./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/add-3-n-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/add-3-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur --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 efbd812580893a7521723358e51d4f43c4b930b57b026212f5a7d5f447f3e0f8 --- 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-38b53e6 [2022-11-25 23:16:19,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:16:19,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:16:19,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:16:19,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:16:19,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:16:19,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:16:20,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:16:20,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:16:20,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:16:20,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:16:20,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:16:20,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:16:20,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:16:20,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:16:20,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:16:20,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:16:20,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:16:20,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:16:20,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:16:20,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:16:20,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:16:20,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:16:20,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:16:20,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:16:20,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:16:20,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:16:20,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:16:20,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:16:20,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:16:20,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:16:20,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:16:20,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:16:20,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:16:20,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:16:20,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:16:20,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:16:20,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:16:20,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:16:20,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:16:20,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:16:20,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:16:20,117 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:16:20,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:16:20,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:16:20,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:16:20,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:16:20,124 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:16:20,124 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:16:20,124 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:16:20,124 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:16:20,125 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:16:20,126 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:16:20,126 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:16:20,126 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:16:20,127 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:16:20,127 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:16:20,127 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:16:20,127 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:16:20,128 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:16:20,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:16:20,129 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:16:20,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:16:20,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:16:20,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:16:20,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:16:20,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:16:20,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:16:20,131 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:16:20,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:16:20,131 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:16:20,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:16:20,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:16:20,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:16:20,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:16:20,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:16:20,133 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:16:20,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:16:20,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:16:20,134 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:16:20,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:16:20,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:16:20,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:16:20,135 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_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efbd812580893a7521723358e51d4f43c4b930b57b026212f5a7d5f447f3e0f8 [2022-11-25 23:16:20,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:16:20,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:16:20,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:16:20,460 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:16:20,461 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:16:20,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/array-multidimensional/add-3-n-u.c [2022-11-25 23:16:23,630 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:16:23,818 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:16:23,820 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/sv-benchmarks/c/array-multidimensional/add-3-n-u.c [2022-11-25 23:16:23,827 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/data/dabbaf6fe/82afd2ee80fc4a7d84c77ef73a1cefeb/FLAG85af976cc [2022-11-25 23:16:23,841 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/data/dabbaf6fe/82afd2ee80fc4a7d84c77ef73a1cefeb [2022-11-25 23:16:23,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:16:23,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:16:23,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:16:23,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:16:23,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:16:23,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:16:23" (1/1) ... [2022-11-25 23:16:23,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e964ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:23, skipping insertion in model container [2022-11-25 23:16:23,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:16:23" (1/1) ... [2022-11-25 23:16:23,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:16:23,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:16:24,046 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_121adf6e-02c0-4757-87c9-ef9f4a3f926f/sv-benchmarks/c/array-multidimensional/add-3-n-u.c[321,334] [2022-11-25 23:16:24,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:16:24,081 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:16:24,094 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_121adf6e-02c0-4757-87c9-ef9f4a3f926f/sv-benchmarks/c/array-multidimensional/add-3-n-u.c[321,334] [2022-11-25 23:16:24,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:16:24,130 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:16:24,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:24 WrapperNode [2022-11-25 23:16:24,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:16:24,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:16:24,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:16:24,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:16:24,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:24" (1/1) ... [2022-11-25 23:16:24,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:24" (1/1) ... [2022-11-25 23:16:24,169 INFO L138 Inliner]: procedures = 14, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 118 [2022-11-25 23:16:24,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:16:24,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:16:24,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:16:24,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:16:24,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:24" (1/1) ... [2022-11-25 23:16:24,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:24" (1/1) ... [2022-11-25 23:16:24,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:24" (1/1) ... [2022-11-25 23:16:24,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:24" (1/1) ... [2022-11-25 23:16:24,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:24" (1/1) ... [2022-11-25 23:16:24,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:24" (1/1) ... [2022-11-25 23:16:24,200 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:24" (1/1) ... [2022-11-25 23:16:24,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:24" (1/1) ... [2022-11-25 23:16:24,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:16:24,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:16:24,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:16:24,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:16:24,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:24" (1/1) ... [2022-11-25 23:16:24,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:16:24,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:16:24,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:16:24,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:16:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:16:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:16:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:16:24,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:16:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:16:24,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:16:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:16:24,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:16:24,397 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:16:24,400 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:16:24,642 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:16:24,688 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:16:24,695 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-25 23:16:24,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:16:24 BoogieIcfgContainer [2022-11-25 23:16:24,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:16:24,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:16:24,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:16:24,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:16:24,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:16:23" (1/3) ... [2022-11-25 23:16:24,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e6c972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:16:24, skipping insertion in model container [2022-11-25 23:16:24,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:16:24" (2/3) ... [2022-11-25 23:16:24,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e6c972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:16:24, skipping insertion in model container [2022-11-25 23:16:24,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:16:24" (3/3) ... [2022-11-25 23:16:24,710 INFO L112 eAbstractionObserver]: Analyzing ICFG add-3-n-u.c [2022-11-25 23:16:24,746 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:16:24,746 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:16:24,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:16:24,825 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;@3a0e77cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:16:24,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:16:24,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:24,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:16:24,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:24,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:16:24,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:24,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:24,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1242475547, now seen corresponding path program 1 times [2022-11-25 23:16:24,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:24,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546885536] [2022-11-25 23:16:24,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:24,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:25,042 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:16:25,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802967708] [2022-11-25 23:16:25,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:25,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:25,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:16:25,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:16:25,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:16:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:25,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:16:25,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:16:25,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:16:25,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:16:25,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:25,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546885536] [2022-11-25 23:16:25,299 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:16:25,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802967708] [2022-11-25 23:16:25,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802967708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:16:25,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:16:25,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:16:25,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730712138] [2022-11-25 23:16:25,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:16:25,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:16:25,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:25,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:16:25,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:16:25,379 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:25,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:25,457 INFO L93 Difference]: Finished difference Result 29 states and 47 transitions. [2022-11-25 23:16:25,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:16:25,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 23:16:25,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:25,468 INFO L225 Difference]: With dead ends: 29 [2022-11-25 23:16:25,468 INFO L226 Difference]: Without dead ends: 17 [2022-11-25 23:16:25,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:16:25,475 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:25,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:16:25,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-25 23:16:25,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-25 23:16:25,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:25,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2022-11-25 23:16:25,514 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 23 transitions. Word has length 8 [2022-11-25 23:16:25,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:25,515 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 23 transitions. [2022-11-25 23:16:25,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 23 transitions. [2022-11-25 23:16:25,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 23:16:25,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:25,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:16:25,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:16:25,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:25,724 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:25,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:25,725 INFO L85 PathProgramCache]: Analyzing trace with hash 103004432, now seen corresponding path program 1 times [2022-11-25 23:16:25,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:25,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337120017] [2022-11-25 23:16:25,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:25,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:25,741 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:16:25,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995827110] [2022-11-25 23:16:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:25,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:25,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:16:25,746 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:16:25,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:16:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:25,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:16:25,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:16:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:16:25,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:16:25,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:25,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337120017] [2022-11-25 23:16:25,850 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:16:25,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995827110] [2022-11-25 23:16:25,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995827110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:16:25,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:16:25,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:16:25,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253059231] [2022-11-25 23:16:25,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:16:25,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:16:25,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:25,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:16:25,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:16:25,853 INFO L87 Difference]: Start difference. First operand 15 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:25,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:25,926 INFO L93 Difference]: Finished difference Result 40 states and 63 transitions. [2022-11-25 23:16:25,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:16:25,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 23:16:25,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:25,927 INFO L225 Difference]: With dead ends: 40 [2022-11-25 23:16:25,927 INFO L226 Difference]: Without dead ends: 27 [2022-11-25 23:16:25,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:16:25,929 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 46 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:25,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 11 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:16:25,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-25 23:16:25,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 18. [2022-11-25 23:16:25,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:25,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2022-11-25 23:16:25,936 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 26 transitions. Word has length 10 [2022-11-25 23:16:25,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:25,937 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 26 transitions. [2022-11-25 23:16:25,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:25,937 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 26 transitions. [2022-11-25 23:16:25,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 23:16:25,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:25,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:16:25,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:16:26,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-25 23:16:26,144 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:26,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:26,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1848574842, now seen corresponding path program 1 times [2022-11-25 23:16:26,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:26,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844003641] [2022-11-25 23:16:26,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:26,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:26,166 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:16:26,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833954556] [2022-11-25 23:16:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:26,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:26,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:16:26,176 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:16:26,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:16:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:26,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:16:26,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:16:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:16:26,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:16:26,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:26,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844003641] [2022-11-25 23:16:26,313 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:16:26,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833954556] [2022-11-25 23:16:26,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833954556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:16:26,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:16:26,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:16:26,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995933977] [2022-11-25 23:16:26,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:16:26,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:16:26,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:26,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:16:26,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:16:26,317 INFO L87 Difference]: Start difference. First operand 18 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:26,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:26,402 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2022-11-25 23:16:26,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:16:26,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-25 23:16:26,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:26,404 INFO L225 Difference]: With dead ends: 43 [2022-11-25 23:16:26,404 INFO L226 Difference]: Without dead ends: 27 [2022-11-25 23:16:26,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:16:26,408 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:26,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 12 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:16:26,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-25 23:16:26,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2022-11-25 23:16:26,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:26,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2022-11-25 23:16:26,434 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 12 [2022-11-25 23:16:26,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:26,434 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2022-11-25 23:16:26,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:26,435 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2022-11-25 23:16:26,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 23:16:26,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:26,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:16:26,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:16:26,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:26,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:26,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:26,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2114319717, now seen corresponding path program 1 times [2022-11-25 23:16:26,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:26,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5912544] [2022-11-25 23:16:26,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:26,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:26,665 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:16:26,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210517901] [2022-11-25 23:16:26,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:26,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:26,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:16:26,667 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:16:26,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:16:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:26,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:16:26,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:16:26,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:16:26,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:16:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:16:26,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:26,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5912544] [2022-11-25 23:16:26,854 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:16:26,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210517901] [2022-11-25 23:16:26,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210517901] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:16:26,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1297946841] [2022-11-25 23:16:26,874 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-25 23:16:26,874 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:16:26,880 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:16:26,886 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:16:26,887 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:16:26,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:26,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:26,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:27,112 INFO L321 Elim1Store]: treesize reduction 185, result has 22.9 percent of original size [2022-11-25 23:16:27,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 81 [2022-11-25 23:16:27,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:27,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:27,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:27,348 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-11-25 23:16:27,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-11-25 23:16:27,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:27,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:27,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 69 [2022-11-25 23:16:27,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:27,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:27,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:27,864 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-11-25 23:16:27,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-11-25 23:16:28,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:28,095 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:28,095 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:28,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:28,318 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:28,318 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:28,385 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:28,401 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:28,404 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:28,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:28,485 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:28,485 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:28,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:28,635 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:28,636 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:28,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:28,691 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:28,692 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:28,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:28,861 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:28,862 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:28,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:28,913 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:28,914 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:28,920 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:16:29,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1297946841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:16:29,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:16:29,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 10 [2022-11-25 23:16:29,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865343202] [2022-11-25 23:16:29,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:16:29,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:16:29,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:29,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:16:29,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-11-25 23:16:29,165 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:29,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:29,283 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2022-11-25 23:16:29,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:16:29,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-25 23:16:29,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:29,284 INFO L225 Difference]: With dead ends: 42 [2022-11-25 23:16:29,284 INFO L226 Difference]: Without dead ends: 33 [2022-11-25 23:16:29,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-11-25 23:16:29,286 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:29,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 6 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:16:29,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-25 23:16:29,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2022-11-25 23:16:29,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2022-11-25 23:16:29,301 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 13 [2022-11-25 23:16:29,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:29,302 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2022-11-25 23:16:29,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:29,302 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2022-11-25 23:16:29,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-25 23:16:29,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:29,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:16:29,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:16:29,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:29,510 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:29,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:29,510 INFO L85 PathProgramCache]: Analyzing trace with hash -475134270, now seen corresponding path program 1 times [2022-11-25 23:16:29,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:29,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516388083] [2022-11-25 23:16:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:29,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:29,525 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:16:29,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004056255] [2022-11-25 23:16:29,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:29,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:29,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:16:29,527 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:16:29,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:16:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:16:29,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:16:29,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:16:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:16:29,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:16:29,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:16:29,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:29,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516388083] [2022-11-25 23:16:29,679 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:16:29,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004056255] [2022-11-25 23:16:29,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004056255] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:16:29,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1750391874] [2022-11-25 23:16:29,682 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-25 23:16:29,683 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:16:29,683 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:16:29,683 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:16:29,684 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:16:29,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:29,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:29,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:29,847 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-11-25 23:16:29,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-11-25 23:16:29,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:29,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:29,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:29,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-11-25 23:16:29,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:29,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:29,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 61 [2022-11-25 23:16:30,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:30,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:30,122 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:30,158 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-11-25 23:16:30,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-11-25 23:16:30,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:30,303 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:30,304 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:30,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:30,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:30,506 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:30,548 INFO L321 Elim1Store]: treesize reduction 158, result has 18.6 percent of original size [2022-11-25 23:16:30,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 305 treesize of output 285 [2022-11-25 23:16:30,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:30,664 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:30,665 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:30,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:30,758 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:16:30,759 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:16:30,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:30,832 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:30,832 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:30,949 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:30,964 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:30,964 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:31,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:31,030 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:31,030 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:31,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:31,101 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:31,102 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:31,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:31,161 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:31,161 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:31,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:31,225 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:31,226 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:31,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:31,294 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:31,295 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:31,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:31,412 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:16:31,412 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:16:31,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:31,454 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:31,454 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:31,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:31,540 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:16:31,540 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:16:31,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:31,605 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:31,605 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:31,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:31,651 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:31,652 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:31,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:31,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:31,790 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-25 23:16:31,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-25 23:16:31,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:31,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:31,901 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:16:31,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:16:32,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:32,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:32,128 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:16:32,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:16:32,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:32,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:32,234 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:16:32,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:16:32,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:32,358 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:32,401 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:16:32,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:16:32,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:32,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:32,542 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:16:32,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:16:32,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:32,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:32,711 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:16:32,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:16:32,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:32,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:32,858 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:16:32,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:16:33,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:33,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:33,059 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:16:33,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:16:33,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:33,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:33,174 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:16:33,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:16:33,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:33,273 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:16:33,274 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:16:33,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:33,316 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:33,317 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:33,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:33,408 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:33,409 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:33,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:33,471 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:33,472 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:33,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:33,511 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:33,511 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:33,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:33,582 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:16:33,582 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:16:33,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:33,639 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:33,640 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:33,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:33,686 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:33,686 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:33,693 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:16:34,623 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '708#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)))))) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-11-25 23:16:34,623 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:16:34,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:16:34,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-25 23:16:34,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873869751] [2022-11-25 23:16:34,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 23:16:34,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:16:34,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:34,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:16:34,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:16:34,625 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:34,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:34,766 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2022-11-25 23:16:34,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:16:34,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-25 23:16:34,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:34,768 INFO L225 Difference]: With dead ends: 64 [2022-11-25 23:16:34,768 INFO L226 Difference]: Without dead ends: 44 [2022-11-25 23:16:34,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:16:34,769 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 50 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:34,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 18 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:16:34,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-25 23:16:34,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-11-25 23:16:34,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:34,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-11-25 23:16:34,785 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 18 [2022-11-25 23:16:34,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:34,785 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-11-25 23:16:34,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:34,785 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-11-25 23:16:34,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-25 23:16:34,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:34,786 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:16:34,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 23:16:34,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:34,999 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:35,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:35,000 INFO L85 PathProgramCache]: Analyzing trace with hash 795485591, now seen corresponding path program 2 times [2022-11-25 23:16:35,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:35,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115084116] [2022-11-25 23:16:35,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:35,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:35,075 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:16:35,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837570186] [2022-11-25 23:16:35,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:16:35,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:35,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:16:35,078 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:16:35,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 23:16:35,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 23:16:35,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:16:35,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:16:35,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:16:35,240 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-25 23:16:35,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:16:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-25 23:16:35,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:16:35,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115084116] [2022-11-25 23:16:35,282 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:16:35,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837570186] [2022-11-25 23:16:35,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837570186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:16:35,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [45101378] [2022-11-25 23:16:35,285 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-25 23:16:35,285 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:16:35,286 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:16:35,286 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:16:35,286 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:16:35,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:35,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:35,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:35,431 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-11-25 23:16:35,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-11-25 23:16:35,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:35,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:35,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:35,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-11-25 23:16:35,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:35,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:35,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 69 [2022-11-25 23:16:35,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:35,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:16:35,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:35,703 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-11-25 23:16:35,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-11-25 23:16:35,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:35,830 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:35,831 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:35,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:35,931 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:16:35,931 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:16:35,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:35,978 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:35,979 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:36,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:36,107 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:16:36,107 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:16:36,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:36,170 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:36,170 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:36,214 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:36,227 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:36,227 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:36,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:36,304 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:36,304 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:36,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:36,364 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:36,365 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:36,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:36,405 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:36,405 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:36,487 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:36,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:36,530 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-25 23:16:36,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-25 23:16:36,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:36,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:36,631 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:16:36,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:16:36,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:36,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:36,819 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-25 23:16:36,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-25 23:16:36,886 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:36,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:36,932 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:16:36,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:16:37,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:37,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:37,072 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-25 23:16:37,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-25 23:16:37,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:37,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:37,181 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:16:37,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:16:37,288 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:37,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:37,334 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-25 23:16:37,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-25 23:16:37,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:37,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:37,433 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:16:37,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:16:37,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:37,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:37,603 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:16:37,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:16:37,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:37,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:37,706 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:16:37,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:16:37,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:37,820 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:37,820 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:37,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:37,865 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:37,865 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:37,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:37,953 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:16:37,954 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:16:37,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:38,006 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:38,006 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:38,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:38,050 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:38,051 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:38,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:38,123 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:16:38,124 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:16:38,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:38,177 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:38,178 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:38,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:16:38,215 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:16:38,215 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:16:38,223 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:16:39,125 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1044#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)))))) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-11-25 23:16:39,125 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:16:39,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:16:39,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-25 23:16:39,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614092036] [2022-11-25 23:16:39,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 23:16:39,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:16:39,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:16:39,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:16:39,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:16:39,128 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:39,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:16:39,327 INFO L93 Difference]: Finished difference Result 167 states and 219 transitions. [2022-11-25 23:16:39,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:16:39,328 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-25 23:16:39,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:16:39,330 INFO L225 Difference]: With dead ends: 167 [2022-11-25 23:16:39,330 INFO L226 Difference]: Without dead ends: 140 [2022-11-25 23:16:39,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:16:39,332 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 100 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:16:39,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 28 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:16:39,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-25 23:16:39,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 85. [2022-11-25 23:16:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2857142857142858) internal successors, (108), 84 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 108 transitions. [2022-11-25 23:16:39,366 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 108 transitions. Word has length 24 [2022-11-25 23:16:39,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:16:39,367 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 108 transitions. [2022-11-25 23:16:39,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:16:39,367 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 108 transitions. [2022-11-25 23:16:39,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-25 23:16:39,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:16:39,369 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:16:39,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 23:16:39,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 23:16:39,576 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:16:39,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:16:39,577 INFO L85 PathProgramCache]: Analyzing trace with hash 2031543819, now seen corresponding path program 3 times [2022-11-25 23:16:39,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:16:39,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619397568] [2022-11-25 23:16:39,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:16:39,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:16:39,614 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:16:39,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991547184] [2022-11-25 23:16:39,615 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:16:39,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:16:39,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:16:39,616 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:16:39,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 23:27:28,119 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:27:28,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:27:28,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 23:27:28,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:27:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 151 proven. 1 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-11-25 23:27:28,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:27:28,349 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 122 proven. 30 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-11-25 23:27:28,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:27:28,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619397568] [2022-11-25 23:27:28,350 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:27:28,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991547184] [2022-11-25 23:27:28,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991547184] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:27:28,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [525345180] [2022-11-25 23:27:28,354 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-25 23:27:28,354 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:27:28,354 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:27:28,355 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:27:28,355 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:27:28,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:28,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:28,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:28,512 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-11-25 23:27:28,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-11-25 23:27:28,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:28,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:28,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:28,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-11-25 23:27:28,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:28,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:28,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 69 [2022-11-25 23:27:28,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:28,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:28,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:28,785 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-11-25 23:27:28,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-11-25 23:27:28,894 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:28,908 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:28,909 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:28,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:29,011 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:27:29,011 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:27:29,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:29,058 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:29,058 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:29,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:29,196 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:29,196 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:29,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:29,243 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:29,244 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:29,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:29,316 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:27:29,316 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:27:29,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:29,377 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:29,377 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:29,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:29,421 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:29,422 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:29,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:29,510 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:27:29,511 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:27:29,551 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:29,565 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:29,565 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:29,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:29,613 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:29,613 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:29,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:29,684 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:27:29,685 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:27:29,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:29,763 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:29,763 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:29,793 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:29,809 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:29,809 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:29,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:29,878 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:29,879 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:29,913 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:29,927 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:29,927 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:29,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:29,973 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:29,973 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:30,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:30,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:30,074 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-25 23:27:30,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-25 23:27:30,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:30,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:30,183 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:27:30,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:27:30,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:30,331 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:30,373 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-25 23:27:30,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-25 23:27:30,419 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:30,419 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:30,458 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:27:30,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:27:30,555 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:30,556 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:30,595 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-25 23:27:30,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-25 23:27:30,643 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:30,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:30,683 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:27:30,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:27:30,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:30,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:30,816 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-25 23:27:30,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-25 23:27:30,864 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:30,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:30,914 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:27:30,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:27:31,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:31,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:31,079 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:27:31,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:27:31,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:31,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:31,179 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:27:31,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:27:31,195 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:27:32,162 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1955#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)))))) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-11-25 23:27:32,163 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:27:32,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:27:32,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-25 23:27:32,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638849922] [2022-11-25 23:27:32,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 23:27:32,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:27:32,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:27:32,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:27:32,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:27:32,165 INFO L87 Difference]: Start difference. First operand 85 states and 108 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:27:32,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:27:32,388 INFO L93 Difference]: Finished difference Result 354 states and 461 transitions. [2022-11-25 23:27:32,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:27:32,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-25 23:27:32,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:27:32,390 INFO L225 Difference]: With dead ends: 354 [2022-11-25 23:27:32,390 INFO L226 Difference]: Without dead ends: 278 [2022-11-25 23:27:32,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 186 SyntacticMatches, 15 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:27:32,392 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 152 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:27:32,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 19 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:27:32,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-25 23:27:32,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 271. [2022-11-25 23:27:32,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.2333333333333334) internal successors, (333), 270 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:27:32,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 333 transitions. [2022-11-25 23:27:32,486 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 333 transitions. Word has length 72 [2022-11-25 23:27:32,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:27:32,486 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 333 transitions. [2022-11-25 23:27:32,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:27:32,487 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 333 transitions. [2022-11-25 23:27:32,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-25 23:27:32,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:27:32,492 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 16, 16, 16, 16, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:27:32,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 23:27:32,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 23:27:32,719 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:27:32,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:27:32,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1546414407, now seen corresponding path program 4 times [2022-11-25 23:27:32,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:27:32,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38639678] [2022-11-25 23:27:32,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:27:32,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:27:32,823 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:27:32,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052859656] [2022-11-25 23:27:32,823 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 23:27:32,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:27:32,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:27:32,828 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:27:32,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 23:27:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:27:33,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 23:27:33,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:27:33,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6720 backedges. 398 proven. 10 refuted. 0 times theorem prover too weak. 6312 trivial. 0 not checked. [2022-11-25 23:27:33,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:27:33,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6720 backedges. 398 proven. 10 refuted. 0 times theorem prover too weak. 6312 trivial. 0 not checked. [2022-11-25 23:27:33,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:27:33,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38639678] [2022-11-25 23:27:33,508 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:27:33,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052859656] [2022-11-25 23:27:33,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052859656] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:27:33,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [457264487] [2022-11-25 23:27:33,511 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-25 23:27:33,511 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:27:33,511 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:27:33,511 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:27:33,512 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:27:33,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:33,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:33,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:33,657 INFO L321 Elim1Store]: treesize reduction 190, result has 19.1 percent of original size [2022-11-25 23:27:33,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 60 treesize of output 93 [2022-11-25 23:27:33,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:33,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:33,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:33,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 18 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-11-25 23:27:33,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:33,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:33,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 61 [2022-11-25 23:27:33,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:33,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:33,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:33,910 INFO L321 Elim1Store]: treesize reduction 162, result has 16.5 percent of original size [2022-11-25 23:27:33,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 480 treesize of output 448 [2022-11-25 23:27:34,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:34,017 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:34,018 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:34,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:34,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:27:34,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:34,204 INFO L321 Elim1Store]: treesize reduction 158, result has 18.6 percent of original size [2022-11-25 23:27:34,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 305 treesize of output 285 [2022-11-25 23:27:34,284 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:34,298 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:34,299 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:34,360 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:34,373 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:34,373 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:34,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:34,441 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:34,441 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:34,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:34,482 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:34,482 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:34,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:34,584 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:27:34,584 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:27:34,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:34,633 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:34,634 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:34,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:34,741 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:34,742 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:34,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:34,787 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:34,787 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:34,837 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:34,850 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:27:34,850 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:27:34,882 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:34,900 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:34,901 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:34,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:34,954 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:27:34,955 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:27:34,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,007 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:35,008 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:35,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,046 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:35,046 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:35,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,132 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:35,132 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:35,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,170 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:35,170 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:35,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,208 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:27:35,208 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:27:35,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,287 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:35,287 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:35,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,325 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:35,325 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:35,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,375 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:27:35,375 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:27:35,418 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,432 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:35,432 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:35,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,481 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:35,481 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:35,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,547 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:27:35,547 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:27:35,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,596 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:35,596 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:35,636 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,649 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:27:35,649 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:27:35,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,697 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:35,697 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:35,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,740 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:35,740 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:35,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,779 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2022-11-25 23:27:35,779 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 1 case distinctions, treesize of input 66 treesize of output 45 [2022-11-25 23:27:35,817 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,832 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:35,832 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:35,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,892 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 23:27:35,892 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 1 case distinctions, treesize of input 78 treesize of output 53 [2022-11-25 23:27:35,919 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:35,958 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:27:35,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:27:36,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:36,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:36,051 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:27:36,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:27:36,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:36,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:36,222 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-25 23:27:36,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-25 23:27:36,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:36,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:36,306 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:27:36,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:27:36,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:36,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:36,453 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:27:36,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:27:36,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:36,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:36,545 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:27:36,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:27:36,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:36,643 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:36,688 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:27:36,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:27:36,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:36,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:36,789 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:27:36,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:27:36,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:36,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:36,972 INFO L321 Elim1Store]: treesize reduction 54, result has 51.4 percent of original size [2022-11-25 23:27:36,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 79 [2022-11-25 23:27:37,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:37,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:27:37,055 INFO L321 Elim1Store]: treesize reduction 62, result has 51.2 percent of original size [2022-11-25 23:27:37,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 91 [2022-11-25 23:27:37,070 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:27:38,067 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4470#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~m~0#1| 1000) (= |ULTIMATE.start_main_~#C~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#A~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#C~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem10#1|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#B~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)))))) (= (ite (= (mod |ULTIMATE.start_main_#t~mem10#1| 4294967296) (mod (+ |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem8#1|) 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_~p~0#1| 1800) (= |ULTIMATE.start_main_~#A~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) (* |ULTIMATE.start_main_~j~0#1| (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))))) |ULTIMATE.start_main_#t~mem8#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#B~0#1.base|) (= |ULTIMATE.start_main_~j~0#1| 0) (= |ULTIMATE.start_main_~#B~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#C~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~n~0#1| 1500) (= |#NULL.base| 0))' at error location [2022-11-25 23:27:38,068 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:27:38,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:27:38,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-25 23:27:38,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305830115] [2022-11-25 23:27:38,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 23:27:38,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 23:27:38,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:27:38,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 23:27:38,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2022-11-25 23:27:38,070 INFO L87 Difference]: Start difference. First operand 271 states and 333 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:27:38,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:27:38,504 INFO L93 Difference]: Finished difference Result 817 states and 1171 transitions. [2022-11-25 23:27:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 23:27:38,504 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2022-11-25 23:27:38,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:27:38,507 INFO L225 Difference]: With dead ends: 817 [2022-11-25 23:27:38,507 INFO L226 Difference]: Without dead ends: 554 [2022-11-25 23:27:38,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 600 SyntacticMatches, 27 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=244, Invalid=406, Unknown=0, NotChecked=0, Total=650 [2022-11-25 23:27:38,509 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 153 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:27:38,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 36 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:27:38,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-11-25 23:27:38,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 535. [2022-11-25 23:27:38,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 534 states have (on average 1.1629213483146068) internal successors, (621), 534 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:27:38,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 621 transitions. [2022-11-25 23:27:38,651 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 621 transitions. Word has length 216 [2022-11-25 23:27:38,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:27:38,651 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 621 transitions. [2022-11-25 23:27:38,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:27:38,652 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 621 transitions. [2022-11-25 23:27:38,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-11-25 23:27:38,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:27:38,663 INFO L195 NwaCegarLoop]: trace histogram [160, 160, 16, 16, 16, 16, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:27:38,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 23:27:38,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-25 23:27:38,878 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:27:38,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:27:38,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1138692935, now seen corresponding path program 5 times [2022-11-25 23:27:38,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:27:38,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520638072] [2022-11-25 23:27:38,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:27:38,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:27:39,067 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:27:39,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769755413] [2022-11-25 23:27:39,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:27:39,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:27:39,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:27:39,069 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:27:39,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121adf6e-02c0-4757-87c9-ef9f4a3f926f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process