven. 3236 refuted. 0 times theorem prover too weak. 29889 trivial. 0 not checked. [2022-12-14 05:55:30,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541306795] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:55:30,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [467955889] [2022-12-14 05:55:30,651 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 05:55:30,651 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:55:30,651 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:55:30,651 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:55:30,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:55:30,761 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:55:31,073 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2790866#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-12-14 05:55:31,074 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:55:31,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:55:31,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 14, 14] total 63 [2022-12-14 05:55:31,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660100203] [2022-12-14 05:55:31,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:55:31,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-12-14 05:55:31,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:55:31,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-12-14 05:55:31,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=4268, Unknown=0, NotChecked=0, Total=4692 [2022-12-14 05:55:31,076 INFO L87 Difference]: Start difference. First operand 135371 states and 157279 transitions. Second operand has 63 states, 63 states have (on average 4.619047619047619) internal successors, (291), 63 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)