./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/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_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/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_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/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 30e0974778487c3ac56035f1f8ab25ce73456d36b8987ec761ccfaf99f917331 --- 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 13:37:15,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:37:15,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:37:15,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:37:15,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:37:15,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:37:15,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:37:15,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:37:15,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:37:15,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:37:15,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:37:15,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:37:15,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:37:15,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:37:15,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:37:15,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:37:15,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:37:15,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:37:15,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:37:15,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:37:15,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:37:15,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:37:15,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:37:15,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:37:15,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:37:15,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:37:15,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:37:15,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:37:15,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:37:15,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:37:15,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:37:15,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:37:15,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:37:15,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:37:15,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:37:15,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:37:15,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:37:15,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:37:15,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:37:15,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:37:15,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:37:15,817 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 13:37:15,833 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:37:15,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:37:15,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:37:15,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:37:15,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:37:15,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:37:15,835 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:37:15,835 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:37:15,835 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:37:15,835 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:37:15,835 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:37:15,835 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:37:15,835 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:37:15,836 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:37:15,836 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:37:15,836 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:37:15,836 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:37:15,836 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:37:15,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:37:15,837 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 13:37:15,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:37:15,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:37:15,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:37:15,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:37:15,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:37:15,837 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 13:37:15,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:37:15,838 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:37:15,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:37:15,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:37:15,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:37:15,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:37:15,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:37:15,838 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:37:15,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:37:15,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:37:15,839 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:37:15,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:37:15,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:37:15,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:37:15,839 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_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30e0974778487c3ac56035f1f8ab25ce73456d36b8987ec761ccfaf99f917331 [2022-12-14 13:37:16,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:37:16,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:37:16,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:37:16,070 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:37:16,070 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:37:16,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2022-12-14 13:37:18,691 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:37:18,812 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:37:18,812 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2022-12-14 13:37:18,816 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/data/7ca6b2bc8/7966658e433747cb848e70f7b73e9cc0/FLAG876a10df5 [2022-12-14 13:37:18,826 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/data/7ca6b2bc8/7966658e433747cb848e70f7b73e9cc0 [2022-12-14 13:37:18,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:37:18,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:37:18,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:37:18,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:37:18,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:37:18,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:37:18" (1/1) ... [2022-12-14 13:37:18,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b12e3f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:37:18, skipping insertion in model container [2022-12-14 13:37:18,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:37:18" (1/1) ... [2022-12-14 13:37:18,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:37:18,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:37:18,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:37:18,993 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:37:19,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:37:19,020 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:37:19,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:37:19 WrapperNode [2022-12-14 13:37:19,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:37:19,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:37:19,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:37:19,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:37:19,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:37:19" (1/1) ... [2022-12-14 13:37:19,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:37:19" (1/1) ... [2022-12-14 13:37:19,050 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2022-12-14 13:37:19,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:37:19,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:37:19,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:37:19,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:37:19,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:37:19" (1/1) ... [2022-12-14 13:37:19,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:37:19" (1/1) ... [2022-12-14 13:37:19,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:37:19" (1/1) ... [2022-12-14 13:37:19,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:37:19" (1/1) ... [2022-12-14 13:37:19,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:37:19" (1/1) ... [2022-12-14 13:37:19,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:37:19" (1/1) ... [2022-12-14 13:37:19,068 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:37:19" (1/1) ... [2022-12-14 13:37:19,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:37:19" (1/1) ... [2022-12-14 13:37:19,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:37:19,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:37:19,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:37:19,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:37:19,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:37:19" (1/1) ... [2022-12-14 13:37:19,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:37:19,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:37:19,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:37:19,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:37:19,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:37:19,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:37:19,198 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:37:19,200 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:37:19,282 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:37:19,307 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:37:19,307 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 13:37:19,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:37:19 BoogieIcfgContainer [2022-12-14 13:37:19,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:37:19,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:37:19,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:37:19,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:37:19,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:37:18" (1/3) ... [2022-12-14 13:37:19,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2297ff04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:37:19, skipping insertion in model container [2022-12-14 13:37:19,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:37:19" (2/3) ... [2022-12-14 13:37:19,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2297ff04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:37:19, skipping insertion in model container [2022-12-14 13:37:19,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:37:19" (3/3) ... [2022-12-14 13:37:19,320 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2022-12-14 13:37:19,337 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:37:19,337 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 13:37:19,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:37:19,387 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;@1a8381ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:37:19,388 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-14 13:37:19,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:37:19,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 13:37:19,397 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:37:19,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 13:37:19,399 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:37:19,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:37:19,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2633557, now seen corresponding path program 1 times [2022-12-14 13:37:19,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:37:19,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334403379] [2022-12-14 13:37:19,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:37:19,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:37:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:37:19,537 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 13:37:19,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:37:19,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334403379] [2022-12-14 13:37:19,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334403379] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:37:19,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:37:19,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 13:37:19,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329477893] [2022-12-14 13:37:19,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:37:19,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:37:19,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:37:19,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:37:19,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:37:19,576 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 13:37:19,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:37:19,620 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2022-12-14 13:37:19,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:37:19,622 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 13:37:19,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:37:19,630 INFO L225 Difference]: With dead ends: 35 [2022-12-14 13:37:19,631 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 13:37:19,633 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 13:37:19,637 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:37:19,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 8 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:37:19,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 13:37:19,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2022-12-14 13:37:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 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 13:37:19,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-12-14 13:37:19,669 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 4 [2022-12-14 13:37:19,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:37:19,669 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-12-14 13:37:19,670 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 13:37:19,670 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-12-14 13:37:19,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 13:37:19,670 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:37:19,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 13:37:19,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:37:19,671 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:37:19,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:37:19,672 INFO L85 PathProgramCache]: Analyzing trace with hash 81640345, now seen corresponding path program 1 times [2022-12-14 13:37:19,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:37:19,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906149281] [2022-12-14 13:37:19,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:37:19,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:37:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:37:19,708 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 13:37:19,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:37:19,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906149281] [2022-12-14 13:37:19,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906149281] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:37:19,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:37:19,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 13:37:19,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364231231] [2022-12-14 13:37:19,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:37:19,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:37:19,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:37:19,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:37:19,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:37:19,712 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 13:37:19,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:37:19,742 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-12-14 13:37:19,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:37:19,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 13:37:19,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:37:19,743 INFO L225 Difference]: With dead ends: 29 [2022-12-14 13:37:19,743 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 13:37:19,744 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 13:37:19,746 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:37:19,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:37:19,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 13:37:19,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-12-14 13:37:19,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 24 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 13:37:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2022-12-14 13:37:19,753 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 5 [2022-12-14 13:37:19,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:37:19,753 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-12-14 13:37:19,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 13:37:19,754 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2022-12-14 13:37:19,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 13:37:19,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:37:19,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 13:37:19,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:37:19,755 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:37:19,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:37:19,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1764965715, now seen corresponding path program 1 times [2022-12-14 13:37:19,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:37:19,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233244602] [2022-12-14 13:37:19,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:37:19,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:37:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:37:19,800 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 13:37:19,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:37:19,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233244602] [2022-12-14 13:37:19,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233244602] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:37:19,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:37:19,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:37:19,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094372775] [2022-12-14 13:37:19,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:37:19,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:37:19,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:37:19,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:37:19,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:37:19,802 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:37:19,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:37:19,817 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2022-12-14 13:37:19,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:37:19,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 13:37:19,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:37:19,819 INFO L225 Difference]: With dead ends: 32 [2022-12-14 13:37:19,819 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 13:37:19,819 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 13:37:19,820 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:37:19,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 15 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:37:19,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 13:37:19,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2022-12-14 13:37:19,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.380952380952381) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 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 13:37:19,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-12-14 13:37:19,824 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 6 [2022-12-14 13:37:19,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:37:19,825 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-12-14 13:37:19,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:37:19,825 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2022-12-14 13:37:19,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 13:37:19,825 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:37:19,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:37:19,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 13:37:19,826 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:37:19,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:37:19,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1120637754, now seen corresponding path program 1 times [2022-12-14 13:37:19,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:37:19,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504196599] [2022-12-14 13:37:19,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:37:19,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:37:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:37:19,859 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 13:37:19,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:37:19,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504196599] [2022-12-14 13:37:19,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504196599] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:37:19,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:37:19,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 13:37:19,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703455326] [2022-12-14 13:37:19,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:37:19,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:37:19,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:37:19,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:37:19,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:37:19,862 INFO L87 Difference]: Start difference. First operand 24 states and 29 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 13:37:19,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:37:19,874 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2022-12-14 13:37:19,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:37:19,874 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 13:37:19,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:37:19,875 INFO L225 Difference]: With dead ends: 24 [2022-12-14 13:37:19,875 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 13:37:19,876 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 13:37:19,877 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:37:19,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 10 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:37:19,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 13:37:19,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-14 13:37:19,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 13:37:19,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-12-14 13:37:19,882 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 7 [2022-12-14 13:37:19,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:37:19,883 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-12-14 13:37:19,883 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 13:37:19,883 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-12-14 13:37:19,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 13:37:19,884 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:37:19,884 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 13:37:19,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 13:37:19,884 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:37:19,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:37:19,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1570637566, now seen corresponding path program 1 times [2022-12-14 13:37:19,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:37:19,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482220051] [2022-12-14 13:37:19,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:37:19,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:37:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:37:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:37:19,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:37:19,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482220051] [2022-12-14 13:37:19,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482220051] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:37:19,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827481844] [2022-12-14 13:37:19,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:37:19,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:37:19,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:37:19,944 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:37:19,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:37:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:37:19,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 13:37:19,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:37:20,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:37:20,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:37:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:37:20,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827481844] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:37:20,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1888997327] [2022-12-14 13:37:20,088 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 13:37:20,089 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:37:20,092 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:37:20,098 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:37:20,098 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:37:20,391 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:37:20,557 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '339#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~m~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~m~0#1| 2147483647))' at error location [2022-12-14 13:37:20,557 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:37:20,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:37:20,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-14 13:37:20,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129448224] [2022-12-14 13:37:20,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:37:20,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:37:20,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:37:20,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:37:20,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-12-14 13:37:20,559 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:37:20,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:37:20,609 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2022-12-14 13:37:20,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 13:37:20,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 13:37:20,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:37:20,610 INFO L225 Difference]: With dead ends: 61 [2022-12-14 13:37:20,611 INFO L226 Difference]: Without dead ends: 59 [2022-12-14 13:37:20,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-12-14 13:37:20,612 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 46 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:37:20,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 28 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:37:20,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-12-14 13:37:20,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 41. [2022-12-14 13:37:20,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 13:37:20,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-12-14 13:37:20,619 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 11 [2022-12-14 13:37:20,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:37:20,619 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-12-14 13:37:20,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:37:20,619 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-12-14 13:37:20,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 13:37:20,620 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:37:20,620 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1] [2022-12-14 13:37:20,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:37:20,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:37:20,822 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:37:20,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:37:20,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1518663580, now seen corresponding path program 2 times [2022-12-14 13:37:20,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:37:20,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74276576] [2022-12-14 13:37:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:37:20,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:37:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:37:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:37:21,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:37:21,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74276576] [2022-12-14 13:37:21,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74276576] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:37:21,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269498059] [2022-12-14 13:37:21,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:37:21,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:37:21,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:37:21,021 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:37:21,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:37:21,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 13:37:21,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:37:21,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 13:37:21,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:37:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:37:21,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:37:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:37:21,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269498059] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:37:21,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1629539540] [2022-12-14 13:37:21,162 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 13:37:21,162 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:37:21,162 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:37:21,162 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:37:21,162 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:37:21,310 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:37:21,487 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '610#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~m~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~m~0#1| 2147483647))' at error location [2022-12-14 13:37:21,487 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:37:21,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:37:21,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-14 13:37:21,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560283799] [2022-12-14 13:37:21,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:37:21,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 13:37:21,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:37:21,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 13:37:21,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2022-12-14 13:37:21,490 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 13:37:21,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:37:21,589 INFO L93 Difference]: Finished difference Result 175 states and 225 transitions. [2022-12-14 13:37:21,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 13:37:21,590 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-12-14 13:37:21,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:37:21,592 INFO L225 Difference]: With dead ends: 175 [2022-12-14 13:37:21,592 INFO L226 Difference]: Without dead ends: 173 [2022-12-14 13:37:21,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2022-12-14 13:37:21,593 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 113 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:37:21,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 68 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:37:21,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-12-14 13:37:21,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 101. [2022-12-14 13:37:21,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 99 states have (on average 1.2222222222222223) internal successors, (121), 100 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 13:37:21,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 121 transitions. [2022-12-14 13:37:21,601 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 121 transitions. Word has length 23 [2022-12-14 13:37:21,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:37:21,601 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 121 transitions. [2022-12-14 13:37:21,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 13:37:21,601 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 121 transitions. [2022-12-14 13:37:21,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-14 13:37:21,602 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:37:21,602 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 1, 1, 1, 1] [2022-12-14 13:37:21,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 13:37:21,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 13:37:21,804 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:37:21,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:37:21,806 INFO L85 PathProgramCache]: Analyzing trace with hash 830197808, now seen corresponding path program 3 times [2022-12-14 13:37:21,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:37:21,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599498789] [2022-12-14 13:37:21,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:37:21,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:37:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:37:22,118 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:37:22,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:37:22,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599498789] [2022-12-14 13:37:22,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599498789] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:37:22,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332929363] [2022-12-14 13:37:22,119 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 13:37:22,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:37:22,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:37:22,120 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:37:22,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 13:37:22,163 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 13:37:22,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:37:22,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 13:37:22,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:37:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:37:22,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:37:22,402 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:37:22,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332929363] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:37:22,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1078321412] [2022-12-14 13:37:22,405 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 13:37:22,405 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:37:22,405 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:37:22,405 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:37:22,405 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:37:22,526 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:37:22,651 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1245#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~m~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~m~0#1| 2147483647))' at error location [2022-12-14 13:37:22,651 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:37:22,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:37:22,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-12-14 13:37:22,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385305714] [2022-12-14 13:37:22,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:37:22,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 13:37:22,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:37:22,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 13:37:22,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=530, Unknown=0, NotChecked=0, Total=870 [2022-12-14 13:37:22,654 INFO L87 Difference]: Start difference. First operand 101 states and 121 transitions. Second operand has 24 states, 23 states have (on average 4.086956521739131) internal successors, (94), 23 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 13:37:22,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:37:22,890 INFO L93 Difference]: Finished difference Result 547 states and 696 transitions. [2022-12-14 13:37:22,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 13:37:22,891 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.086956521739131) internal successors, (94), 23 states have internal predecessors, (94), 0 states have call successors, (0), 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 47 [2022-12-14 13:37:22,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:37:22,893 INFO L225 Difference]: With dead ends: 547 [2022-12-14 13:37:22,893 INFO L226 Difference]: Without dead ends: 545 [2022-12-14 13:37:22,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=340, Invalid=530, Unknown=0, NotChecked=0, Total=870 [2022-12-14 13:37:22,895 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 361 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:37:22,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 138 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:37:22,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-12-14 13:37:22,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 221. [2022-12-14 13:37:22,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 219 states have (on average 1.2100456621004567) internal successors, (265), 220 states have internal predecessors, (265), 0 states have call successors, (0), 0 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 13:37:22,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 265 transitions. [2022-12-14 13:37:22,919 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 265 transitions. Word has length 47 [2022-12-14 13:37:22,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:37:22,919 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 265 transitions. [2022-12-14 13:37:22,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.086956521739131) internal successors, (94), 23 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 13:37:22,919 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 265 transitions. [2022-12-14 13:37:22,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 13:37:22,922 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:37:22,922 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 1, 1, 1, 1] [2022-12-14 13:37:22,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 13:37:23,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 13:37:23,124 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:37:23,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:37:23,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1003326520, now seen corresponding path program 4 times [2022-12-14 13:37:23,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:37:23,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344621717] [2022-12-14 13:37:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:37:23,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:37:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:37:23,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 1012 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:37:23,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:37:23,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344621717] [2022-12-14 13:37:23,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344621717] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:37:23,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65115776] [2022-12-14 13:37:23,743 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 13:37:23,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:37:23,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:37:23,744 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:37:23,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 13:37:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:37:23,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 13:37:23,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:37:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 1012 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:37:23,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:37:24,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 1012 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:37:24,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65115776] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:37:24,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [606621106] [2022-12-14 13:37:24,406 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 13:37:24,406 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:37:24,406 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:37:24,406 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:37:24,407 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:37:24,515 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:37:24,632 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2782#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~m~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~m~0#1| 2147483647))' at error location [2022-12-14 13:37:24,632 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:37:24,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:37:24,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-12-14 13:37:24,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038023732] [2022-12-14 13:37:24,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:37:24,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 13:37:24,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:37:24,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 13:37:24,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1240, Invalid=1622, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 13:37:24,634 INFO L87 Difference]: Start difference. First operand 221 states and 265 transitions. Second operand has 48 states, 47 states have (on average 4.042553191489362) internal successors, (190), 47 states have internal predecessors, (190), 0 states have call successors, (0), 0 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 13:37:25,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:37:25,116 INFO L93 Difference]: Finished difference Result 1831 states and 2286 transitions. [2022-12-14 13:37:25,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 13:37:25,117 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.042553191489362) internal successors, (190), 47 states have internal predecessors, (190), 0 states have call successors, (0), 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 95 [2022-12-14 13:37:25,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:37:25,122 INFO L225 Difference]: With dead ends: 1831 [2022-12-14 13:37:25,122 INFO L226 Difference]: Without dead ends: 1829 [2022-12-14 13:37:25,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1240, Invalid=1622, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 13:37:25,124 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1244 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:37:25,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 282 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 13:37:25,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2022-12-14 13:37:25,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 461. [2022-12-14 13:37:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 459 states have (on average 1.2047930283224402) internal successors, (553), 460 states have internal predecessors, (553), 0 states have call successors, (0), 0 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 13:37:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 553 transitions. [2022-12-14 13:37:25,158 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 553 transitions. Word has length 95 [2022-12-14 13:37:25,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:37:25,159 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 553 transitions. [2022-12-14 13:37:25,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.042553191489362) internal successors, (190), 47 states have internal predecessors, (190), 0 states have call successors, (0), 0 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 13:37:25,159 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 553 transitions. [2022-12-14 13:37:25,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-12-14 13:37:25,163 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:37:25,163 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 1, 1, 1, 1] [2022-12-14 13:37:25,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 13:37:25,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:37:25,364 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:37:25,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:37:25,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1354495240, now seen corresponding path program 5 times [2022-12-14 13:37:25,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:37:25,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316281890] [2022-12-14 13:37:25,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:37:25,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:37:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:37:26,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 4324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:37:26,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:37:26,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316281890] [2022-12-14 13:37:26,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316281890] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:37:26,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570708949] [2022-12-14 13:37:26,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:37:26,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:37:26,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:37:26,873 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:37:26,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 13:37:27,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-12-14 13:37:27,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:37:27,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 13:37:27,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:37:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 4324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:37:27,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:37:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 4324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:37:29,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570708949] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:37:29,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1874805741] [2022-12-14 13:37:29,224 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 13:37:29,224 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:37:29,225 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:37:29,225 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:37:29,225 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:37:29,312 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:37:29,448 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6773#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~m~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~m~0#1| 2147483647))' at error location [2022-12-14 13:37:29,448 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:37:29,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:37:29,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-12-14 13:37:29,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524214411] [2022-12-14 13:37:29,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:37:29,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-12-14 13:37:29,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:37:29,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-12-14 13:37:29,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4768, Invalid=5534, Unknown=0, NotChecked=0, Total=10302 [2022-12-14 13:37:29,457 INFO L87 Difference]: Start difference. First operand 461 states and 553 transitions. Second operand has 96 states, 95 states have (on average 4.021052631578947) internal successors, (382), 95 states have internal predecessors, (382), 0 states have call successors, (0), 0 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 13:37:32,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:37:32,017 INFO L93 Difference]: Finished difference Result 6559 states and 8058 transitions. [2022-12-14 13:37:32,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-14 13:37:32,018 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.021052631578947) internal successors, (382), 95 states have internal predecessors, (382), 0 states have call successors, (0), 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 191 [2022-12-14 13:37:32,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:37:32,029 INFO L225 Difference]: With dead ends: 6559 [2022-12-14 13:37:32,030 INFO L226 Difference]: Without dead ends: 6557 [2022-12-14 13:37:32,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4768, Invalid=5534, Unknown=0, NotChecked=0, Total=10302 [2022-12-14 13:37:32,033 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2260 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2260 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 13:37:32,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2260 Valid, 570 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 13:37:32,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6557 states. [2022-12-14 13:37:32,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6557 to 941. [2022-12-14 13:37:32,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 939 states have (on average 1.20234291799787) internal successors, (1129), 940 states have internal predecessors, (1129), 0 states have call successors, (0), 0 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 13:37:32,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1129 transitions. [2022-12-14 13:37:32,086 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1129 transitions. Word has length 191 [2022-12-14 13:37:32,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:37:32,086 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1129 transitions. [2022-12-14 13:37:32,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.021052631578947) internal successors, (382), 95 states have internal predecessors, (382), 0 states have call successors, (0), 0 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 13:37:32,087 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1129 transitions. [2022-12-14 13:37:32,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-12-14 13:37:32,091 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:37:32,091 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 94, 1, 1, 1, 1] [2022-12-14 13:37:32,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 13:37:32,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:37:32,292 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:37:32,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:37:32,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1383627096, now seen corresponding path program 6 times [2022-12-14 13:37:32,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:37:32,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815083586] [2022-12-14 13:37:32,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:37:32,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:37:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:37:37,395 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 17860 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:37:37,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:37:37,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815083586] [2022-12-14 13:37:37,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815083586] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:37:37,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431719511] [2022-12-14 13:37:37,396 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 13:37:37,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:37:37,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:37:37,397 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:37:37,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 13:37:37,541 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 13:37:37,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:37:37,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-14 13:37:37,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:37:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 17860 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:37:37,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:37:44,112 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 17860 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:37:44,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431719511] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:37:44,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1474347959] [2022-12-14 13:37:44,113 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 13:37:44,113 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:37:44,113 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:37:44,113 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:37:44,113 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:37:44,201 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:37:44,488 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18264#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~m~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~m~0#1| 2147483647))' at error location [2022-12-14 13:37:44,488 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:37:44,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:37:44,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-12-14 13:37:44,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126858466] [2022-12-14 13:37:44,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:37:44,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-12-14 13:37:44,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:37:44,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-12-14 13:37:44,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18736, Invalid=20270, Unknown=0, NotChecked=0, Total=39006 [2022-12-14 13:37:44,499 INFO L87 Difference]: Start difference. First operand 941 states and 1129 transitions. Second operand has 192 states, 191 states have (on average 4.010471204188482) internal successors, (766), 191 states have internal predecessors, (766), 0 states have call successors, (0), 0 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 13:38:09,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:38:09,281 INFO L93 Difference]: Finished difference Result 24655 states and 29970 transitions. [2022-12-14 13:38:09,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-12-14 13:38:09,281 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.010471204188482) internal successors, (766), 191 states have internal predecessors, (766), 0 states have call successors, (0), 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 383 [2022-12-14 13:38:09,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:38:09,330 INFO L225 Difference]: With dead ends: 24655 [2022-12-14 13:38:09,330 INFO L226 Difference]: Without dead ends: 24653 [2022-12-14 13:38:09,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1242 GetRequests, 1046 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1894 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=18736, Invalid=20270, Unknown=0, NotChecked=0, Total=39006 [2022-12-14 13:38:09,340 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6131 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 1007 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6131 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1007 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 13:38:09,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6131 Valid, 1146 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1007 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 13:38:09,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24653 states. [2022-12-14 13:38:09,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24653 to 1901. [2022-12-14 13:38:09,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1901 states, 1899 states have (on average 1.20115850447604) internal successors, (2281), 1900 states have internal predecessors, (2281), 0 states have call successors, (0), 0 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 13:38:09,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1901 states to 1901 states and 2281 transitions. [2022-12-14 13:38:09,521 INFO L78 Accepts]: Start accepts. Automaton has 1901 states and 2281 transitions. Word has length 383 [2022-12-14 13:38:09,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:38:09,522 INFO L495 AbstractCegarLoop]: Abstraction has 1901 states and 2281 transitions. [2022-12-14 13:38:09,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.010471204188482) internal successors, (766), 191 states have internal predecessors, (766), 0 states have call successors, (0), 0 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 13:38:09,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1901 states and 2281 transitions. [2022-12-14 13:38:09,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2022-12-14 13:38:09,537 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:38:09,537 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 190, 1, 1, 1, 1] [2022-12-14 13:38:09,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 13:38:09,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 13:38:09,737 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:38:09,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:38:09,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2128194024, now seen corresponding path program 7 times [2022-12-14 13:38:09,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:38:09,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640668004] [2022-12-14 13:38:09,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:38:09,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:38:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:38:31,111 INFO L134 CoverageAnalysis]: Checked inductivity of 72580 backedges. 0 proven. 72580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:38:31,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:38:31,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640668004] [2022-12-14 13:38:31,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640668004] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:38:31,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509177316] [2022-12-14 13:38:31,112 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 13:38:31,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:38:31,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:38:31,113 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:38:31,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 13:38:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:38:31,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 192 conjunts are in the unsatisfiable core [2022-12-14 13:38:31,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:38:31,906 INFO L134 CoverageAnalysis]: Checked inductivity of 72580 backedges. 0 proven. 72580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:38:31,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:38:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 72580 backedges. 0 proven. 72580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:38:59,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509177316] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:38:59,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [719510432] [2022-12-14 13:38:59,997 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 13:38:59,997 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:38:59,997 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:38:59,997 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:38:59,997 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:39:00,079 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:39:00,593 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '55123#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~m~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~m~0#1| 2147483647))' at error location [2022-12-14 13:39:00,593 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:39:00,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:39:00,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-12-14 13:39:00,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761935323] [2022-12-14 13:39:00,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:39:00,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-12-14 13:39:00,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:39:00,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-12-14 13:39:00,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74326, Invalid=78164, Unknown=0, NotChecked=0, Total=152490 [2022-12-14 13:39:00,615 INFO L87 Difference]: Start difference. First operand 1901 states and 2281 transitions. Second operand has 384 states, 383 states have (on average 4.005221932114883) internal successors, (1534), 383 states have internal predecessors, (1534), 0 states have call successors, (0), 0 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 13:44:30,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:44:30,004 INFO L93 Difference]: Finished difference Result 95407 states and 115266 transitions. [2022-12-14 13:44:30,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-12-14 13:44:30,006 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.005221932114883) internal successors, (1534), 383 states have internal predecessors, (1534), 0 states have call successors, (0), 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 767 [2022-12-14 13:44:30,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:44:30,112 INFO L225 Difference]: With dead ends: 95407 [2022-12-14 13:44:30,112 INFO L226 Difference]: Without dead ends: 95405 [2022-12-14 13:44:30,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2490 GetRequests, 2101 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4391 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=74326, Invalid=78164, Unknown=0, NotChecked=0, Total=152490 [2022-12-14 13:44:30,138 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 13123 mSDsluCounter, 2288 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 2141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13123 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 4452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2141 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-14 13:44:30,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13123 Valid, 2296 Invalid, 4452 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2141 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-12-14 13:44:30,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95405 states. [2022-12-14 13:44:30,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95405 to 3821. [2022-12-14 13:44:30,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3821 states, 3819 states have (on average 1.2005760670332548) internal successors, (4585), 3820 states have internal predecessors, (4585), 0 states have call successors, (0), 0 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 13:44:30,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3821 states to 3821 states and 4585 transitions. [2022-12-14 13:44:30,776 INFO L78 Accepts]: Start accepts. Automaton has 3821 states and 4585 transitions. Word has length 767 [2022-12-14 13:44:30,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:44:30,777 INFO L495 AbstractCegarLoop]: Abstraction has 3821 states and 4585 transitions. [2022-12-14 13:44:30,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.005221932114883) internal successors, (1534), 383 states have internal predecessors, (1534), 0 states have call successors, (0), 0 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 13:44:30,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3821 states and 4585 transitions. [2022-12-14 13:44:30,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1536 [2022-12-14 13:44:30,791 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:44:30,791 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 383, 382, 1, 1, 1, 1] [2022-12-14 13:44:30,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 13:44:30,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:44:30,992 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 13:44:30,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:44:30,993 INFO L85 PathProgramCache]: Analyzing trace with hash 529928088, now seen corresponding path program 8 times [2022-12-14 13:44:30,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:44:30,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582846647] [2022-12-14 13:44:30,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:44:30,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:44:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:46:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 292612 backedges. 0 proven. 292612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:46:21,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:46:21,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582846647] [2022-12-14 13:46:21,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582846647] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:46:21,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100212533] [2022-12-14 13:46:21,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:46:21,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:46:21,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:46:21,958 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:46:21,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ba0d3e9-c8d2-4926-af0c-ed5c2ca4a397/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 13:46:29,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-12-14 13:46:29,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:46:29,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 384 conjunts are in the unsatisfiable core [2022-12-14 13:46:29,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:46:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 292612 backedges. 0 proven. 292612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:46:30,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:48:22,736 INFO L134 CoverageAnalysis]: Checked inductivity of 292612 backedges. 0 proven. 292612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:48:22,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100212533] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:48:22,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [23901876] [2022-12-14 13:48:22,739 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 13:48:22,739 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:48:22,740 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:48:22,740 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:48:22,740 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:48:22,828 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:48:23,839 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '184191#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~m~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~m~0#1| 2147483647))' at error location [2022-12-14 13:48:23,839 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:48:23,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:48:23,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 766 [2022-12-14 13:48:23,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971472354] [2022-12-14 13:48:23,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:48:23,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2022-12-14 13:48:23,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:48:23,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2022-12-14 13:48:23,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296086, Invalid=303764, Unknown=0, NotChecked=0, Total=599850 [2022-12-14 13:48:23,909 INFO L87 Difference]: Start difference. First operand 3821 states and 4585 transitions. Second operand has 768 states, 767 states have (on average 4.0026075619295955) internal successors, (3070), 767 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)