./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/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_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/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_b371f03e-4d08-4bba-ba2e-7ae77934f71b/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 096bafbba8d51323312e8aef69baa45c66c17c65b2ec8717873d6ff292690721 --- 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 04:48:54,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:48:54,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:48:54,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:48:54,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:48:54,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:48:54,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:48:54,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:48:54,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:48:54,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:48:54,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:48:54,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:48:54,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:48:54,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:48:54,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:48:54,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:48:54,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:48:54,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:48:54,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:48:54,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:48:54,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:48:54,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:48:54,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:48:54,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:48:54,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:48:54,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:48:54,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:48:54,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:48:54,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:48:54,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:48:54,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:48:54,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:48:54,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:48:54,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:48:54,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:48:54,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:48:54,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:48:54,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:48:54,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:48:54,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:48:54,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:48:54,667 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 04:48:54,689 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:48:54,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:48:54,689 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:48:54,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:48:54,690 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:48:54,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:48:54,691 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:48:54,691 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:48:54,691 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:48:54,691 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:48:54,691 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:48:54,692 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:48:54,692 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:48:54,692 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:48:54,692 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:48:54,692 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:48:54,693 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:48:54,693 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:48:54,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:48:54,694 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 04:48:54,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:48:54,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:48:54,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:48:54,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:48:54,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:48:54,695 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 04:48:54,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:48:54,695 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:48:54,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:48:54,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:48:54,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:48:54,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:48:54,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:48:54,696 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:48:54,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:48:54,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:48:54,697 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:48:54,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:48:54,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:48:54,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:48:54,698 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_b371f03e-4d08-4bba-ba2e-7ae77934f71b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 096bafbba8d51323312e8aef69baa45c66c17c65b2ec8717873d6ff292690721 [2022-12-14 04:48:54,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:48:54,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:48:54,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:48:54,897 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:48:54,897 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:48:54,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c [2022-12-14 04:48:57,459 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:48:57,618 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:48:57,619 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c [2022-12-14 04:48:57,625 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/data/d5953d9b5/8ca8d49cc62a407aa9c4b410d467494a/FLAG7c13ae54c [2022-12-14 04:48:58,030 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/data/d5953d9b5/8ca8d49cc62a407aa9c4b410d467494a [2022-12-14 04:48:58,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:48:58,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:48:58,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:48:58,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:48:58,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:48:58,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:48:58" (1/1) ... [2022-12-14 04:48:58,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68beebef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:58, skipping insertion in model container [2022-12-14 04:48:58,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:48:58" (1/1) ... [2022-12-14 04:48:58,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:48:58,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:48:58,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:48:58,171 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:48:58,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:48:58,192 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:48:58,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:58 WrapperNode [2022-12-14 04:48:58,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:48:58,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:48:58,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:48:58,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:48:58,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:58" (1/1) ... [2022-12-14 04:48:58,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:58" (1/1) ... [2022-12-14 04:48:58,214 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2022-12-14 04:48:58,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:48:58,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:48:58,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:48:58,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:48:58,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:58" (1/1) ... [2022-12-14 04:48:58,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:58" (1/1) ... [2022-12-14 04:48:58,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:58" (1/1) ... [2022-12-14 04:48:58,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:58" (1/1) ... [2022-12-14 04:48:58,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:58" (1/1) ... [2022-12-14 04:48:58,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:58" (1/1) ... [2022-12-14 04:48:58,230 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:58" (1/1) ... [2022-12-14 04:48:58,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:58" (1/1) ... [2022-12-14 04:48:58,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:48:58,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:48:58,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:48:58,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:48:58,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:58" (1/1) ... [2022-12-14 04:48:58,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:48:58,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:48:58,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:48:58,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:48:58,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:48:58,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:48:58,357 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:48:58,358 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:48:58,445 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:48:58,467 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:48:58,468 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 04:48:58,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:48:58 BoogieIcfgContainer [2022-12-14 04:48:58,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:48:58,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:48:58,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:48:58,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:48:58,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:48:58" (1/3) ... [2022-12-14 04:48:58,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d4a635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:48:58, skipping insertion in model container [2022-12-14 04:48:58,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:48:58" (2/3) ... [2022-12-14 04:48:58,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d4a635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:48:58, skipping insertion in model container [2022-12-14 04:48:58,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:48:58" (3/3) ... [2022-12-14 04:48:58,480 INFO L112 eAbstractionObserver]: Analyzing ICFG MinusUserDefined.c [2022-12-14 04:48:58,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:48:58,501 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-14 04:48:58,551 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:48:58,558 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;@3564cdd0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:48:58,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-14 04:48:58,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.9375) internal successors, (31), 28 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 04:48:58,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 04:48:58,571 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:58,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 04:48:58,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 04:48:58,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:58,578 INFO L85 PathProgramCache]: Analyzing trace with hash 94531, now seen corresponding path program 1 times [2022-12-14 04:48:58,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:58,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162636100] [2022-12-14 04:48:58,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:58,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:58,706 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 04:48:58,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:58,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162636100] [2022-12-14 04:48:58,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162636100] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:58,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:58,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:48:58,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626899642] [2022-12-14 04:48:58,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:58,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:48:58,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:58,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:48:58,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:58,739 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.9375) internal successors, (31), 28 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:58,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:58,780 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-12-14 04:48:58,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:48:58,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 04:48:58,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:58,788 INFO L225 Difference]: With dead ends: 32 [2022-12-14 04:48:58,788 INFO L226 Difference]: Without dead ends: 28 [2022-12-14 04:48:58,791 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 04:48:58,793 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 14 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:58,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 26 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:48:58,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-14 04:48:58,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2022-12-14 04:48:58,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.75) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:58,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-12-14 04:48:58,818 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 3 [2022-12-14 04:48:58,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:58,818 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-12-14 04:48:58,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:58,818 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-12-14 04:48:58,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 04:48:58,819 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:58,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 04:48:58,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 04:48:58,819 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 04:48:58,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:58,821 INFO L85 PathProgramCache]: Analyzing trace with hash 2988710, now seen corresponding path program 1 times [2022-12-14 04:48:58,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:58,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907805356] [2022-12-14 04:48:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:58,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:58,845 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 04:48:58,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:58,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907805356] [2022-12-14 04:48:58,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907805356] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:58,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:58,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 04:48:58,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347405353] [2022-12-14 04:48:58,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:58,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:48:58,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:58,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:48:58,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:58,848 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:58,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:58,884 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-12-14 04:48:58,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:48:58,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 04:48:58,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:58,885 INFO L225 Difference]: With dead ends: 36 [2022-12-14 04:48:58,885 INFO L226 Difference]: Without dead ends: 35 [2022-12-14 04:48:58,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:58,886 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:58,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 17 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:48:58,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-14 04:48:58,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-12-14 04:48:58,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-12-14 04:48:58,892 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 4 [2022-12-14 04:48:58,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:58,892 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-12-14 04:48:58,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:58,892 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-12-14 04:48:58,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 04:48:58,893 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:58,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 04:48:58,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 04:48:58,893 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 04:48:58,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:58,894 INFO L85 PathProgramCache]: Analyzing trace with hash 2930506, now seen corresponding path program 1 times [2022-12-14 04:48:58,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:58,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801447164] [2022-12-14 04:48:58,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:58,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:58,915 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 04:48:58,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:58,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801447164] [2022-12-14 04:48:58,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801447164] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:58,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:58,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 04:48:58,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979678723] [2022-12-14 04:48:58,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:58,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:48:58,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:58,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:48:58,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:58,917 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:58,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:58,938 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2022-12-14 04:48:58,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:48:58,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 04:48:58,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:58,939 INFO L225 Difference]: With dead ends: 33 [2022-12-14 04:48:58,940 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 04:48:58,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:58,941 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:58,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 16 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:48:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 04:48:58,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-12-14 04:48:58,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 30 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 04:48:58,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-12-14 04:48:58,948 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 4 [2022-12-14 04:48:58,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:58,948 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-12-14 04:48:58,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:58,949 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2022-12-14 04:48:58,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 04:48:58,949 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:58,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 04:48:58,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 04:48:58,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 04:48:58,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:58,950 INFO L85 PathProgramCache]: Analyzing trace with hash 92650074, now seen corresponding path program 1 times [2022-12-14 04:48:58,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:58,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287565052] [2022-12-14 04:48:58,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:58,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:58,989 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 04:48:58,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:58,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287565052] [2022-12-14 04:48:58,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287565052] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:58,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:58,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:48:58,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976190094] [2022-12-14 04:48:58,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:58,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:48:58,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:58,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:48:58,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:48:58,992 INFO L87 Difference]: Start difference. First operand 31 states and 38 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 04:48:59,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:59,025 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2022-12-14 04:48:59,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:48:59,026 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 04:48:59,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:59,026 INFO L225 Difference]: With dead ends: 31 [2022-12-14 04:48:59,027 INFO L226 Difference]: Without dead ends: 30 [2022-12-14 04:48:59,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:48:59,028 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:59,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:48:59,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-14 04:48:59,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-12-14 04:48:59,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.565217391304348) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:59,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-12-14 04:48:59,035 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 5 [2022-12-14 04:48:59,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:59,035 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-12-14 04:48:59,035 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 04:48:59,035 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-12-14 04:48:59,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 04:48:59,036 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:59,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 04:48:59,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 04:48:59,055 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 04:48:59,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:59,056 INFO L85 PathProgramCache]: Analyzing trace with hash 90845733, now seen corresponding path program 1 times [2022-12-14 04:48:59,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:59,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026485297] [2022-12-14 04:48:59,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:59,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:59,084 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 04:48:59,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:59,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026485297] [2022-12-14 04:48:59,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026485297] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:59,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:59,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:48:59,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986611430] [2022-12-14 04:48:59,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:59,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:48:59,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:59,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:48:59,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:59,086 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:59,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:59,107 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-12-14 04:48:59,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:48:59,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 04:48:59,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:59,108 INFO L225 Difference]: With dead ends: 30 [2022-12-14 04:48:59,108 INFO L226 Difference]: Without dead ends: 28 [2022-12-14 04:48:59,108 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 04:48:59,109 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:59,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 19 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:48:59,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-14 04:48:59,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-12-14 04:48:59,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-12-14 04:48:59,114 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 5 [2022-12-14 04:48:59,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:59,115 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-12-14 04:48:59,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:59,115 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-12-14 04:48:59,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 04:48:59,115 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:59,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 04:48:59,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 04:48:59,116 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 04:48:59,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:59,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1422814936, now seen corresponding path program 1 times [2022-12-14 04:48:59,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:59,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209025970] [2022-12-14 04:48:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:59,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:59,143 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 04:48:59,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:59,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209025970] [2022-12-14 04:48:59,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209025970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:59,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:59,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 04:48:59,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363524998] [2022-12-14 04:48:59,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:59,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:48:59,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:59,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:48:59,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:59,146 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:59,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:59,158 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2022-12-14 04:48:59,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:48:59,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 04:48:59,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:59,159 INFO L225 Difference]: With dead ends: 28 [2022-12-14 04:48:59,159 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 04:48:59,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:59,161 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:59,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 16 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:48:59,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 04:48:59,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-12-14 04:48:59,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.391304347826087) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:59,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-12-14 04:48:59,167 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 6 [2022-12-14 04:48:59,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:59,167 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-12-14 04:48:59,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:59,167 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-12-14 04:48:59,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 04:48:59,168 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:59,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 04:48:59,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 04:48:59,168 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 04:48:59,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:59,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1478749524, now seen corresponding path program 1 times [2022-12-14 04:48:59,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:59,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846540291] [2022-12-14 04:48:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:59,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:59,193 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 04:48:59,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:59,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846540291] [2022-12-14 04:48:59,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846540291] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:59,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:59,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 04:48:59,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649399093] [2022-12-14 04:48:59,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:59,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:48:59,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:59,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:48:59,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:59,195 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:59,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:59,214 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-12-14 04:48:59,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:48:59,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 04:48:59,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:59,215 INFO L225 Difference]: With dead ends: 27 [2022-12-14 04:48:59,215 INFO L226 Difference]: Without dead ends: 25 [2022-12-14 04:48:59,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:59,217 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:59,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:48:59,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-14 04:48:59,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-12-14 04:48:59,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:59,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-12-14 04:48:59,222 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 6 [2022-12-14 04:48:59,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:59,222 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-12-14 04:48:59,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:59,223 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-12-14 04:48:59,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 04:48:59,223 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:59,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:48:59,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 04:48:59,223 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 04:48:59,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:59,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1157589988, now seen corresponding path program 1 times [2022-12-14 04:48:59,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:59,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456364077] [2022-12-14 04:48:59,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:59,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:59,249 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 04:48:59,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:59,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456364077] [2022-12-14 04:48:59,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456364077] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:59,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:59,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 04:48:59,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775558377] [2022-12-14 04:48:59,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:59,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 04:48:59,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:59,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 04:48:59,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:59,251 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:59,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:59,265 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-12-14 04:48:59,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 04:48:59,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 04:48:59,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:59,266 INFO L225 Difference]: With dead ends: 37 [2022-12-14 04:48:59,266 INFO L226 Difference]: Without dead ends: 36 [2022-12-14 04:48:59,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 04:48:59,267 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:59,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:48:59,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-14 04:48:59,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-12-14 04:48:59,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 04:48:59,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-12-14 04:48:59,274 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 7 [2022-12-14 04:48:59,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:59,274 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-12-14 04:48:59,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:59,275 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-12-14 04:48:59,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 04:48:59,275 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:59,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 04:48:59,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 04:48:59,276 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 04:48:59,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:59,276 INFO L85 PathProgramCache]: Analyzing trace with hash 52584571, now seen corresponding path program 1 times [2022-12-14 04:48:59,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:59,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672376617] [2022-12-14 04:48:59,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:59,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:48:59,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:59,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672376617] [2022-12-14 04:48:59,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672376617] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:48:59,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:48:59,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 04:48:59,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741755209] [2022-12-14 04:48:59,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:48:59,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 04:48:59,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:59,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 04:48:59,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:48:59,314 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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 04:48:59,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:59,344 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2022-12-14 04:48:59,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 04:48:59,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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 04:48:59,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:59,345 INFO L225 Difference]: With dead ends: 40 [2022-12-14 04:48:59,345 INFO L226 Difference]: Without dead ends: 39 [2022-12-14 04:48:59,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 04:48:59,346 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 17 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:59,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 22 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:48:59,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-14 04:48:59,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 22. [2022-12-14 04:48:59,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 04:48:59,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-12-14 04:48:59,351 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2022-12-14 04:48:59,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:59,351 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-12-14 04:48:59,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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 04:48:59,352 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-12-14 04:48:59,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 04:48:59,352 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:59,352 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 04:48:59,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 04:48:59,352 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 04:48:59,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:48:59,353 INFO L85 PathProgramCache]: Analyzing trace with hash 266930230, now seen corresponding path program 1 times [2022-12-14 04:48:59,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:48:59,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91319667] [2022-12-14 04:48:59,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:59,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:48:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:48:59,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:48:59,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91319667] [2022-12-14 04:48:59,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91319667] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:48:59,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506303661] [2022-12-14 04:48:59,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:48:59,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:48:59,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:48:59,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:48:59,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 04:48:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:48:59,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 04:48:59,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:48:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:48:59,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:48:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:48:59,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506303661] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:48:59,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [812041641] [2022-12-14 04:48:59,516 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 04:48:59,516 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:48:59,519 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:48:59,524 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:48:59,525 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:48:59,639 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:48:59,779 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '800#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 1) (< 2147483646 |ULTIMATE.start_main_~res~0#1|))' at error location [2022-12-14 04:48:59,779 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:48:59,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:48:59,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-14 04:48:59,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227843672] [2022-12-14 04:48:59,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 04:48:59,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 04:48:59,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:48:59,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 04:48:59,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:48:59,781 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:59,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:48:59,810 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2022-12-14 04:48:59,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 04:48:59,810 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 04:48:59,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:48:59,810 INFO L225 Difference]: With dead ends: 53 [2022-12-14 04:48:59,811 INFO L226 Difference]: Without dead ends: 52 [2022-12-14 04:48:59,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-12-14 04:48:59,812 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:48:59,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 46 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:48:59,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-12-14 04:48:59,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-12-14 04:48:59,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 04:48:59,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2022-12-14 04:48:59,819 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 13 [2022-12-14 04:48:59,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:48:59,820 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2022-12-14 04:48:59,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:48:59,820 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2022-12-14 04:48:59,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 04:48:59,821 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:48:59,821 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1] [2022-12-14 04:48:59,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 04:49:00,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 04:49:00,022 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 04:49:00,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:00,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1665728636, now seen corresponding path program 2 times [2022-12-14 04:49:00,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:00,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580326322] [2022-12-14 04:49:00,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:00,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:49:00,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:00,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580326322] [2022-12-14 04:49:00,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580326322] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:49:00,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52029886] [2022-12-14 04:49:00,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 04:49:00,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:49:00,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:49:00,102 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:49:00,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 04:49:00,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 04:49:00,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:49:00,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 04:49:00,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:49:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:49:00,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:49:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:49:00,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52029886] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:49:00,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [355686240] [2022-12-14 04:49:00,254 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 04:49:00,254 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:49:00,254 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:49:00,254 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:49:00,255 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:49:00,313 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:49:00,488 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1123#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 1) (< 2147483646 |ULTIMATE.start_main_~res~0#1|))' at error location [2022-12-14 04:49:00,488 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:49:00,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:49:00,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-14 04:49:00,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864855552] [2022-12-14 04:49:00,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 04:49:00,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 04:49:00,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:49:00,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 04:49:00,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2022-12-14 04:49:00,490 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 04:49:00,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:00,544 INFO L93 Difference]: Finished difference Result 113 states and 129 transitions. [2022-12-14 04:49:00,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 04:49:00,544 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-12-14 04:49:00,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:00,546 INFO L225 Difference]: With dead ends: 113 [2022-12-14 04:49:00,546 INFO L226 Difference]: Without dead ends: 112 [2022-12-14 04:49:00,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 75 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2022-12-14 04:49:00,547 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 106 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:00,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 94 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 04:49:00,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-12-14 04:49:00,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-12-14 04:49:00,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.1081081081081081) internal successors, (123), 111 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 04:49:00,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2022-12-14 04:49:00,560 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 31 [2022-12-14 04:49:00,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:00,561 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2022-12-14 04:49:00,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 04:49:00,561 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2022-12-14 04:49:00,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 04:49:00,563 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:00,563 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1] [2022-12-14 04:49:00,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 04:49:00,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 04:49:00,765 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 04:49:00,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:00,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1392502688, now seen corresponding path program 3 times [2022-12-14 04:49:00,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:00,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671365449] [2022-12-14 04:49:00,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:00,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:49:01,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:01,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671365449] [2022-12-14 04:49:01,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671365449] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:49:01,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028061346] [2022-12-14 04:49:01,083 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 04:49:01,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:49:01,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:49:01,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:49:01,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 04:49:01,120 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 04:49:01,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:49:01,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 04:49:01,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:49:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:49:01,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:49:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:49:01,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028061346] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:49:01,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [273648240] [2022-12-14 04:49:01,394 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 04:49:01,394 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:49:01,394 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:49:01,395 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:49:01,395 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:49:01,458 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:49:01,756 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1818#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 1) (< 2147483646 |ULTIMATE.start_main_~res~0#1|))' at error location [2022-12-14 04:49:01,756 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:49:01,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:49:01,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-12-14 04:49:01,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057743596] [2022-12-14 04:49:01,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 04:49:01,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 04:49:01,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:49:01,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 04:49:01,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=555, Unknown=0, NotChecked=0, Total=870 [2022-12-14 04:49:01,759 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 23 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 04:49:01,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:01,889 INFO L93 Difference]: Finished difference Result 233 states and 267 transitions. [2022-12-14 04:49:01,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 04:49:01,889 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 23 states have internal predecessors, (134), 0 states have call successors, (0), 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 04:49:01,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:01,891 INFO L225 Difference]: With dead ends: 233 [2022-12-14 04:49:01,891 INFO L226 Difference]: Without dead ends: 232 [2022-12-14 04:49:01,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 171 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=315, Invalid=555, Unknown=0, NotChecked=0, Total=870 [2022-12-14 04:49:01,893 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 356 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:01,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 190 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:49:01,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-12-14 04:49:01,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2022-12-14 04:49:01,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.103896103896104) internal successors, (255), 231 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:49:01,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 255 transitions. [2022-12-14 04:49:01,904 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 255 transitions. Word has length 67 [2022-12-14 04:49:01,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:01,904 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 255 transitions. [2022-12-14 04:49:01,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 23 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 04:49:01,905 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 255 transitions. [2022-12-14 04:49:01,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-12-14 04:49:01,906 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:01,906 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 1, 1, 1] [2022-12-14 04:49:01,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 04:49:02,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:49:02,108 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 04:49:02,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:02,109 INFO L85 PathProgramCache]: Analyzing trace with hash 4070872, now seen corresponding path program 4 times [2022-12-14 04:49:02,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:02,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186817425] [2022-12-14 04:49:02,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:02,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:49:02,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:02,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186817425] [2022-12-14 04:49:02,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186817425] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:49:02,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977651306] [2022-12-14 04:49:02,775 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 04:49:02,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:49:02,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:49:02,776 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:49:02,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 04:49:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:02,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 04:49:02,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:49:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:49:02,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:49:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:49:03,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977651306] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:49:03,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1137188081] [2022-12-14 04:49:03,520 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 04:49:03,520 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:49:03,520 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:49:03,521 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:49:03,521 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:49:03,572 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:49:04,207 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3257#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 1) (< 2147483646 |ULTIMATE.start_main_~res~0#1|))' at error location [2022-12-14 04:49:04,207 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:49:04,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:49:04,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-12-14 04:49:04,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544903467] [2022-12-14 04:49:04,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 04:49:04,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 04:49:04,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:49:04,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 04:49:04,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1191, Invalid=1671, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 04:49:04,210 INFO L87 Difference]: Start difference. First operand 232 states and 255 transitions. Second operand has 48 states, 47 states have (on average 5.914893617021277) internal successors, (278), 47 states have internal predecessors, (278), 0 states have call successors, (0), 0 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 04:49:04,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:04,654 INFO L93 Difference]: Finished difference Result 473 states and 543 transitions. [2022-12-14 04:49:04,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 04:49:04,655 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.914893617021277) internal successors, (278), 47 states have internal predecessors, (278), 0 states have call successors, (0), 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 139 [2022-12-14 04:49:04,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:04,658 INFO L225 Difference]: With dead ends: 473 [2022-12-14 04:49:04,658 INFO L226 Difference]: Without dead ends: 472 [2022-12-14 04:49:04,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 363 SyntacticMatches, 23 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2043 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1191, Invalid=1671, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 04:49:04,659 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 656 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:04,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 382 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:49:04,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-12-14 04:49:04,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2022-12-14 04:49:04,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 1.1019108280254777) internal successors, (519), 471 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 04:49:04,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 519 transitions. [2022-12-14 04:49:04,675 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 519 transitions. Word has length 139 [2022-12-14 04:49:04,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:04,675 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 519 transitions. [2022-12-14 04:49:04,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.914893617021277) internal successors, (278), 47 states have internal predecessors, (278), 0 states have call successors, (0), 0 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 04:49:04,675 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 519 transitions. [2022-12-14 04:49:04,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-12-14 04:49:04,679 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:04,679 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 1, 1, 1] [2022-12-14 04:49:04,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 04:49:04,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 04:49:04,880 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 04:49:04,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:04,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2003837512, now seen corresponding path program 5 times [2022-12-14 04:49:04,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:04,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530582178] [2022-12-14 04:49:04,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:04,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:49:06,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:06,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530582178] [2022-12-14 04:49:06,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530582178] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:49:06,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053694008] [2022-12-14 04:49:06,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 04:49:06,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:49:06,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:49:06,581 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:49:06,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 04:49:06,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-12-14 04:49:06,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:49:06,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 04:49:06,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:49:06,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:49:06,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:49:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:49:08,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053694008] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:49:08,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [171853729] [2022-12-14 04:49:08,777 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 04:49:08,777 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:49:08,777 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:49:08,777 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:49:08,777 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:49:08,823 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:49:10,447 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6184#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 1) (< 2147483646 |ULTIMATE.start_main_~res~0#1|))' at error location [2022-12-14 04:49:10,447 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:49:10,447 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:49:10,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-12-14 04:49:10,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402030795] [2022-12-14 04:49:10,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 04:49:10,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-12-14 04:49:10,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:49:10,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-12-14 04:49:10,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4671, Invalid=5631, Unknown=0, NotChecked=0, Total=10302 [2022-12-14 04:49:10,457 INFO L87 Difference]: Start difference. First operand 472 states and 519 transitions. Second operand has 96 states, 95 states have (on average 5.957894736842105) internal successors, (566), 95 states have internal predecessors, (566), 0 states have call successors, (0), 0 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 04:49:11,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:11,990 INFO L93 Difference]: Finished difference Result 953 states and 1095 transitions. [2022-12-14 04:49:11,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-14 04:49:11,990 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.957894736842105) internal successors, (566), 95 states have internal predecessors, (566), 0 states have call successors, (0), 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 283 [2022-12-14 04:49:11,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:11,996 INFO L225 Difference]: With dead ends: 953 [2022-12-14 04:49:11,996 INFO L226 Difference]: Without dead ends: 952 [2022-12-14 04:49:11,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 747 SyntacticMatches, 47 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7563 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=4671, Invalid=5631, Unknown=0, NotChecked=0, Total=10302 [2022-12-14 04:49:11,999 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1901 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:11,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1901 Valid, 766 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 04:49:12,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-12-14 04:49:12,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 952. [2022-12-14 04:49:12,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 951 states have (on average 1.1009463722397477) internal successors, (1047), 951 states have internal predecessors, (1047), 0 states have call successors, (0), 0 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 04:49:12,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1047 transitions. [2022-12-14 04:49:12,024 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1047 transitions. Word has length 283 [2022-12-14 04:49:12,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:12,025 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 1047 transitions. [2022-12-14 04:49:12,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.957894736842105) internal successors, (566), 95 states have internal predecessors, (566), 0 states have call successors, (0), 0 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 04:49:12,025 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1047 transitions. [2022-12-14 04:49:12,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2022-12-14 04:49:12,032 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:12,032 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 94, 94, 1, 1, 1] [2022-12-14 04:49:12,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 04:49:12,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 04:49:12,234 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 04:49:12,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:12,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1288342312, now seen corresponding path program 6 times [2022-12-14 04:49:12,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:12,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063777768] [2022-12-14 04:49:12,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:12,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:49:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:49:16,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:49:16,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063777768] [2022-12-14 04:49:16,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063777768] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:49:16,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627872636] [2022-12-14 04:49:16,992 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 04:49:16,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:49:16,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:49:16,993 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:49:16,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 04:49:17,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 04:49:17,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:49:17,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-14 04:49:17,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:49:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:49:17,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:49:24,744 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:49:24,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627872636] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:49:24,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [893624694] [2022-12-14 04:49:24,746 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 04:49:24,746 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:49:24,746 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:49:24,746 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:49:24,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:49:24,782 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:49:31,617 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12087#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 1) (< 2147483646 |ULTIMATE.start_main_~res~0#1|))' at error location [2022-12-14 04:49:31,617 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:49:31,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:49:31,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-12-14 04:49:31,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108179621] [2022-12-14 04:49:31,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 04:49:31,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-12-14 04:49:31,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:49:31,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-12-14 04:49:31,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18543, Invalid=20463, Unknown=0, NotChecked=0, Total=39006 [2022-12-14 04:49:31,627 INFO L87 Difference]: Start difference. First operand 952 states and 1047 transitions. Second operand has 192 states, 191 states have (on average 5.979057591623037) internal successors, (1142), 191 states have internal predecessors, (1142), 0 states have call successors, (0), 0 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 04:49:47,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:49:47,612 INFO L93 Difference]: Finished difference Result 1913 states and 2199 transitions. [2022-12-14 04:49:47,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-12-14 04:49:47,612 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 5.979057591623037) internal successors, (1142), 191 states have internal predecessors, (1142), 0 states have call successors, (0), 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 571 [2022-12-14 04:49:47,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:49:47,616 INFO L225 Difference]: With dead ends: 1913 [2022-12-14 04:49:47,616 INFO L226 Difference]: Without dead ends: 1912 [2022-12-14 04:49:47,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1806 GetRequests, 1515 SyntacticMatches, 95 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28971 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=18543, Invalid=20463, Unknown=0, NotChecked=0, Total=39006 [2022-12-14 04:49:47,619 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 4451 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4451 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 04:49:47,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4451 Valid, 1534 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 04:49:47,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2022-12-14 04:49:47,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1912. [2022-12-14 04:49:47,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 1.1004709576138147) internal successors, (2103), 1911 states have internal predecessors, (2103), 0 states have call successors, (0), 0 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 04:49:47,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 2103 transitions. [2022-12-14 04:49:47,666 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 2103 transitions. Word has length 571 [2022-12-14 04:49:47,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:49:47,666 INFO L495 AbstractCegarLoop]: Abstraction has 1912 states and 2103 transitions. [2022-12-14 04:49:47,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 5.979057591623037) internal successors, (1142), 191 states have internal predecessors, (1142), 0 states have call successors, (0), 0 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 04:49:47,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 2103 transitions. [2022-12-14 04:49:47,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1148 [2022-12-14 04:49:47,693 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:49:47,693 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 191, 190, 190, 1, 1, 1] [2022-12-14 04:49:47,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 04:49:47,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 04:49:47,895 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 04:49:47,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:49:47,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1951980776, now seen corresponding path program 7 times [2022-12-14 04:49:47,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:49:47,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595023476] [2022-12-14 04:49:47,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:49:47,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:49:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:50:11,201 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:50:11,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:50:11,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595023476] [2022-12-14 04:50:11,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595023476] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:50:11,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025930939] [2022-12-14 04:50:11,202 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 04:50:11,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:50:11,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:50:11,203 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:50:11,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 04:50:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:50:11,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 192 conjunts are in the unsatisfiable core [2022-12-14 04:50:11,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:50:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:50:12,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:50:39,362 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:50:39,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025930939] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:50:39,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2071986649] [2022-12-14 04:50:39,364 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 04:50:39,364 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:50:39,364 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:50:39,364 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:50:39,364 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:50:39,396 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 04:51:00,488 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '23942#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 1) (< 2147483646 |ULTIMATE.start_main_~res~0#1|))' at error location [2022-12-14 04:51:00,488 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 04:51:00,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 04:51:00,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-12-14 04:51:00,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362258254] [2022-12-14 04:51:00,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 04:51:00,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-12-14 04:51:00,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:51:00,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-12-14 04:51:00,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73935, Invalid=77775, Unknown=0, NotChecked=0, Total=151710 [2022-12-14 04:51:00,511 INFO L87 Difference]: Start difference. First operand 1912 states and 2103 transitions. Second operand has 384 states, 383 states have (on average 5.989556135770235) internal successors, (2294), 383 states have internal predecessors, (2294), 0 states have call successors, (0), 0 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 04:54:31,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:54:31,999 INFO L93 Difference]: Finished difference Result 3833 states and 4407 transitions. [2022-12-14 04:54:32,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-12-14 04:54:32,002 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 5.989556135770235) internal successors, (2294), 383 states have internal predecessors, (2294), 0 states have call successors, (0), 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 1147 [2022-12-14 04:54:32,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:54:32,008 INFO L225 Difference]: With dead ends: 3833 [2022-12-14 04:54:32,008 INFO L226 Difference]: Without dead ends: 3832 [2022-12-14 04:54:32,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3630 GetRequests, 3051 SyntacticMatches, 191 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113259 ImplicationChecksByTransitivity, 56.2s TimeCoverageRelationStatistics Valid=73935, Invalid=77775, Unknown=0, NotChecked=0, Total=151710 [2022-12-14 04:54:32,015 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10546 mSDsluCounter, 3056 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10546 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 04:54:32,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10546 Valid, 3070 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 04:54:32,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2022-12-14 04:54:32,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 3832. [2022-12-14 04:54:32,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3832 states, 3831 states have (on average 1.100234925606891) internal successors, (4215), 3831 states have internal predecessors, (4215), 0 states have call successors, (0), 0 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 04:54:32,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3832 states to 3832 states and 4215 transitions. [2022-12-14 04:54:32,107 INFO L78 Accepts]: Start accepts. Automaton has 3832 states and 4215 transitions. Word has length 1147 [2022-12-14 04:54:32,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:54:32,108 INFO L495 AbstractCegarLoop]: Abstraction has 3832 states and 4215 transitions. [2022-12-14 04:54:32,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 5.989556135770235) internal successors, (2294), 383 states have internal predecessors, (2294), 0 states have call successors, (0), 0 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 04:54:32,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3832 states and 4215 transitions. [2022-12-14 04:54:32,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2300 [2022-12-14 04:54:32,133 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:54:32,133 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 383, 383, 382, 382, 1, 1, 1] [2022-12-14 04:54:32,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 04:54:32,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 04:54:32,334 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-12-14 04:54:32,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:54:32,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1092911000, now seen corresponding path program 8 times [2022-12-14 04:54:32,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:54:32,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742111683] [2022-12-14 04:54:32,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:54:32,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:54:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:56:43,869 INFO L134 CoverageAnalysis]: Checked inductivity of 438536 backedges. 0 proven. 438536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:56:43,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:56:43,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742111683] [2022-12-14 04:56:43,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742111683] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:56:43,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048081471] [2022-12-14 04:56:43,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 04:56:43,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:56:43,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:56:43,871 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:56:43,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b371f03e-4d08-4bba-ba2e-7ae77934f71b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 04:56:47,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-12-14 04:56:47,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 04:56:48,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 3836 conjuncts, 384 conjunts are in the unsatisfiable core [2022-12-14 04:56:48,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:56:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 438536 backedges. 0 proven. 438536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:56:49,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:58:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 438536 backedges. 0 proven. 438536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 04:58:40,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048081471] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 04:58:40,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1299379143] [2022-12-14 04:58:40,789 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 04:58:40,789 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 04:58:40,789 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 04:58:40,789 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 04:58:40,789 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 04:58:40,827 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:00:08,071 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '47701#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~y~0#1| 1) (< 2147483646 |ULTIMATE.start_main_~res~0#1|))' at error location [2022-12-14 05:00:08,071 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:00:08,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:00:08,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 766 [2022-12-14 05:00:08,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624494127] [2022-12-14 05:00:08,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:00:08,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2022-12-14 05:00:08,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:00:08,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2022-12-14 05:00:08,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295311, Invalid=302991, Unknown=0, NotChecked=0, Total=598302 [2022-12-14 05:00:08,150 INFO L87 Difference]: Start difference. First operand 3832 states and 4215 transitions. Second operand has 768 states, 767 states have (on average 5.994784876140808) internal successors, (4598), 767 states have internal predecessors, (4598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)