./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/bor2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/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_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/bor2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a66d4c531614f6a758ec8a672ead44330d05e74c75b0a444a0f213a0e825065 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 05:33:06,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:33:06,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:33:06,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:33:06,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:33:06,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:33:06,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:33:06,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:33:06,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:33:06,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:33:06,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:33:06,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:33:06,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:33:06,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:33:06,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:33:06,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:33:06,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:33:06,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:33:06,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:33:06,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:33:06,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:33:06,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:33:06,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:33:06,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:33:06,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:33:06,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:33:06,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:33:06,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:33:06,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:33:06,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:33:06,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:33:06,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:33:06,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:33:06,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:33:06,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:33:06,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:33:06,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:33:06,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:33:06,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:33:06,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:33:06,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:33:06,755 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:33:06,773 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:33:06,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:33:06,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:33:06,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:33:06,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:33:06,775 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:33:06,775 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:33:06,775 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:33:06,775 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:33:06,775 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:33:06,776 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:33:06,776 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:33:06,776 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:33:06,776 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:33:06,776 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:33:06,776 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:33:06,777 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:33:06,777 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:33:06,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:33:06,777 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:33:06,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:33:06,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:33:06,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:33:06,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:33:06,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:33:06,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:33:06,778 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:33:06,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:33:06,779 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:33:06,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:33:06,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:33:06,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:33:06,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:33:06,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:33:06,780 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:33:06,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:33:06,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:33:06,780 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:33:06,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:33:06,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:33:06,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:33:06,781 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_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a66d4c531614f6a758ec8a672ead44330d05e74c75b0a444a0f213a0e825065 [2022-12-14 05:33:06,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:33:06,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:33:06,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:33:06,975 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:33:06,975 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:33:06,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-crafted/bor2.i [2022-12-14 05:33:09,568 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:33:09,703 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:33:09,703 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/sv-benchmarks/c/array-crafted/bor2.i [2022-12-14 05:33:09,707 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/data/b03f9e67a/aec0240a6e51403eacf70a35383cd21d/FLAGf0f22cf0c [2022-12-14 05:33:09,718 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/data/b03f9e67a/aec0240a6e51403eacf70a35383cd21d [2022-12-14 05:33:09,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:33:09,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:33:09,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:33:09,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:33:09,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:33:09,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:33:09" (1/1) ... [2022-12-14 05:33:09,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@273269e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:09, skipping insertion in model container [2022-12-14 05:33:09,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:33:09" (1/1) ... [2022-12-14 05:33:09,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:33:09,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:33:09,885 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/sv-benchmarks/c/array-crafted/bor2.i[1291,1304] [2022-12-14 05:33:09,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:33:09,894 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:33:09,909 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/sv-benchmarks/c/array-crafted/bor2.i[1291,1304] [2022-12-14 05:33:09,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:33:09,919 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:33:09,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:09 WrapperNode [2022-12-14 05:33:09,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:33:09,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:33:09,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:33:09,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:33:09,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:09" (1/1) ... [2022-12-14 05:33:09,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:09" (1/1) ... [2022-12-14 05:33:09,944 INFO L138 Inliner]: procedures = 16, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 74 [2022-12-14 05:33:09,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:33:09,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:33:09,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:33:09,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:33:09,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:09" (1/1) ... [2022-12-14 05:33:09,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:09" (1/1) ... [2022-12-14 05:33:09,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:09" (1/1) ... [2022-12-14 05:33:09,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:09" (1/1) ... [2022-12-14 05:33:09,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:09" (1/1) ... [2022-12-14 05:33:09,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:09" (1/1) ... [2022-12-14 05:33:09,961 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:09" (1/1) ... [2022-12-14 05:33:09,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:09" (1/1) ... [2022-12-14 05:33:09,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:33:09,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:33:09,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:33:09,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:33:09,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:09" (1/1) ... [2022-12-14 05:33:09,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:33:09,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:09,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:33:09,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:33:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:33:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2022-12-14 05:33:10,025 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2022-12-14 05:33:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:33:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:33:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 05:33:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:33:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:33:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 05:33:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:33:10,092 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:33:10,094 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:33:10,223 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:33:10,284 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:33:10,284 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 05:33:10,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:33:10 BoogieIcfgContainer [2022-12-14 05:33:10,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:33:10,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:33:10,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:33:10,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:33:10,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:33:09" (1/3) ... [2022-12-14 05:33:10,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3833ea8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:33:10, skipping insertion in model container [2022-12-14 05:33:10,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:33:09" (2/3) ... [2022-12-14 05:33:10,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3833ea8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:33:10, skipping insertion in model container [2022-12-14 05:33:10,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:33:10" (3/3) ... [2022-12-14 05:33:10,293 INFO L112 eAbstractionObserver]: Analyzing ICFG bor2.i [2022-12-14 05:33:10,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:33:10,308 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:33:10,343 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:33:10,348 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;@7be6aad4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:33:10,348 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:33:10,351 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:10,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 05:33:10,357 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:10,357 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:10,358 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:10,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:10,362 INFO L85 PathProgramCache]: Analyzing trace with hash -308016243, now seen corresponding path program 1 times [2022-12-14 05:33:10,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:10,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934885874] [2022-12-14 05:33:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:10,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 05:33:10,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:10,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934885874] [2022-12-14 05:33:10,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934885874] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:10,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:33:10,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:33:10,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611291650] [2022-12-14 05:33:10,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:10,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:33:10,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:10,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:33:10,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:33:10,620 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 05:33:10,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:10,664 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2022-12-14 05:33:10,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:33:10,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2022-12-14 05:33:10,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:10,672 INFO L225 Difference]: With dead ends: 33 [2022-12-14 05:33:10,672 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 05:33:10,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:33:10,677 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:10,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:33:10,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 05:33:10,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-14 05:33:10,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-12-14 05:33:10,703 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2022-12-14 05:33:10,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:10,703 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-12-14 05:33:10,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 05:33:10,703 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-12-14 05:33:10,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 05:33:10,704 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:10,705 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:10,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:33:10,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:10,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:10,706 INFO L85 PathProgramCache]: Analyzing trace with hash -545992349, now seen corresponding path program 1 times [2022-12-14 05:33:10,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:10,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186678753] [2022-12-14 05:33:10,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:10,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 05:33:10,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:10,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186678753] [2022-12-14 05:33:10,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186678753] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:10,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760712257] [2022-12-14 05:33:10,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:10,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:10,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:10,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:10,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:33:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:10,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 05:33:10,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:10,926 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 05:33:10,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:33:10,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760712257] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:10,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:33:10,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 05:33:10,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700018974] [2022-12-14 05:33:10,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:10,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:33:10,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:10,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:33:10,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:33:10,930 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 05:33:10,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:10,951 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2022-12-14 05:33:10,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:33:10,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2022-12-14 05:33:10,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:10,952 INFO L225 Difference]: With dead ends: 29 [2022-12-14 05:33:10,952 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 05:33:10,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:33:10,954 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:10,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:33:10,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 05:33:10,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-14 05:33:10,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:10,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-12-14 05:33:10,959 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2022-12-14 05:33:10,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:10,960 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-12-14 05:33:10,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 05:33:10,960 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-12-14 05:33:10,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 05:33:10,960 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:10,961 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:10,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:33:11,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:11,163 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:11,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:11,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1178293804, now seen corresponding path program 1 times [2022-12-14 05:33:11,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:11,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120171593] [2022-12-14 05:33:11,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:11,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:11,326 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 05:33:11,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:11,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120171593] [2022-12-14 05:33:11,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120171593] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:11,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468691124] [2022-12-14 05:33:11,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:11,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:11,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:11,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:11,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:33:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:11,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 05:33:11,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:33:11,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:33:11,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468691124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:11,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:33:11,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 05:33:11,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241970573] [2022-12-14 05:33:11,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:11,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:33:11,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:11,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:33:11,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:33:11,406 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 05:33:11,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:11,422 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-12-14 05:33:11,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:33:11,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-12-14 05:33:11,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:11,423 INFO L225 Difference]: With dead ends: 27 [2022-12-14 05:33:11,423 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 05:33:11,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:33:11,424 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:11,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:33:11,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 05:33:11,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-14 05:33:11,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:11,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-12-14 05:33:11,427 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2022-12-14 05:33:11,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:11,428 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-12-14 05:33:11,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 05:33:11,428 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-12-14 05:33:11,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 05:33:11,429 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:11,429 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:11,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 05:33:11,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:11,631 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:11,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:11,633 INFO L85 PathProgramCache]: Analyzing trace with hash 733965212, now seen corresponding path program 1 times [2022-12-14 05:33:11,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:11,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397123899] [2022-12-14 05:33:11,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:11,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 05:33:11,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:11,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397123899] [2022-12-14 05:33:11,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397123899] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:11,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460169192] [2022-12-14 05:33:11,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:11,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:11,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:11,805 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:11,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:33:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:11,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:33:11,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:11,888 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 05:33:11,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:11,917 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 05:33:11,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460169192] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:11,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1920724055] [2022-12-14 05:33:11,935 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 05:33:11,935 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:33:11,938 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:33:11,943 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:33:11,943 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:33:12,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,031 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:33:12,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 05:33:12,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,059 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:33:12,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:33:12,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-12-14 05:33:12,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:12,255 INFO L321 Elim1Store]: treesize reduction 126, result has 21.7 percent of original size [2022-12-14 05:33:12,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2022-12-14 05:33:12,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:33:12,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 05:33:12,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-12-14 05:33:12,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:12,686 INFO L321 Elim1Store]: treesize reduction 40, result has 42.0 percent of original size [2022-12-14 05:33:12,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 85 [2022-12-14 05:33:12,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 05:33:12,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:12,840 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2022-12-14 05:33:12,907 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:33:13,589 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '524#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |ULTIMATE.start_main_~i~1#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 999 |ULTIMATE.start_main_~i~2#1|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (exists ((v_bor_~res~0_BEFORE_RETURN_5 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_5 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_5 4294967296) (+ (mod v_bor_~res~0_BEFORE_RETURN_5 4294967296) (- 4294967296))))) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:33:13,590 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:33:13,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:33:13,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2022-12-14 05:33:13,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001521798] [2022-12-14 05:33:13,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:33:13,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:33:13,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:13,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:33:13,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-12-14 05:33:13,592 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 05:33:13,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:13,615 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-12-14 05:33:13,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:33:13,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 25 [2022-12-14 05:33:13,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:13,616 INFO L225 Difference]: With dead ends: 36 [2022-12-14 05:33:13,616 INFO L226 Difference]: Without dead ends: 21 [2022-12-14 05:33:13,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-12-14 05:33:13,617 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:13,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:33:13,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-14 05:33:13,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-12-14 05:33:13,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:13,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-12-14 05:33:13,620 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2022-12-14 05:33:13,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:13,620 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-12-14 05:33:13,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 05:33:13,620 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-12-14 05:33:13,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 05:33:13,620 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:13,620 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:13,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 05:33:13,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:13,822 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:13,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:13,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1348434362, now seen corresponding path program 2 times [2022-12-14 05:33:13,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:13,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663224172] [2022-12-14 05:33:13,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:13,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:13,931 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 05:33:13,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:13,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663224172] [2022-12-14 05:33:13,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663224172] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:13,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868417069] [2022-12-14 05:33:13,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:33:13,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:13,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:13,933 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:13,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:33:13,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 05:33:13,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:33:13,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:33:13,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:14,009 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 05:33:14,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:14,026 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 05:33:14,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868417069] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:14,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [540824086] [2022-12-14 05:33:14,028 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 05:33:14,028 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:33:14,029 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:33:14,029 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:33:14,029 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:33:14,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:14,053 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:33:14,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:33:14,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:14,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:33:14,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:14,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-12-14 05:33:14,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:14,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:14,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:14,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:14,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:14,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:14,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:14,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:14,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:14,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:14,162 INFO L321 Elim1Store]: treesize reduction 144, result has 13.3 percent of original size [2022-12-14 05:33:14,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2022-12-14 05:33:14,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:33:14,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:14,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 05:33:14,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:14,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:14,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 05:33:14,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:14,378 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 05:33:14,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-12-14 05:33:14,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 05:33:14,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:14,490 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2022-12-14 05:33:14,548 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:33:19,224 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '797#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |ULTIMATE.start_main_~i~1#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= 999 |ULTIMATE.start_main_~i~2#1|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:33:19,224 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:33:19,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:33:19,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 05:33:19,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441350583] [2022-12-14 05:33:19,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:33:19,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:33:19,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:19,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:33:19,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=299, Unknown=1, NotChecked=0, Total=380 [2022-12-14 05:33:19,226 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 05:33:19,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:19,248 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2022-12-14 05:33:19,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:33:19,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 28 [2022-12-14 05:33:19,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:19,250 INFO L225 Difference]: With dead ends: 38 [2022-12-14 05:33:19,250 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 05:33:19,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=80, Invalid=299, Unknown=1, NotChecked=0, Total=380 [2022-12-14 05:33:19,251 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:19,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:33:19,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 05:33:19,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-14 05:33:19,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:19,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-12-14 05:33:19,254 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2022-12-14 05:33:19,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:19,254 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-12-14 05:33:19,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 05:33:19,255 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-12-14 05:33:19,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 05:33:19,255 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:19,255 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:19,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:33:19,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:19,456 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:19,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:19,457 INFO L85 PathProgramCache]: Analyzing trace with hash -739907839, now seen corresponding path program 3 times [2022-12-14 05:33:19,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:19,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826782152] [2022-12-14 05:33:19,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:19,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:19,528 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-14 05:33:19,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:19,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826782152] [2022-12-14 05:33:19,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826782152] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:19,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378609038] [2022-12-14 05:33:19,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:33:19,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:19,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:19,529 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:19,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 05:33:19,594 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:33:19,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:33:19,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 05:33:19,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-14 05:33:19,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-14 05:33:19,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378609038] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:19,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1196901275] [2022-12-14 05:33:19,682 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 05:33:19,682 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:33:19,682 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:33:19,682 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:33:19,683 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:33:19,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:19,706 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:33:19,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 05:33:19,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:19,727 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:33:19,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:33:19,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:19,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-12-14 05:33:19,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:19,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:19,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:19,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:19,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:19,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:19,825 INFO L321 Elim1Store]: treesize reduction 126, result has 21.7 percent of original size [2022-12-14 05:33:19,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2022-12-14 05:33:19,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:33:19,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:19,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 05:33:20,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:20,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:20,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 05:33:20,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:20,063 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 05:33:20,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-12-14 05:33:20,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 05:33:20,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:20,170 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2022-12-14 05:33:20,234 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:33:24,879 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1141#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |ULTIMATE.start_main_~i~1#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= |#NULL.offset| 0) (<= 999 |ULTIMATE.start_main_~i~2#1|) (exists ((v_bor_~res~0_BEFORE_RETURN_17 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_17 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_17 4294967296) (+ (mod v_bor_~res~0_BEFORE_RETURN_17 4294967296) (- 4294967296))))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:33:24,879 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:33:24,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:33:24,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2022-12-14 05:33:24,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399678758] [2022-12-14 05:33:24,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:33:24,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 05:33:24,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:24,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 05:33:24,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2022-12-14 05:33:24,882 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 05:33:24,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:24,913 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2022-12-14 05:33:24,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 05:33:24,914 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 37 [2022-12-14 05:33:24,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:24,915 INFO L225 Difference]: With dead ends: 49 [2022-12-14 05:33:24,915 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 05:33:24,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2022-12-14 05:33:24,916 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:24,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:33:24,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 05:33:24,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-12-14 05:33:24,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:24,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-12-14 05:33:24,919 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2022-12-14 05:33:24,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:24,919 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-12-14 05:33:24,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 05:33:24,919 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-12-14 05:33:24,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-14 05:33:24,920 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:24,920 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:24,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 05:33:25,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 05:33:25,122 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:25,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:25,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1575268237, now seen corresponding path program 4 times [2022-12-14 05:33:25,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:25,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429460840] [2022-12-14 05:33:25,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:25,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:25,371 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-12-14 05:33:25,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:25,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429460840] [2022-12-14 05:33:25,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429460840] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:25,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798707231] [2022-12-14 05:33:25,371 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 05:33:25,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:25,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:25,372 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:25,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 05:33:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:25,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 05:33:25,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-12-14 05:33:25,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-12-14 05:33:25,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798707231] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:25,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2036941928] [2022-12-14 05:33:25,621 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 05:33:25,622 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:33:25,622 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:33:25,622 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:33:25,622 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:33:25,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:25,645 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:33:25,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 05:33:25,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:25,667 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:33:25,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:33:25,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:25,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-12-14 05:33:25,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:25,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:25,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:25,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:25,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:25,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:25,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:25,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:25,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:25,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:25,784 INFO L321 Elim1Store]: treesize reduction 144, result has 13.3 percent of original size [2022-12-14 05:33:25,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2022-12-14 05:33:25,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:33:25,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:25,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 05:33:25,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:25,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:25,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 05:33:25,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:25,972 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 05:33:25,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-12-14 05:33:25,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 05:33:25,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:26,082 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2022-12-14 05:33:26,127 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:33:30,852 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1574#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |ULTIMATE.start_main_~i~1#1|) (exists ((v_bor_~res~0_BEFORE_RETURN_24 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_24 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_24 4294967296) (+ (mod v_bor_~res~0_BEFORE_RETURN_24 4294967296) (- 4294967296))))) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= |#NULL.offset| 0) (<= 999 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:33:30,852 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:33:30,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:33:30,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2022-12-14 05:33:30,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521468915] [2022-12-14 05:33:30,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:33:30,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 05:33:30,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:30,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 05:33:30,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 05:33:30,854 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 05:33:30,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:30,896 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2022-12-14 05:33:30,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 05:33:30,897 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2022-12-14 05:33:30,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:30,898 INFO L225 Difference]: With dead ends: 62 [2022-12-14 05:33:30,898 INFO L226 Difference]: Without dead ends: 43 [2022-12-14 05:33:30,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 05:33:30,899 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:30,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:33:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-12-14 05:33:30,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-12-14 05:33:30,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:30,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-12-14 05:33:30,903 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 44 [2022-12-14 05:33:30,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:30,903 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-12-14 05:33:30,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 05:33:30,903 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-12-14 05:33:30,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 05:33:30,905 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:30,905 INFO L195 NwaCegarLoop]: trace histogram [22, 12, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:30,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 05:33:31,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:31,107 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:31,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:31,108 INFO L85 PathProgramCache]: Analyzing trace with hash -2048376819, now seen corresponding path program 5 times [2022-12-14 05:33:31,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:31,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467425223] [2022-12-14 05:33:31,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:31,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:31,594 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-12-14 05:33:31,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:31,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467425223] [2022-12-14 05:33:31,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467425223] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:31,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538515037] [2022-12-14 05:33:31,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:33:31,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:31,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:31,595 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:31,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 05:33:31,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 05:33:31,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:33:31,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 05:33:31,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-12-14 05:33:31,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-12-14 05:33:31,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538515037] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:31,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1622088941] [2022-12-14 05:33:31,802 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 05:33:31,802 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:33:31,803 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:33:31,803 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:33:31,803 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:33:31,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:31,826 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:33:31,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:33:31,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:31,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:33:31,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:31,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-12-14 05:33:31,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:31,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:31,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:31,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:31,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:31,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:31,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:31,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:31,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:31,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:31,921 INFO L321 Elim1Store]: treesize reduction 144, result has 13.3 percent of original size [2022-12-14 05:33:31,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2022-12-14 05:33:31,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:33:32,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:32,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 05:33:32,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:32,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-12-14 05:33:32,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:32,103 INFO L321 Elim1Store]: treesize reduction 40, result has 42.0 percent of original size [2022-12-14 05:33:32,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 85 [2022-12-14 05:33:32,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 05:33:32,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:32,193 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2022-12-14 05:33:32,251 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:33:33,172 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2139#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |ULTIMATE.start_main_~i~1#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 999 |ULTIMATE.start_main_~i~2#1|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (exists ((v_bor_~res~0_BEFORE_RETURN_29 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_29 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_29 4294967296) (+ (mod v_bor_~res~0_BEFORE_RETURN_29 4294967296) (- 4294967296))))) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:33:33,172 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:33:33,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:33:33,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 35 [2022-12-14 05:33:33,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845092229] [2022-12-14 05:33:33,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:33:33,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 05:33:33,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:33,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 05:33:33,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 05:33:33,175 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 05:33:33,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:33,228 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2022-12-14 05:33:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-14 05:33:33,229 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-12-14 05:33:33,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:33,229 INFO L225 Difference]: With dead ends: 69 [2022-12-14 05:33:33,229 INFO L226 Difference]: Without dead ends: 50 [2022-12-14 05:33:33,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 05:33:33,231 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:33,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:33:33,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-14 05:33:33,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-12-14 05:33:33,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:33,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-12-14 05:33:33,237 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 56 [2022-12-14 05:33:33,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:33,237 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-12-14 05:33:33,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 05:33:33,238 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-12-14 05:33:33,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 05:33:33,239 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:33,239 INFO L195 NwaCegarLoop]: trace histogram [30, 23, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:33,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 05:33:33,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:33,441 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:33,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:33,442 INFO L85 PathProgramCache]: Analyzing trace with hash -596580093, now seen corresponding path program 6 times [2022-12-14 05:33:33,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:33,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498276472] [2022-12-14 05:33:33,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:33,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-12-14 05:33:34,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:34,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498276472] [2022-12-14 05:33:34,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498276472] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:34,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227357095] [2022-12-14 05:33:34,103 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:33:34,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:34,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:34,104 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:34,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 05:33:34,225 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:33:34,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:33:34,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 05:33:34,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-12-14 05:33:34,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:34,704 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-12-14 05:33:34,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227357095] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:34,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1698535834] [2022-12-14 05:33:34,707 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 05:33:34,707 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:33:34,707 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:33:34,707 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:33:34,707 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:33:34,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:34,732 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:33:34,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:33:34,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:34,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:33:34,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:34,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-12-14 05:33:34,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:34,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:34,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:34,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:34,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:34,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:34,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:34,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:34,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:34,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:34,822 INFO L321 Elim1Store]: treesize reduction 144, result has 13.3 percent of original size [2022-12-14 05:33:34,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2022-12-14 05:33:34,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:33:34,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:34,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 05:33:34,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:34,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-12-14 05:33:34,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:35,003 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-12-14 05:33:35,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-12-14 05:33:35,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 05:33:35,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:35,111 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2022-12-14 05:33:35,159 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:33:40,097 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2862#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |ULTIMATE.start_main_~i~1#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 999 |ULTIMATE.start_main_~i~2#1|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((v_bor_~res~0_BEFORE_RETURN_36 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_36 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_36 4294967296) (+ (mod v_bor_~res~0_BEFORE_RETURN_36 4294967296) (- 4294967296))))) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:33:40,097 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:33:40,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:33:40,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 51 [2022-12-14 05:33:40,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915807483] [2022-12-14 05:33:40,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:33:40,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-14 05:33:40,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:40,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-14 05:33:40,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1335, Invalid=2697, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 05:33:40,100 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 05:33:40,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:40,163 INFO L93 Difference]: Finished difference Result 100 states and 132 transitions. [2022-12-14 05:33:40,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-14 05:33:40,164 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2022-12-14 05:33:40,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:40,164 INFO L225 Difference]: With dead ends: 100 [2022-12-14 05:33:40,164 INFO L226 Difference]: Without dead ends: 75 [2022-12-14 05:33:40,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1335, Invalid=2697, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 05:33:40,166 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:40,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:33:40,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-12-14 05:33:40,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-12-14 05:33:40,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:40,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2022-12-14 05:33:40,170 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 75 [2022-12-14 05:33:40,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:40,170 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2022-12-14 05:33:40,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 05:33:40,170 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2022-12-14 05:33:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-14 05:33:40,171 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:40,171 INFO L195 NwaCegarLoop]: trace histogram [48, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:40,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 05:33:40,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:40,373 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:40,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:40,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1061278867, now seen corresponding path program 7 times [2022-12-14 05:33:40,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:40,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292667652] [2022-12-14 05:33:40,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:40,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-12-14 05:33:42,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:42,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292667652] [2022-12-14 05:33:42,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292667652] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:42,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446164177] [2022-12-14 05:33:42,084 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 05:33:42,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:42,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:42,085 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:42,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 05:33:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:42,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-14 05:33:42,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-12-14 05:33:42,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-12-14 05:33:44,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446164177] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:44,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1631088716] [2022-12-14 05:33:44,457 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 05:33:44,457 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:33:44,457 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:33:44,457 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:33:44,457 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:33:44,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:44,476 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:33:44,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:33:44,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:44,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:33:44,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:44,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-12-14 05:33:44,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:44,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:44,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:44,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:44,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:44,550 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:44,581 INFO L321 Elim1Store]: treesize reduction 126, result has 21.7 percent of original size [2022-12-14 05:33:44,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2022-12-14 05:33:44,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:33:44,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:44,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 05:33:44,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:44,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:44,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 05:33:44,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:44,795 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 05:33:44,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-12-14 05:33:44,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 05:33:44,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:44,895 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2022-12-14 05:33:44,958 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:33:52,130 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3897#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |ULTIMATE.start_main_~i~1#1|) (exists ((v_bor_~res~0_BEFORE_RETURN_41 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_41 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_41 4294967296) (+ (- 4294967296) (mod v_bor_~res~0_BEFORE_RETURN_41 4294967296))))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 999 |ULTIMATE.start_main_~i~2#1|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:33:52,130 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:33:52,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:33:52,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 51] total 101 [2022-12-14 05:33:52,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3149063] [2022-12-14 05:33:52,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:33:52,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-12-14 05:33:52,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:33:52,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-12-14 05:33:52,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2022-12-14 05:33:52,137 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 05:33:52,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:52,265 INFO L93 Difference]: Finished difference Result 150 states and 207 transitions. [2022-12-14 05:33:52,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-12-14 05:33:52,266 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 100 [2022-12-14 05:33:52,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:52,267 INFO L225 Difference]: With dead ends: 150 [2022-12-14 05:33:52,267 INFO L226 Difference]: Without dead ends: 125 [2022-12-14 05:33:52,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2022-12-14 05:33:52,271 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:52,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:33:52,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-12-14 05:33:52,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-12-14 05:33:52,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.025) internal successors, (123), 120 states have internal predecessors, (123), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:33:52,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2022-12-14 05:33:52,281 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 100 [2022-12-14 05:33:52,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:52,281 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2022-12-14 05:33:52,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 05:33:52,282 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2022-12-14 05:33:52,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-12-14 05:33:52,283 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:52,284 INFO L195 NwaCegarLoop]: trace histogram [98, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:52,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 05:33:52,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 05:33:52,485 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:52,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:52,486 INFO L85 PathProgramCache]: Analyzing trace with hash -724654035, now seen corresponding path program 8 times [2022-12-14 05:33:52,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:33:52,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272466635] [2022-12-14 05:33:52,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:52,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:33:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-12-14 05:33:57,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:33:57,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272466635] [2022-12-14 05:33:57,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272466635] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:33:57,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814376782] [2022-12-14 05:33:57,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:33:57,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:57,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:57,612 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:57,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 05:33:57,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 05:33:57,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:33:57,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:33:57,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 246 proven. 3 refuted. 0 times theorem prover too weak. 5139 trivial. 0 not checked. [2022-12-14 05:33:57,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:57,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5385 trivial. 0 not checked. [2022-12-14 05:33:57,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814376782] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:57,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1253922216] [2022-12-14 05:33:57,945 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 05:33:57,945 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:33:57,946 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:33:57,946 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:33:57,946 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:33:57,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:57,969 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:33:57,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:33:57,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:57,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:33:57,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:57,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-12-14 05:33:58,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:58,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:58,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:58,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:58,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:58,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:58,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:58,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:58,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:58,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:58,070 INFO L321 Elim1Store]: treesize reduction 144, result has 13.3 percent of original size [2022-12-14 05:33:58,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2022-12-14 05:33:58,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:33:58,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:58,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 05:33:58,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:58,226 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:33:58,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 05:33:58,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:33:58,250 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 05:33:58,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-12-14 05:33:58,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 05:33:58,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:33:58,326 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2022-12-14 05:33:58,367 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:34:05,954 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5438#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |ULTIMATE.start_main_~i~1#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= |#NULL.offset| 0) (<= 999 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((v_bor_~res~0_BEFORE_RETURN_47 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_47 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_47 4294967296) (+ (mod v_bor_~res~0_BEFORE_RETURN_47 4294967296) (- 4294967296))))) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:34:05,955 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:34:05,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:34:05,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 5, 5] total 107 [2022-12-14 05:34:05,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801763958] [2022-12-14 05:34:05,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:34:05,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-12-14 05:34:05,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:05,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-12-14 05:34:05,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5137, Invalid=9143, Unknown=0, NotChecked=0, Total=14280 [2022-12-14 05:34:05,959 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 05:34:06,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:06,070 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2022-12-14 05:34:06,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-12-14 05:34:06,070 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 150 [2022-12-14 05:34:06,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:06,072 INFO L225 Difference]: With dead ends: 155 [2022-12-14 05:34:06,072 INFO L226 Difference]: Without dead ends: 130 [2022-12-14 05:34:06,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=5137, Invalid=9143, Unknown=0, NotChecked=0, Total=14280 [2022-12-14 05:34:06,076 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:06,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:34:06,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-12-14 05:34:06,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-12-14 05:34:06,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.024) internal successors, (128), 125 states have internal predecessors, (128), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:34:06,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2022-12-14 05:34:06,087 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 150 [2022-12-14 05:34:06,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:06,088 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2022-12-14 05:34:06,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 05:34:06,088 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2022-12-14 05:34:06,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-14 05:34:06,090 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:06,090 INFO L195 NwaCegarLoop]: trace histogram [99, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:34:06,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-14 05:34:06,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:06,291 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:06,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:06,292 INFO L85 PathProgramCache]: Analyzing trace with hash -905231741, now seen corresponding path program 9 times [2022-12-14 05:34:06,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:06,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528431656] [2022-12-14 05:34:06,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:06,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-12-14 05:34:11,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:11,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528431656] [2022-12-14 05:34:11,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528431656] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:11,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465908755] [2022-12-14 05:34:11,069 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:34:11,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:11,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:11,070 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:11,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 05:34:11,319 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:34:11,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:34:11,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 101 conjunts are in the unsatisfiable core [2022-12-14 05:34:11,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-12-14 05:34:11,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:34:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-12-14 05:34:18,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465908755] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:34:18,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2026744967] [2022-12-14 05:34:18,846 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 05:34:18,846 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:34:18,846 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:34:18,846 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:34:18,846 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:34:18,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:18,862 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:34:18,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:34:18,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:18,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:34:18,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:18,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-12-14 05:34:18,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:18,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:18,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:18,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:18,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:18,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:18,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:18,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:18,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:18,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:18,951 INFO L321 Elim1Store]: treesize reduction 144, result has 13.3 percent of original size [2022-12-14 05:34:18,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 12 case distinctions, treesize of input 294 treesize of output 275 [2022-12-14 05:34:18,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:34:19,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:19,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 05:34:19,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:19,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:34:19,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 05:34:19,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:34:19,121 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 05:34:19,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-12-14 05:34:19,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 05:34:19,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:34:19,220 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2022-12-14 05:34:19,280 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:34:22,627 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7125#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |ULTIMATE.start_main_~i~1#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= |#NULL.offset| 0) (<= 999 |ULTIMATE.start_main_~i~2#1|) (exists ((v_bor_~res~0_BEFORE_RETURN_53 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_53 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_53 4294967296) (+ (mod v_bor_~res~0_BEFORE_RETURN_53 4294967296) (- 4294967296))))) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|))' at error location [2022-12-14 05:34:22,627 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:34:22,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:34:22,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101, 102] total 203 [2022-12-14 05:34:22,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334473188] [2022-12-14 05:34:22,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:34:22,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2022-12-14 05:34:22,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:34:22,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2022-12-14 05:34:22,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20563, Invalid=25877, Unknown=0, NotChecked=0, Total=46440 [2022-12-14 05:34:22,636 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand has 203 states, 203 states have (on average 1.0689655172413792) internal successors, (217), 203 states have internal predecessors, (217), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 05:34:23,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:23,015 INFO L93 Difference]: Finished difference Result 260 states and 368 transitions. [2022-12-14 05:34:23,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-12-14 05:34:23,016 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 1.0689655172413792) internal successors, (217), 203 states have internal predecessors, (217), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 155 [2022-12-14 05:34:23,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:23,017 INFO L225 Difference]: With dead ends: 260 [2022-12-14 05:34:23,017 INFO L226 Difference]: Without dead ends: 231 [2022-12-14 05:34:23,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4331 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=20563, Invalid=25877, Unknown=0, NotChecked=0, Total=46440 [2022-12-14 05:34:23,019 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:23,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:34:23,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-12-14 05:34:23,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-12-14 05:34:23,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 226 states have (on average 1.0132743362831858) internal successors, (229), 226 states have internal predecessors, (229), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:34:23,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 235 transitions. [2022-12-14 05:34:23,027 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 235 transitions. Word has length 155 [2022-12-14 05:34:23,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:23,027 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 235 transitions. [2022-12-14 05:34:23,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 1.0689655172413792) internal successors, (217), 203 states have internal predecessors, (217), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 05:34:23,027 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 235 transitions. [2022-12-14 05:34:23,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-12-14 05:34:23,029 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:23,029 INFO L195 NwaCegarLoop]: trace histogram [200, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:34:23,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 05:34:23,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:23,231 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:23,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:23,232 INFO L85 PathProgramCache]: Analyzing trace with hash -105674387, now seen corresponding path program 10 times [2022-12-14 05:34:23,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:34:23,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328941437] [2022-12-14 05:34:23,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:23,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:34:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:40,928 INFO L134 CoverageAnalysis]: Checked inductivity of 20655 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-12-14 05:34:40,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:34:40,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328941437] [2022-12-14 05:34:40,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328941437] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:34:40,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044034236] [2022-12-14 05:34:40,929 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 05:34:40,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:40,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:40,929 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:40,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 05:34:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:41,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 2100 conjuncts, 202 conjunts are in the unsatisfiable core [2022-12-14 05:34:41,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 20655 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-12-14 05:34:41,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:35:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 20655 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-12-14 05:35:13,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044034236] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:35:13,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1200467996] [2022-12-14 05:35:13,212 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 05:35:13,212 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:35:13,213 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:35:13,213 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:35:13,213 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:35:13,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:13,231 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:35:13,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 05:35:13,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:13,250 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:35:13,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:35:13,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:13,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-12-14 05:35:13,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:13,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:13,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:13,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:13,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:13,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:13,334 INFO L321 Elim1Store]: treesize reduction 126, result has 21.7 percent of original size [2022-12-14 05:35:13,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2022-12-14 05:35:13,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:35:13,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:13,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 05:35:13,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:13,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:35:13,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 05:35:13,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:35:13,506 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 05:35:13,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-12-14 05:35:13,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 05:35:13,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:35:13,585 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2022-12-14 05:35:13,621 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:35:18,337 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10032#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |ULTIMATE.start_main_~i~1#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (<= 999 |ULTIMATE.start_main_~i~2#1|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:35:18,337 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:35:18,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:35:18,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [203, 202, 203] total 405 [2022-12-14 05:35:18,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148883337] [2022-12-14 05:35:18,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:35:18,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 405 states [2022-12-14 05:35:18,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:35:18,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 405 interpolants. [2022-12-14 05:35:18,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81870, Invalid=92436, Unknown=0, NotChecked=0, Total=174306 [2022-12-14 05:35:18,371 INFO L87 Difference]: Start difference. First operand 231 states and 235 transitions. Second operand has 405 states, 405 states have (on average 1.0345679012345679) internal successors, (419), 405 states have internal predecessors, (419), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 05:35:19,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:35:19,973 INFO L93 Difference]: Finished difference Result 462 states and 671 transitions. [2022-12-14 05:35:19,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 404 states. [2022-12-14 05:35:19,973 INFO L78 Accepts]: Start accepts. Automaton has has 405 states, 405 states have (on average 1.0345679012345679) internal successors, (419), 405 states have internal predecessors, (419), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 256 [2022-12-14 05:35:19,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:35:19,976 INFO L225 Difference]: With dead ends: 462 [2022-12-14 05:35:19,976 INFO L226 Difference]: Without dead ends: 433 [2022-12-14 05:35:19,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 969 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 416 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8674 ImplicationChecksByTransitivity, 46.4s TimeCoverageRelationStatistics Valid=81870, Invalid=92436, Unknown=0, NotChecked=0, Total=174306 [2022-12-14 05:35:19,984 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:35:19,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 05:35:19,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-12-14 05:35:19,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2022-12-14 05:35:19,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 428 states have (on average 1.0070093457943925) internal successors, (431), 428 states have internal predecessors, (431), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:35:19,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 437 transitions. [2022-12-14 05:35:19,998 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 437 transitions. Word has length 256 [2022-12-14 05:35:19,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:35:19,998 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 437 transitions. [2022-12-14 05:35:19,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 405 states, 405 states have (on average 1.0345679012345679) internal successors, (419), 405 states have internal predecessors, (419), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 05:35:19,999 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 437 transitions. [2022-12-14 05:35:20,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2022-12-14 05:35:20,005 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:35:20,005 INFO L195 NwaCegarLoop]: trace histogram [402, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:35:20,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 05:35:20,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 05:35:20,207 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:35:20,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:35:20,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1491618003, now seen corresponding path program 11 times [2022-12-14 05:35:20,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:35:20,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115393448] [2022-12-14 05:35:20,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:35:20,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:35:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:36:39,420 INFO L134 CoverageAnalysis]: Checked inductivity of 81558 backedges. 0 proven. 81003 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-12-14 05:36:39,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:36:39,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115393448] [2022-12-14 05:36:39,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115393448] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:36:39,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294849260] [2022-12-14 05:36:39,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:36:39,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:36:39,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:36:39,422 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:36:39,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 05:36:39,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 05:36:39,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:36:39,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 05:36:39,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:36:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 81558 backedges. 246 proven. 21 refuted. 0 times theorem prover too weak. 81291 trivial. 0 not checked. [2022-12-14 05:36:40,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:36:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 81558 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 81537 trivial. 0 not checked. [2022-12-14 05:36:41,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294849260] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:36:41,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1079368460] [2022-12-14 05:36:41,728 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 05:36:41,728 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:36:41,729 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:36:41,729 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:36:41,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:36:41,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,749 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:36:41,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:36:41,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:36:41,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-12-14 05:36:41,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:36:41,830 INFO L321 Elim1Store]: treesize reduction 126, result has 21.7 percent of original size [2022-12-14 05:36:41,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2022-12-14 05:36:41,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:36:41,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 05:36:41,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:36:41,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-12-14 05:36:41,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:36:41,997 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 05:36:41,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 72 [2022-12-14 05:36:42,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 05:36:42,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:36:42,082 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2022-12-14 05:36:42,125 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:36:50,411 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14973#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |ULTIMATE.start_main_~i~1#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (exists ((v_bor_~res~0_BEFORE_RETURN_65 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_65 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_65 4294967296) (+ (mod v_bor_~res~0_BEFORE_RETURN_65 4294967296) (- 4294967296))))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= |#NULL.offset| 0) (<= 999 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:36:50,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:36:50,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:36:50,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [405, 9, 9] total 419 [2022-12-14 05:36:50,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761952856] [2022-12-14 05:36:50,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:36:50,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 419 states [2022-12-14 05:36:50,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:36:50,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 419 interpolants. [2022-12-14 05:36:50,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81989, Invalid=104203, Unknown=0, NotChecked=0, Total=186192 [2022-12-14 05:36:50,433 INFO L87 Difference]: Start difference. First operand 433 states and 437 transitions. Second operand has 419 states, 419 states have (on average 1.0429594272076372) internal successors, (437), 419 states have internal predecessors, (437), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 05:36:52,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:36:52,707 INFO L93 Difference]: Finished difference Result 471 states and 487 transitions. [2022-12-14 05:36:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 419 states. [2022-12-14 05:36:52,708 INFO L78 Accepts]: Start accepts. Automaton has has 419 states, 419 states have (on average 1.0429594272076372) internal successors, (437), 419 states have internal predecessors, (437), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 458 [2022-12-14 05:36:52,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:36:52,709 INFO L225 Difference]: With dead ends: 471 [2022-12-14 05:36:52,709 INFO L226 Difference]: Without dead ends: 442 [2022-12-14 05:36:52,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1777 GetRequests, 1347 SyntacticMatches, 0 SemanticMatches, 430 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11136 ImplicationChecksByTransitivity, 53.4s TimeCoverageRelationStatistics Valid=81989, Invalid=104203, Unknown=0, NotChecked=0, Total=186192 [2022-12-14 05:36:52,717 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:36:52,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 05:36:52,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-12-14 05:36:52,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2022-12-14 05:36:52,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 437 states have (on average 1.0068649885583525) internal successors, (440), 437 states have internal predecessors, (440), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:36:52,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 446 transitions. [2022-12-14 05:36:52,730 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 446 transitions. Word has length 458 [2022-12-14 05:36:52,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:36:52,730 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 446 transitions. [2022-12-14 05:36:52,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 419 states, 419 states have (on average 1.0429594272076372) internal successors, (437), 419 states have internal predecessors, (437), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 05:36:52,731 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 446 transitions. [2022-12-14 05:36:52,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2022-12-14 05:36:52,736 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:36:52,736 INFO L195 NwaCegarLoop]: trace histogram [403, 30, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:36:52,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 05:36:52,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:36:52,938 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:36:52,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:36:52,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1184466051, now seen corresponding path program 12 times [2022-12-14 05:36:52,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:36:52,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821389264] [2022-12-14 05:36:52,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:36:52,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:36:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:38:10,033 INFO L134 CoverageAnalysis]: Checked inductivity of 82045 backedges. 0 proven. 81406 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-12-14 05:38:10,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:38:10,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821389264] [2022-12-14 05:38:10,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821389264] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:38:10,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710052075] [2022-12-14 05:38:10,033 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:38:10,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:38:10,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:38:10,034 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:38:10,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 05:38:10,713 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:38:10,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:38:10,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 3983 conjuncts, 405 conjunts are in the unsatisfiable core [2022-12-14 05:38:10,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:38:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 82045 backedges. 0 proven. 81406 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-12-14 05:38:11,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:40:25,590 INFO L134 CoverageAnalysis]: Checked inductivity of 82045 backedges. 0 proven. 81406 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-12-14 05:40:25,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710052075] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:40:25,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [550512876] [2022-12-14 05:40:25,591 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 05:40:25,591 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:40:25,591 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:40:25,591 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:40:25,591 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:40:25,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:40:25,613 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:40:25,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:40:25,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:40:25,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:40:25,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:40:25,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-12-14 05:40:25,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:40:25,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:40:25,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:40:25,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:40:25,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:40:25,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:40:25,711 INFO L321 Elim1Store]: treesize reduction 126, result has 21.7 percent of original size [2022-12-14 05:40:25,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 284 treesize of output 276 [2022-12-14 05:40:25,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:40:25,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:40:25,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 05:40:25,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:40:25,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-12-14 05:40:25,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:40:25,929 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-12-14 05:40:25,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 80 [2022-12-14 05:40:25,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-12-14 05:40:25,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:40:26,039 INFO L197 IcfgInterpreter]: Interpreting procedure bor with input of size 12 for LOIs [2022-12-14 05:40:26,079 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:40:32,062 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20396#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= 1000 |ULTIMATE.start_main_~i~1#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 3996 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 999 |ULTIMATE.start_main_~i~2#1|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((v_bor_~res~0_BEFORE_RETURN_72 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_bor_~res~0_BEFORE_RETURN_72 4294967296) 2147483647) (mod v_bor_~res~0_BEFORE_RETURN_72 4294967296) (+ (mod v_bor_~res~0_BEFORE_RETURN_72 4294967296) (- 4294967296))))) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (or (not (= |ULTIMATE.start_main_~ret5~0#1| |ULTIMATE.start_main_~ret~0#1|)) (not (= |ULTIMATE.start_main_~ret2~0#1| |ULTIMATE.start_main_~ret~0#1|))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 05:40:32,062 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:40:32,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:40:32,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [406, 405, 406] total 811 [2022-12-14 05:40:32,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157070245] [2022-12-14 05:40:32,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:40:32,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 811 states [2022-12-14 05:40:32,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:40:32,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 811 interpolants. [2022-12-14 05:40:32,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328515, Invalid=349637, Unknown=0, NotChecked=0, Total=678152 [2022-12-14 05:40:32,171 INFO L87 Difference]: Start difference. First operand 442 states and 446 transitions. Second operand has 811 states, 811 states have (on average 1.0172626387176325) internal successors, (825), 811 states have internal predecessors, (825), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 05:40:45,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:40:45,610 INFO L93 Difference]: Finished difference Result 884 states and 1296 transitions. [2022-12-14 05:40:45,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 810 states. [2022-12-14 05:40:45,611 INFO L78 Accepts]: Start accepts. Automaton has has 811 states, 811 states have (on average 1.0172626387176325) internal successors, (825), 811 states have internal predecessors, (825), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 467 [2022-12-14 05:40:45,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:40:45,613 INFO L225 Difference]: With dead ends: 884 [2022-12-14 05:40:45,613 INFO L226 Difference]: Without dead ends: 847 [2022-12-14 05:40:45,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1805 GetRequests, 983 SyntacticMatches, 0 SemanticMatches, 822 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17403 ImplicationChecksByTransitivity, 182.0s TimeCoverageRelationStatistics Valid=328515, Invalid=349637, Unknown=0, NotChecked=0, Total=678152 [2022-12-14 05:40:45,644 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:40:45,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 05:40:45,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-12-14 05:40:45,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2022-12-14 05:40:45,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 842 states have (on average 1.003562945368171) internal successors, (845), 842 states have internal predecessors, (845), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 05:40:45,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 851 transitions. [2022-12-14 05:40:45,664 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 851 transitions. Word has length 467 [2022-12-14 05:40:45,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:40:45,664 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 851 transitions. [2022-12-14 05:40:45,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 811 states, 811 states have (on average 1.0172626387176325) internal successors, (825), 811 states have internal predecessors, (825), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-14 05:40:45,665 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 851 transitions. [2022-12-14 05:40:45,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2022-12-14 05:40:45,670 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:40:45,670 INFO L195 NwaCegarLoop]: trace histogram [808, 30, 14, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:40:45,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 05:40:45,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f03a64-c1b6-477d-b1c8-02ece02c6dcb/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 05:40:45,872 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:40:45,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:40:45,873 INFO L85 PathProgramCache]: Analyzing trace with hash 846129005, now seen corresponding path program 13 times [2022-12-14 05:40:45,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:40:45,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738735054] [2022-12-14 05:40:45,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:40:45,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:40:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat