./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_copy8_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_copy8_ground-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b0c6415972065c9ff43b5856efb761d681539c8118849d13a6e5409704b87c70 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 07:13:06,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:13:06,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:13:06,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:13:06,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:13:06,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:13:06,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:13:06,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:13:06,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:13:06,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:13:06,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:13:06,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:13:06,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:13:06,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:13:06,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:13:06,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:13:06,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:13:06,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:13:06,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:13:06,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:13:06,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:13:06,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:13:06,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:13:06,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:13:06,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:13:06,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:13:06,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:13:06,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:13:06,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:13:06,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:13:06,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:13:06,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:13:06,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:13:06,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:13:06,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:13:06,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:13:06,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:13:06,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:13:06,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:13:06,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:13:06,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:13:06,120 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 07:13:06,140 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:13:06,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:13:06,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:13:06,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:13:06,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:13:06,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:13:06,142 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:13:06,143 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:13:06,143 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:13:06,143 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:13:06,143 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:13:06,143 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:13:06,143 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:13:06,144 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:13:06,144 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:13:06,144 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:13:06,144 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:13:06,144 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:13:06,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:13:06,145 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 07:13:06,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:13:06,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 07:13:06,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:13:06,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:13:06,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:13:06,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:13:06,147 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 07:13:06,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:13:06,147 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:13:06,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:13:06,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:13:06,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:13:06,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:13:06,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:13:06,148 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:13:06,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:13:06,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:13:06,149 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:13:06,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:13:06,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:13:06,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:13:06,150 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_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0c6415972065c9ff43b5856efb761d681539c8118849d13a6e5409704b87c70 [2022-12-14 07:13:06,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:13:06,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:13:06,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:13:06,388 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:13:06,388 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:13:06,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-examples/standard_copy8_ground-1.i [2022-12-14 07:13:08,928 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:13:09,056 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:13:09,057 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/sv-benchmarks/c/array-examples/standard_copy8_ground-1.i [2022-12-14 07:13:09,061 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/data/b4eb0b673/1cb9fa2726b14720b45fda340287cc64/FLAG401b2747c [2022-12-14 07:13:09,072 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/data/b4eb0b673/1cb9fa2726b14720b45fda340287cc64 [2022-12-14 07:13:09,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:13:09,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:13:09,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:13:09,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:13:09,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:13:09,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:13:09" (1/1) ... [2022-12-14 07:13:09,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6348c342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:13:09, skipping insertion in model container [2022-12-14 07:13:09,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:13:09" (1/1) ... [2022-12-14 07:13:09,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:13:09,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:13:09,205 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_8d72ff4d-af7f-4a44-9215-5433077e6819/sv-benchmarks/c/array-examples/standard_copy8_ground-1.i[816,829] [2022-12-14 07:13:09,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:13:09,227 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:13:09,236 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_8d72ff4d-af7f-4a44-9215-5433077e6819/sv-benchmarks/c/array-examples/standard_copy8_ground-1.i[816,829] [2022-12-14 07:13:09,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:13:09,255 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:13:09,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:13:09 WrapperNode [2022-12-14 07:13:09,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:13:09,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:13:09,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:13:09,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:13:09,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:13:09" (1/1) ... [2022-12-14 07:13:09,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:13:09" (1/1) ... [2022-12-14 07:13:09,284 INFO L138 Inliner]: procedures = 16, calls = 53, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 176 [2022-12-14 07:13:09,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:13:09,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:13:09,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:13:09,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:13:09,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:13:09" (1/1) ... [2022-12-14 07:13:09,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:13:09" (1/1) ... [2022-12-14 07:13:09,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:13:09" (1/1) ... [2022-12-14 07:13:09,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:13:09" (1/1) ... [2022-12-14 07:13:09,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:13:09" (1/1) ... [2022-12-14 07:13:09,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:13:09" (1/1) ... [2022-12-14 07:13:09,304 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:13:09" (1/1) ... [2022-12-14 07:13:09,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:13:09" (1/1) ... [2022-12-14 07:13:09,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:13:09,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:13:09,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:13:09,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:13:09,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:13:09" (1/1) ... [2022-12-14 07:13:09,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:13:09,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:13:09,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:13:09,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:13:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:13:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:13:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 07:13:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 07:13:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:13:09,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:13:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 07:13:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 07:13:09,432 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:13:09,433 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:13:09,616 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:13:09,683 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:13:09,683 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-14 07:13:09,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:13:09 BoogieIcfgContainer [2022-12-14 07:13:09,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:13:09,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:13:09,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:13:09,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:13:09,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:13:09" (1/3) ... [2022-12-14 07:13:09,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ceb8cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:13:09, skipping insertion in model container [2022-12-14 07:13:09,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:13:09" (2/3) ... [2022-12-14 07:13:09,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ceb8cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:13:09, skipping insertion in model container [2022-12-14 07:13:09,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:13:09" (3/3) ... [2022-12-14 07:13:09,694 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy8_ground-1.i [2022-12-14 07:13:09,713 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:13:09,713 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 07:13:09,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:13:09,754 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;@717d6095, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:13:09,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 07:13:09,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:09,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 07:13:09,762 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:13:09,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:13:09,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:13:09,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:13:09,767 INFO L85 PathProgramCache]: Analyzing trace with hash 165548615, now seen corresponding path program 1 times [2022-12-14 07:13:09,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:13:09,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181549522] [2022-12-14 07:13:09,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:13:09,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:13:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:13:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:13:10,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:13:10,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181549522] [2022-12-14 07:13:10,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181549522] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:13:10,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:13:10,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:13:10,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996491801] [2022-12-14 07:13:10,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:13:10,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:13:10,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:13:10,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:13:10,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:13:10,069 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 15 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) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:13:10,132 INFO L93 Difference]: Finished difference Result 31 states and 51 transitions. [2022-12-14 07:13:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:13:10,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 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 [2022-12-14 07:13:10,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:13:10,140 INFO L225 Difference]: With dead ends: 31 [2022-12-14 07:13:10,140 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 07:13:10,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:13:10,144 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:13:10,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:13:10,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 07:13:10,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-14 07:13:10,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:10,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 25 transitions. [2022-12-14 07:13:10,166 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 25 transitions. Word has length 13 [2022-12-14 07:13:10,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:13:10,167 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 25 transitions. [2022-12-14 07:13:10,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:10,167 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 25 transitions. [2022-12-14 07:13:10,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 07:13:10,167 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:13:10,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:13:10,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:13:10,168 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:13:10,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:13:10,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1426642638, now seen corresponding path program 1 times [2022-12-14 07:13:10,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:13:10,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607149981] [2022-12-14 07:13:10,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:13:10,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:13:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:13:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:13:10,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:13:10,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607149981] [2022-12-14 07:13:10,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607149981] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:13:10,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196886166] [2022-12-14 07:13:10,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:13:10,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:13:10,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:13:10,277 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:13:10,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 07:13:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:13:10,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 07:13:10,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:13:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:13:10,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:13:10,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196886166] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:13:10,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:13:10,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-12-14 07:13:10,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219238044] [2022-12-14 07:13:10,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:13:10,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:13:10,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:13:10,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:13:10,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:13:10,389 INFO L87 Difference]: Start difference. First operand 16 states and 25 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:10,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:13:10,437 INFO L93 Difference]: Finished difference Result 36 states and 60 transitions. [2022-12-14 07:13:10,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:13:10,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 07:13:10,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:13:10,438 INFO L225 Difference]: With dead ends: 36 [2022-12-14 07:13:10,438 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 07:13:10,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:13:10,439 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:13:10,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:13:10,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 07:13:10,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-14 07:13:10,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 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) [2022-12-14 07:13:10,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2022-12-14 07:13:10,442 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 14 [2022-12-14 07:13:10,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:13:10,443 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2022-12-14 07:13:10,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:10,443 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2022-12-14 07:13:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 07:13:10,443 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:13:10,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:13:10,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:13:10,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:13:10,645 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:13:10,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:13:10,646 INFO L85 PathProgramCache]: Analyzing trace with hash -514878238, now seen corresponding path program 1 times [2022-12-14 07:13:10,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:13:10,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107347185] [2022-12-14 07:13:10,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:13:10,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:13:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:13:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 07:13:10,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:13:10,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107347185] [2022-12-14 07:13:10,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107347185] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:13:10,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594627005] [2022-12-14 07:13:10,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:13:10,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:13:10,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:13:10,837 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:13:10,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 07:13:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:13:10,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:13:10,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:13:10,955 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 07:13:10,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:13:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 07:13:10,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594627005] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:13:10,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1652613695] [2022-12-14 07:13:10,987 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:13:10,988 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:13:10,990 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:13:10,994 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:13:10,994 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:13:11,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:11,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:11,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:11,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:11,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:11,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:11,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:11,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:11,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:11,493 INFO L321 Elim1Store]: treesize reduction 926, result has 7.4 percent of original size [2022-12-14 07:13:11,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 19 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 41 treesize of output 90 [2022-12-14 07:13:11,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:11,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:11,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:11,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:11,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:11,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:11,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:11,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:11,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:12,098 INFO L321 Elim1Store]: treesize reduction 1278, result has 6.0 percent of original size [2022-12-14 07:13:12,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 62 case distinctions, treesize of input 235 treesize of output 277 [2022-12-14 07:13:12,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:12,219 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 26 treesize of output 28 [2022-12-14 07:13:12,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:12,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:12,656 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 07:13:12,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 858 treesize of output 857 [2022-12-14 07:13:13,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 07:13:13,205 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:13,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:13,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:13,245 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:13,277 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:13:13,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:13:13,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:13,340 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:13,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:13,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:13,370 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:13,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:13,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:13,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:13,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:13,424 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:13,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:13,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:13,489 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:13,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:13,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:13,539 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:13,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:13,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:13,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:13,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:13,588 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:13,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:13,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:13,631 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:13,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:13,667 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:13,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:13,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:13,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:13,738 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:13:13,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:13:13,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:13,809 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:13,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:13,833 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:13,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:13,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:13,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:13,923 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 07:13:13,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 141 [2022-12-14 07:13:14,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:14,014 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:14,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:14,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:14,046 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:14,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:14,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:14,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:14,107 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:14,119 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:14,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:14,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:14,163 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:14,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:14,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:14,185 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:14,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:14,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:14,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:14,233 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:14,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:14,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:14,280 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:14,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:14,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:14,303 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:14,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:14,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:14,334 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:14,334 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:14,354 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:14,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:14,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:14,398 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:14,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:14,412 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:13:14,681 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '383#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_#t~mem21#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) (+ |ULTIMATE.start_main_~#a9~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem21#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem20#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:13:14,681 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:13:14,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:13:14,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-14 07:13:14,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033712170] [2022-12-14 07:13:14,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:13:14,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:13:14,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:13:14,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:13:14,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:13:14,683 INFO L87 Difference]: Start difference. First operand 24 states and 33 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:14,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:13:14,728 INFO L93 Difference]: Finished difference Result 48 states and 68 transitions. [2022-12-14 07:13:14,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:13:14,728 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-12-14 07:13:14,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:13:14,729 INFO L225 Difference]: With dead ends: 48 [2022-12-14 07:13:14,729 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 07:13:14,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:13:14,730 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:13:14,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:13:14,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 07:13:14,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-12-14 07:13:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:14,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-12-14 07:13:14,734 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 22 [2022-12-14 07:13:14,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:13:14,734 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-12-14 07:13:14,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:14,735 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-12-14 07:13:14,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 07:13:14,735 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:13:14,735 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:13:14,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 07:13:14,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:13:14,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:13:14,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:13:14,939 INFO L85 PathProgramCache]: Analyzing trace with hash 381481243, now seen corresponding path program 2 times [2022-12-14 07:13:14,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:13:14,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9025746] [2022-12-14 07:13:14,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:13:14,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:13:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:13:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-14 07:13:15,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:13:15,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9025746] [2022-12-14 07:13:15,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9025746] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:13:15,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987171313] [2022-12-14 07:13:15,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:13:15,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:13:15,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:13:15,087 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:13:15,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 07:13:15,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 07:13:15,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:13:15,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:13:15,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:13:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-14 07:13:15,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:13:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-14 07:13:15,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987171313] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:13:15,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1033075431] [2022-12-14 07:13:15,209 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:13:15,209 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:13:15,209 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:13:15,210 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:13:15,210 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:13:15,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,785 INFO L321 Elim1Store]: treesize reduction 1278, result has 6.0 percent of original size [2022-12-14 07:13:15,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 62 case distinctions, treesize of input 235 treesize of output 277 [2022-12-14 07:13:15,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 64 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 62 [2022-12-14 07:13:15,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:15,957 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 31 treesize of output 33 [2022-12-14 07:13:16,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:16,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:16,307 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 07:13:16,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 868 treesize of output 856 [2022-12-14 07:13:16,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 07:13:16,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:16,563 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:16,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:16,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:16,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:16,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:16,607 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:16,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:16,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:16,652 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:16,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:16,677 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:16,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:16,708 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:16,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:16,742 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:13:16,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:13:16,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:16,803 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:16,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:16,825 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:16,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:16,863 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:16,864 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:16,893 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 07:13:16,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 141 [2022-12-14 07:13:16,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:16,997 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:16,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:17,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,022 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:17,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:17,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:17,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,062 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:17,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:17,093 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,101 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:17,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:17,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,128 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:17,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:17,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:17,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,164 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,175 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:17,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:17,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,227 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:17,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:17,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,275 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:17,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:17,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:17,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,315 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:17,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:17,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,352 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:17,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:17,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,377 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:17,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:17,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:17,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,417 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:17,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:17,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,456 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:17,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:17,476 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:17,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:17,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,541 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 07:13:17,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 141 [2022-12-14 07:13:17,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:17,596 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:17,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:17,610 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:13:17,851 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '675#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_#t~mem21#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) (+ |ULTIMATE.start_main_~#a9~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem21#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem20#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:13:17,851 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:13:17,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:13:17,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 07:13:17,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506961617] [2022-12-14 07:13:17,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:13:17,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:13:17,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:13:17,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:13:17,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:13:17,852 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:17,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:13:17,938 INFO L93 Difference]: Finished difference Result 70 states and 110 transitions. [2022-12-14 07:13:17,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:13:17,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-12-14 07:13:17,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:13:17,938 INFO L225 Difference]: With dead ends: 70 [2022-12-14 07:13:17,938 INFO L226 Difference]: Without dead ends: 51 [2022-12-14 07:13:17,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:13:17,939 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:13:17,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:13:17,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-12-14 07:13:17,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-12-14 07:13:17,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:17,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2022-12-14 07:13:17,943 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 25 [2022-12-14 07:13:17,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:13:17,943 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2022-12-14 07:13:17,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:17,943 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2022-12-14 07:13:17,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-14 07:13:17,944 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:13:17,944 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:13:17,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 07:13:18,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:13:18,146 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:13:18,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:13:18,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2070267783, now seen corresponding path program 3 times [2022-12-14 07:13:18,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:13:18,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663540641] [2022-12-14 07:13:18,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:13:18,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:13:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:13:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-14 07:13:18,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:13:18,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663540641] [2022-12-14 07:13:18,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663540641] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:13:18,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607611916] [2022-12-14 07:13:18,323 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:13:18,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:13:18,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:13:18,324 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:13:18,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 07:13:18,416 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:13:18,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:13:18,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 07:13:18,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:13:18,429 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-14 07:13:18,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:13:18,458 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-14 07:13:18,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607611916] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:13:18,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1568775051] [2022-12-14 07:13:18,459 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:13:18,460 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:13:18,460 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:13:18,460 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:13:18,460 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:13:18,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:18,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:18,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:18,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:18,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:18,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:18,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:18,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:18,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:18,762 INFO L321 Elim1Store]: treesize reduction 926, result has 7.4 percent of original size [2022-12-14 07:13:18,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 19 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 41 treesize of output 90 [2022-12-14 07:13:18,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:18,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:18,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:18,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:18,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:18,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:18,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:18,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:18,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:19,181 INFO L321 Elim1Store]: treesize reduction 1278, result has 6.0 percent of original size [2022-12-14 07:13:19,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 62 case distinctions, treesize of input 235 treesize of output 277 [2022-12-14 07:13:19,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:19,288 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 26 treesize of output 28 [2022-12-14 07:13:19,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:19,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:19,599 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 07:13:19,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 858 treesize of output 857 [2022-12-14 07:13:20,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 07:13:20,081 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:20,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:20,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,152 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:13:20,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:13:20,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,205 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:20,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:20,226 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:20,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:20,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,299 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:13:20,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:13:20,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,360 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:20,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:20,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,384 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:20,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:20,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:20,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,426 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:20,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:20,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,464 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:20,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:20,484 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:20,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:20,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,540 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 07:13:20,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 141 [2022-12-14 07:13:20,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,609 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:20,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:20,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,634 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:20,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:20,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:20,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,674 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:20,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:20,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,724 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:20,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:20,758 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:20,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:20,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,825 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:13:20,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:13:20,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,891 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:20,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:20,914 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:20,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:20,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:20,984 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:13:20,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:13:21,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:21,049 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:21,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:21,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:21,070 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:21,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:21,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:21,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:21,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:21,111 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:21,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:21,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:21,148 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:21,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:21,163 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:13:21,460 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1209#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_#t~mem21#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) (+ |ULTIMATE.start_main_~#a9~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem21#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem20#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:13:21,460 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:13:21,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:13:21,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-14 07:13:21,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902045849] [2022-12-14 07:13:21,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:13:21,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 07:13:21,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:13:21,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 07:13:21,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-12-14 07:13:21,461 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 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) [2022-12-14 07:13:21,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:13:21,505 INFO L93 Difference]: Finished difference Result 102 states and 125 transitions. [2022-12-14 07:13:21,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 07:13:21,505 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 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 49 [2022-12-14 07:13:21,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:13:21,505 INFO L225 Difference]: With dead ends: 102 [2022-12-14 07:13:21,505 INFO L226 Difference]: Without dead ends: 57 [2022-12-14 07:13:21,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 130 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-12-14 07:13:21,506 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:13:21,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:13:21,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-14 07:13:21,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-12-14 07:13:21,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 56 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:21,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2022-12-14 07:13:21,510 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 49 [2022-12-14 07:13:21,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:13:21,510 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2022-12-14 07:13:21,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 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) [2022-12-14 07:13:21,510 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2022-12-14 07:13:21,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 07:13:21,511 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:13:21,511 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:13:21,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 07:13:21,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:13:21,713 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:13:21,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:13:21,714 INFO L85 PathProgramCache]: Analyzing trace with hash 260211239, now seen corresponding path program 4 times [2022-12-14 07:13:21,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:13:21,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073408679] [2022-12-14 07:13:21,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:13:21,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:13:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:13:21,991 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-14 07:13:21,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:13:21,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073408679] [2022-12-14 07:13:21,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073408679] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:13:21,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500362547] [2022-12-14 07:13:21,992 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 07:13:21,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:13:21,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:13:21,993 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:13:21,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 07:13:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:13:22,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 07:13:22,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:13:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-14 07:13:22,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:13:22,296 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-14 07:13:22,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500362547] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:13:22,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [298195880] [2022-12-14 07:13:22,299 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:13:22,299 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:13:22,299 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:13:22,299 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:13:22,299 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:13:22,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:22,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:22,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:22,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:22,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:22,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:22,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:22,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:22,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:22,716 INFO L321 Elim1Store]: treesize reduction 926, result has 7.4 percent of original size [2022-12-14 07:13:22,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 19 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 41 treesize of output 90 [2022-12-14 07:13:22,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:22,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:22,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:22,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:22,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:22,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:22,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:22,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:22,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:23,303 INFO L321 Elim1Store]: treesize reduction 1278, result has 6.0 percent of original size [2022-12-14 07:13:23,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 62 case distinctions, treesize of input 235 treesize of output 277 [2022-12-14 07:13:23,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:23,420 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 26 treesize of output 28 [2022-12-14 07:13:23,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:23,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:23,748 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 07:13:23,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 858 treesize of output 857 [2022-12-14 07:13:24,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 07:13:24,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,265 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:24,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:24,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:24,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,311 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:24,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:24,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,355 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:24,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:24,377 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:24,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:24,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,435 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:13:24,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:13:24,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,490 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:24,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:24,512 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:24,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:24,540 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,541 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,572 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 07:13:24,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 141 [2022-12-14 07:13:24,618 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,623 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:24,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:24,643 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:24,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:24,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,696 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 07:13:24,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 141 [2022-12-14 07:13:24,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,787 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:24,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:24,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,811 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:24,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:24,838 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,838 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,845 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:24,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:24,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,889 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:24,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:24,919 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,924 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:24,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:24,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:24,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,963 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:24,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:24,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:24,995 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:24,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:25,014 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:25,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:25,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:25,043 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:25,064 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:13:25,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:13:25,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:25,121 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:25,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:25,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:25,141 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:25,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:25,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:25,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:25,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:25,175 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:25,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:25,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:25,209 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:25,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:25,223 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:13:25,518 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1867#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_#t~mem21#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) (+ |ULTIMATE.start_main_~#a9~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem21#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem20#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:13:25,519 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:13:25,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:13:25,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-12-14 07:13:25,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115738511] [2022-12-14 07:13:25,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:13:25,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 07:13:25,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:13:25,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 07:13:25,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=550, Unknown=0, NotChecked=0, Total=870 [2022-12-14 07:13:25,521 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:25,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:13:25,568 INFO L93 Difference]: Finished difference Result 114 states and 143 transitions. [2022-12-14 07:13:25,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 07:13:25,568 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 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 55 [2022-12-14 07:13:25,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:13:25,569 INFO L225 Difference]: With dead ends: 114 [2022-12-14 07:13:25,569 INFO L226 Difference]: Without dead ends: 69 [2022-12-14 07:13:25,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 142 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=320, Invalid=550, Unknown=0, NotChecked=0, Total=870 [2022-12-14 07:13:25,570 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:13:25,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:13:25,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-12-14 07:13:25,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-12-14 07:13:25,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.1470588235294117) internal successors, (78), 68 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2022-12-14 07:13:25,578 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 55 [2022-12-14 07:13:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:13:25,578 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2022-12-14 07:13:25,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:25,578 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2022-12-14 07:13:25,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 07:13:25,579 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:13:25,579 INFO L195 NwaCegarLoop]: trace histogram [22, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:13:25,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 07:13:25,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:13:25,780 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:13:25,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:13:25,781 INFO L85 PathProgramCache]: Analyzing trace with hash 71995239, now seen corresponding path program 5 times [2022-12-14 07:13:25,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:13:25,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428135085] [2022-12-14 07:13:25,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:13:25,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:13:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:13:26,272 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-14 07:13:26,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:13:26,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428135085] [2022-12-14 07:13:26,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428135085] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:13:26,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115282100] [2022-12-14 07:13:26,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:13:26,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:13:26,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:13:26,274 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:13:26,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 07:13:26,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 07:13:26,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:13:26,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 07:13:26,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:13:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-12-14 07:13:26,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:13:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-12-14 07:13:26,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115282100] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:13:26,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1782064999] [2022-12-14 07:13:26,773 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:13:26,773 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:13:26,773 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:13:26,774 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:13:26,774 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:13:26,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:26,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:26,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:26,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:26,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:26,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:26,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:26,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:26,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:27,223 INFO L321 Elim1Store]: treesize reduction 1278, result has 6.0 percent of original size [2022-12-14 07:13:27,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 62 case distinctions, treesize of input 235 treesize of output 277 [2022-12-14 07:13:27,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:27,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:27,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:27,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:27,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:27,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:27,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:27,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:27,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:27,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 64 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 62 [2022-12-14 07:13:27,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:27,354 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 26 treesize of output 28 [2022-12-14 07:13:27,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:27,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:27,665 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 07:13:27,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 858 treesize of output 857 [2022-12-14 07:13:28,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 07:13:28,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,168 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:28,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:28,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:28,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,207 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:28,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:28,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,247 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:28,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:28,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,270 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:28,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:28,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,309 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:28,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:28,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,364 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:28,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:28,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,404 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:28,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:28,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:28,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,452 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:28,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:28,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,498 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:28,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:28,515 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,524 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:28,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:28,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:28,556 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,557 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,567 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:28,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:28,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,608 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:28,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:28,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,634 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:28,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:28,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:28,665 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,676 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:28,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:28,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,736 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:28,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:28,776 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:28,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:28,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,843 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:13:28,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:13:28,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,914 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:28,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:28,939 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:28,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:28,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:28,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:29,008 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:13:29,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:13:29,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:29,069 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:29,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:29,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:29,092 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:29,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:29,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:29,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:29,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:29,139 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:29,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:29,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:29,180 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:29,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:29,198 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:13:30,039 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2655#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_#t~mem21#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) (+ |ULTIMATE.start_main_~#a9~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem21#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem20#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:13:30,039 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:13:30,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:13:30,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 7, 7] total 35 [2022-12-14 07:13:30,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176570050] [2022-12-14 07:13:30,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:13:30,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 07:13:30,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:13:30,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 07:13:30,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=1175, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 07:13:30,043 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 35 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 35 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:13:30,220 INFO L93 Difference]: Finished difference Result 163 states and 229 transitions. [2022-12-14 07:13:30,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-14 07:13:30,221 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 35 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-12-14 07:13:30,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:13:30,222 INFO L225 Difference]: With dead ends: 163 [2022-12-14 07:13:30,222 INFO L226 Difference]: Without dead ends: 118 [2022-12-14 07:13:30,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 175 SyntacticMatches, 10 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=385, Invalid=1175, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 07:13:30,223 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:13:30,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:13:30,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-12-14 07:13:30,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-12-14 07:13:30,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0854700854700854) internal successors, (127), 117 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:30,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 127 transitions. [2022-12-14 07:13:30,233 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 127 transitions. Word has length 67 [2022-12-14 07:13:30,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:13:30,233 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 127 transitions. [2022-12-14 07:13:30,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 35 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:30,234 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 127 transitions. [2022-12-14 07:13:30,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-14 07:13:30,235 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:13:30,235 INFO L195 NwaCegarLoop]: trace histogram [23, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:13:30,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 07:13:30,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:13:30,436 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:13:30,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:13:30,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1068670958, now seen corresponding path program 6 times [2022-12-14 07:13:30,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:13:30,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302938239] [2022-12-14 07:13:30,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:13:30,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:13:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:13:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2022-12-14 07:13:31,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:13:31,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302938239] [2022-12-14 07:13:31,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302938239] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:13:31,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899079160] [2022-12-14 07:13:31,122 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:13:31,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:13:31,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:13:31,123 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:13:31,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 07:13:31,325 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:13:31,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:13:31,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 07:13:31,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:13:31,366 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2022-12-14 07:13:31,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:13:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2022-12-14 07:13:31,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899079160] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:13:31,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1135915608] [2022-12-14 07:13:31,841 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:13:31,842 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:13:31,842 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:13:31,842 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:13:31,842 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:13:31,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:31,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:31,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:31,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:31,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:31,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:31,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:31,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:31,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:32,342 INFO L321 Elim1Store]: treesize reduction 1278, result has 6.0 percent of original size [2022-12-14 07:13:32,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 62 case distinctions, treesize of input 235 treesize of output 277 [2022-12-14 07:13:32,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:32,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:32,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:32,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:32,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:32,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:32,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:32,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:32,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:32,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 64 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 62 [2022-12-14 07:13:32,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:32,470 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 31 treesize of output 33 [2022-12-14 07:13:32,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:32,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:32,781 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 07:13:32,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 868 treesize of output 856 [2022-12-14 07:13:32,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 07:13:33,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,015 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:33,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:33,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:33,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,052 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:33,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:33,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,090 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:33,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:33,114 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:33,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:33,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,173 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:13:33,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:13:33,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,227 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:33,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:33,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,248 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:33,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:33,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:33,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,288 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,295 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:33,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:33,323 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,329 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:33,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:33,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,350 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:33,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:33,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:33,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,384 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:33,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:33,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,417 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:33,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:33,437 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:33,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:33,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,487 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:13:33,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:13:33,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,531 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:33,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:33,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,552 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:33,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:33,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:33,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,596 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:33,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:33,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,639 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:33,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:33,657 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,663 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:33,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:33,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:33,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,708 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:33,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:33,738 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,744 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:33,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:33,764 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:33,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:33,793 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,821 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 07:13:33,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 141 [2022-12-14 07:13:33,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:33,874 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:33,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:33,890 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:13:34,184 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3949#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_#t~mem21#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) (+ |ULTIMATE.start_main_~#a9~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem21#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem20#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:13:34,184 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:13:34,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:13:34,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2022-12-14 07:13:34,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352664410] [2022-12-14 07:13:34,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:13:34,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-14 07:13:34,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:13:34,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-14 07:13:34,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1295, Invalid=1785, Unknown=0, NotChecked=0, Total=3080 [2022-12-14 07:13:34,187 INFO L87 Difference]: Start difference. First operand 118 states and 127 transitions. Second operand has 51 states, 51 states have (on average 1.392156862745098) internal successors, (71), 50 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:34,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:13:34,271 INFO L93 Difference]: Finished difference Result 236 states and 278 transitions. [2022-12-14 07:13:34,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-14 07:13:34,271 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.392156862745098) internal successors, (71), 50 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-12-14 07:13:34,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:13:34,272 INFO L225 Difference]: With dead ends: 236 [2022-12-14 07:13:34,272 INFO L226 Difference]: Without dead ends: 143 [2022-12-14 07:13:34,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1295, Invalid=1785, Unknown=0, NotChecked=0, Total=3080 [2022-12-14 07:13:34,274 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:13:34,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:13:34,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-12-14 07:13:34,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2022-12-14 07:13:34,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0704225352112675) internal successors, (152), 142 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:34,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 152 transitions. [2022-12-14 07:13:34,283 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 152 transitions. Word has length 116 [2022-12-14 07:13:34,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:13:34,284 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 152 transitions. [2022-12-14 07:13:34,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.392156862745098) internal successors, (71), 50 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:34,284 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 152 transitions. [2022-12-14 07:13:34,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-14 07:13:34,286 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:13:34,286 INFO L195 NwaCegarLoop]: trace histogram [48, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:13:34,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 07:13:34,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 07:13:34,487 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:13:34,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:13:34,489 INFO L85 PathProgramCache]: Analyzing trace with hash 172160007, now seen corresponding path program 7 times [2022-12-14 07:13:34,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:13:34,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010607671] [2022-12-14 07:13:34,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:13:34,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:13:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:13:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2022-12-14 07:13:36,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:13:36,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010607671] [2022-12-14 07:13:36,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010607671] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:13:36,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75813526] [2022-12-14 07:13:36,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 07:13:36,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:13:36,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:13:36,174 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:13:36,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 07:13:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:13:36,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-14 07:13:36,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:13:36,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2022-12-14 07:13:36,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:13:38,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1616 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2022-12-14 07:13:38,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75813526] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:13:38,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1757188905] [2022-12-14 07:13:38,345 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:13:38,345 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:13:38,345 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:13:38,346 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:13:38,346 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:13:38,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:38,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:38,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:38,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:38,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:38,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:38,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:38,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:38,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:38,678 INFO L321 Elim1Store]: treesize reduction 926, result has 7.4 percent of original size [2022-12-14 07:13:38,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 19 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 41 treesize of output 90 [2022-12-14 07:13:38,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:38,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:38,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:38,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:38,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:38,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:38,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:38,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:38,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:39,153 INFO L321 Elim1Store]: treesize reduction 1278, result has 6.0 percent of original size [2022-12-14 07:13:39,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 62 case distinctions, treesize of input 235 treesize of output 277 [2022-12-14 07:13:39,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:39,265 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 26 treesize of output 28 [2022-12-14 07:13:39,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:39,545 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:39,566 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 07:13:39,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 858 treesize of output 857 [2022-12-14 07:13:40,030 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 07:13:40,050 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:40,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:40,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,108 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 07:13:40,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 141 [2022-12-14 07:13:40,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,166 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:40,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:40,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,189 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:40,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:40,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:40,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,225 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:40,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:40,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,278 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:40,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:40,315 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:40,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:40,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,375 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 07:13:40,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 141 [2022-12-14 07:13:40,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,444 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:40,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:40,463 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:40,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:40,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,524 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:13:40,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:13:40,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,585 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:40,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:40,602 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:40,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:40,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,658 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 07:13:40,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 141 [2022-12-14 07:13:40,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,724 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:40,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:40,739 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,745 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:40,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:40,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:40,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,782 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:40,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:40,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,821 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:40,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:40,843 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:13:40,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:13:40,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,897 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:13:40,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:13:40,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,980 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:40,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:40,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:40,998 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:40,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:41,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:41,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:41,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:41,041 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:13:41,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:13:41,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:13:41,076 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:13:41,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:13:41,091 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:13:41,936 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5639#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_#t~mem21#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) (+ |ULTIMATE.start_main_~#a9~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem21#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem20#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:13:41,936 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:13:41,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:13:41,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 100 [2022-12-14 07:13:41,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107166085] [2022-12-14 07:13:41,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:13:41,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-12-14 07:13:41,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:13:41,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-12-14 07:13:41,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5070, Invalid=6060, Unknown=0, NotChecked=0, Total=11130 [2022-12-14 07:13:41,939 INFO L87 Difference]: Start difference. First operand 143 states and 152 transitions. Second operand has 101 states, 101 states have (on average 1.198019801980198) internal successors, (121), 100 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:42,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:13:42,044 INFO L93 Difference]: Finished difference Result 286 states and 353 transitions. [2022-12-14 07:13:42,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-12-14 07:13:42,045 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.198019801980198) internal successors, (121), 100 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-12-14 07:13:42,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:13:42,046 INFO L225 Difference]: With dead ends: 286 [2022-12-14 07:13:42,046 INFO L226 Difference]: Without dead ends: 193 [2022-12-14 07:13:42,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 356 SyntacticMatches, 11 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2544 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5070, Invalid=6060, Unknown=0, NotChecked=0, Total=11130 [2022-12-14 07:13:42,048 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:13:42,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:13:42,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-12-14 07:13:42,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2022-12-14 07:13:42,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.0520833333333333) internal successors, (202), 192 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 202 transitions. [2022-12-14 07:13:42,055 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 202 transitions. Word has length 141 [2022-12-14 07:13:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:13:42,055 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 202 transitions. [2022-12-14 07:13:42,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.198019801980198) internal successors, (121), 100 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:13:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 202 transitions. [2022-12-14 07:13:42,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-12-14 07:13:42,057 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:13:42,057 INFO L195 NwaCegarLoop]: trace histogram [98, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:13:42,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 07:13:42,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:13:42,259 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:13:42,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:13:42,260 INFO L85 PathProgramCache]: Analyzing trace with hash 68909543, now seen corresponding path program 8 times [2022-12-14 07:13:42,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:13:42,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239358785] [2022-12-14 07:13:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:13:42,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:13:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:13:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5291 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2022-12-14 07:13:46,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:13:46,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239358785] [2022-12-14 07:13:46,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239358785] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:13:46,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921295542] [2022-12-14 07:13:46,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:13:46,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:13:46,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:13:46,838 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:13:46,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 07:13:58,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 07:13:58,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:13:58,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 07:13:58,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:13:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5291 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5236 trivial. 0 not checked. [2022-12-14 07:13:58,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:13:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5291 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5236 trivial. 0 not checked. [2022-12-14 07:13:58,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921295542] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:13:58,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1177880064] [2022-12-14 07:13:58,853 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:13:58,853 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:13:58,853 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:13:58,853 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:13:58,853 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:13:58,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:58,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:58,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:58,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:58,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:58,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:58,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:58,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:58,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:59,226 INFO L321 Elim1Store]: treesize reduction 926, result has 7.4 percent of original size [2022-12-14 07:13:59,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 19 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 41 treesize of output 90 [2022-12-14 07:13:59,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:59,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:59,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:59,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:59,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:59,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:59,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:59,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:59,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:59,685 INFO L321 Elim1Store]: treesize reduction 1278, result has 6.0 percent of original size [2022-12-14 07:13:59,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 62 case distinctions, treesize of input 235 treesize of output 277 [2022-12-14 07:13:59,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:13:59,774 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 31 treesize of output 33 [2022-12-14 07:14:00,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:00,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:00,073 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 07:14:00,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 868 treesize of output 856 [2022-12-14 07:14:00,287 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 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 07:14:00,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,309 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:00,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:00,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:00,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,349 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:14:00,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:14:00,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,385 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:00,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:00,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,406 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:00,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:00,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,444 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:14:00,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:14:00,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,487 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:00,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:00,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,530 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:00,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:00,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:00,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,569 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:14:00,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:14:00,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,600 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:00,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:00,621 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:14:00,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:14:00,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,679 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:14:00,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:14:00,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,726 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:00,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:00,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,748 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:00,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:00,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,784 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:14:00,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:14:00,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,843 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:00,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:00,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,877 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:00,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:00,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:00,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,916 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:14:00,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:14:00,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,952 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:00,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:00,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:00,975 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:00,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:01,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:01,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:01,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:01,015 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:14:01,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:14:01,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:01,054 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:01,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:01,074 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:14:01,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:14:01,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:01,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:01,150 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 07:14:01,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 141 [2022-12-14 07:14:01,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:01,210 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:01,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:01,224 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:14:04,370 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7851#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_#t~mem21#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) (+ |ULTIMATE.start_main_~#a9~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem21#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem20#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:14:04,370 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:14:04,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:14:04,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 13, 13] total 123 [2022-12-14 07:14:04,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198163885] [2022-12-14 07:14:04,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:14:04,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-12-14 07:14:04,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:14:04,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-12-14 07:14:04,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5345, Invalid=10911, Unknown=0, NotChecked=0, Total=16256 [2022-12-14 07:14:04,375 INFO L87 Difference]: Start difference. First operand 193 states and 202 transitions. Second operand has 123 states, 123 states have (on average 1.1788617886178863) internal successors, (145), 123 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:14:04,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:14:04,804 INFO L93 Difference]: Finished difference Result 383 states and 497 transitions. [2022-12-14 07:14:04,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-12-14 07:14:04,805 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 1.1788617886178863) internal successors, (145), 123 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2022-12-14 07:14:04,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:14:04,806 INFO L225 Difference]: With dead ends: 383 [2022-12-14 07:14:04,806 INFO L226 Difference]: Without dead ends: 290 [2022-12-14 07:14:04,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 523 SyntacticMatches, 22 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5639 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=5345, Invalid=10911, Unknown=0, NotChecked=0, Total=16256 [2022-12-14 07:14:04,809 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:14:04,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:14:04,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-12-14 07:14:04,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2022-12-14 07:14:04,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.0346020761245676) internal successors, (299), 289 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:14:04,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 299 transitions. [2022-12-14 07:14:04,818 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 299 transitions. Word has length 191 [2022-12-14 07:14:04,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:14:04,818 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 299 transitions. [2022-12-14 07:14:04,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 123 states have (on average 1.1788617886178863) internal successors, (145), 123 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:14:04,818 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 299 transitions. [2022-12-14 07:14:04,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-12-14 07:14:04,821 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:14:04,821 INFO L195 NwaCegarLoop]: trace histogram [99, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:14:04,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-14 07:14:05,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 07:14:05,022 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:14:05,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:14:05,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1852994258, now seen corresponding path program 9 times [2022-12-14 07:14:05,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:14:05,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553468349] [2022-12-14 07:14:05,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:14:05,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:14:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:14:10,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6974 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2022-12-14 07:14:10,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:14:10,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553468349] [2022-12-14 07:14:10,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553468349] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:14:10,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987884065] [2022-12-14 07:14:10,634 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:14:10,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:14:10,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:14:10,635 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:14:10,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 07:14:11,203 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:14:11,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:14:11,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 2349 conjuncts, 101 conjunts are in the unsatisfiable core [2022-12-14 07:14:11,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:14:11,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6974 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2022-12-14 07:14:11,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:14:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6974 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2022-12-14 07:14:18,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987884065] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:14:18,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [606762046] [2022-12-14 07:14:18,238 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:14:18,238 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:14:18,239 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:14:18,239 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:14:18,239 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:14:18,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,828 INFO L321 Elim1Store]: treesize reduction 1278, result has 6.0 percent of original size [2022-12-14 07:14:18,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 62 case distinctions, treesize of input 235 treesize of output 277 [2022-12-14 07:14:18,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 64 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 62 [2022-12-14 07:14:18,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:18,962 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 31 treesize of output 33 [2022-12-14 07:14:19,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:19,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:19,283 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 07:14:19,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 868 treesize of output 856 [2022-12-14 07:14:19,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 07:14:19,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:19,530 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:19,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:19,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:19,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:19,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:19,575 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:14:19,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:14:19,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:19,619 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:19,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:19,641 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:14:19,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:14:19,674 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:19,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:19,724 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 07:14:19,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 141 [2022-12-14 07:14:19,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:19,818 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:19,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:19,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:19,844 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:19,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:19,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:19,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:19,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:19,886 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:14:19,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:14:19,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:19,931 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:19,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:19,956 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:14:19,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:14:19,988 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:19,988 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:20,025 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 07:14:20,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 141 [2022-12-14 07:14:20,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:20,121 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:20,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:20,156 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:14:20,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:14:20,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:20,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:20,242 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 07:14:20,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 141 [2022-12-14 07:14:20,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:20,296 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:20,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:20,316 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:20,325 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:20,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:20,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:14:20,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:20,358 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:20,369 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:14:20,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:14:20,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:20,412 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:20,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:20,435 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:14:20,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:14:20,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:20,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:20,505 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 07:14:20,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 141 [2022-12-14 07:14:20,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:20,612 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:20,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:20,638 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:14:20,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:14:20,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:20,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:20,718 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:14:20,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:14:20,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:14:20,784 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:14:20,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:14:20,798 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:14:21,546 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11113#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_#t~mem21#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) (+ |ULTIMATE.start_main_~#a9~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem21#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem20#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:14:21,546 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:14:21,546 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:14:21,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 202 [2022-12-14 07:14:21,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161185636] [2022-12-14 07:14:21,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:14:21,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2022-12-14 07:14:21,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:14:21,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2022-12-14 07:14:21,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20523, Invalid=22533, Unknown=0, NotChecked=0, Total=43056 [2022-12-14 07:14:21,557 INFO L87 Difference]: Start difference. First operand 290 states and 299 transitions. Second operand has 203 states, 203 states have (on average 1.0985221674876848) internal successors, (223), 202 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:14:22,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:14:22,056 INFO L93 Difference]: Finished difference Result 580 states and 698 transitions. [2022-12-14 07:14:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-12-14 07:14:22,057 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 1.0985221674876848) internal successors, (223), 202 states have internal predecessors, (223), 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 288 [2022-12-14 07:14:22,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:14:22,058 INFO L225 Difference]: With dead ends: 580 [2022-12-14 07:14:22,058 INFO L226 Difference]: Without dead ends: 391 [2022-12-14 07:14:22,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 963 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1896 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=20523, Invalid=22533, Unknown=0, NotChecked=0, Total=43056 [2022-12-14 07:14:22,060 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:14:22,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:14:22,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-12-14 07:14:22,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2022-12-14 07:14:22,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.0256410256410255) internal successors, (400), 390 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:14:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 400 transitions. [2022-12-14 07:14:22,070 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 400 transitions. Word has length 288 [2022-12-14 07:14:22,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:14:22,070 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 400 transitions. [2022-12-14 07:14:22,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 1.0985221674876848) internal successors, (223), 202 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:14:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 400 transitions. [2022-12-14 07:14:22,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-12-14 07:14:22,074 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:14:22,074 INFO L195 NwaCegarLoop]: trace histogram [200, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:14:22,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 07:14:22,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 07:14:22,275 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:14:22,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:14:22,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1906595577, now seen corresponding path program 10 times [2022-12-14 07:14:22,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:14:22,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743631695] [2022-12-14 07:14:22,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:14:22,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:14:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:14:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 22124 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2022-12-14 07:14:41,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:14:41,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743631695] [2022-12-14 07:14:41,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743631695] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:14:41,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054760252] [2022-12-14 07:14:41,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 07:14:41,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:14:41,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:14:41,615 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:14:41,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 07:14:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:14:42,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 3258 conjuncts, 202 conjunts are in the unsatisfiable core [2022-12-14 07:14:42,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:14:42,413 INFO L134 CoverageAnalysis]: Checked inductivity of 22124 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2022-12-14 07:14:42,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:15:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 22124 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2022-12-14 07:15:13,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054760252] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:15:13,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [140238883] [2022-12-14 07:15:13,570 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:15:13,570 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:15:13,570 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:15:13,571 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:15:13,571 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:15:13,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:13,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:13,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:13,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:13,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:13,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:13,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:13,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:13,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:14,156 INFO L321 Elim1Store]: treesize reduction 1278, result has 6.0 percent of original size [2022-12-14 07:15:14,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 62 case distinctions, treesize of input 235 treesize of output 277 [2022-12-14 07:15:14,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:14,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:14,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:14,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:14,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:14,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:14,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:14,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:14,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:14,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 64 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 62 [2022-12-14 07:15:14,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:14,282 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 26 treesize of output 28 [2022-12-14 07:15:14,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:14,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:14,622 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 07:15:14,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 858 treesize of output 857 [2022-12-14 07:15:15,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 07:15:15,129 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:15:15,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:15:15,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:15,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:15,195 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 07:15:15,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 141 [2022-12-14 07:15:15,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:15,280 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:15:15,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:15:15,306 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:15:15,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:15:15,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:15,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:15,386 INFO L321 Elim1Store]: treesize reduction 89, result has 36.4 percent of original size [2022-12-14 07:15:15,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 141 [2022-12-14 07:15:15,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:15,474 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:15:15,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:15:15,500 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:15:15,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:15:15,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:15,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:15,573 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:15:15,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:15:15,630 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:15,639 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:15:15,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:15:15,663 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:15:15,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:15:15,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:15,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:15,735 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:15:15,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:15:15,782 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:15,791 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:15:15,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:15:15,815 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 07:15:15,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 07:15:15,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:15,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:15,877 INFO L321 Elim1Store]: treesize reduction 99, result has 29.3 percent of original size [2022-12-14 07:15:15,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 131 [2022-12-14 07:15:15,922 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:15,931 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:15:15,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:15:15,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:15,959 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:15:15,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:15:15,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:15,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:15,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:16,003 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:15:16,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:15:16,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:16,047 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:15:16,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:15:16,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:16,073 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:15:16,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:15:16,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:16,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:16,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:16,113 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:15:16,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:15:16,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:16,165 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:15:16,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:15:16,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:16,189 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:15:16,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:15:16,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:15:16,235 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:16,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:16,245 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 07:15:16,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 127 [2022-12-14 07:15:16,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 07:15:16,289 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 07:15:16,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2022-12-14 07:15:16,305 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:15:17,348 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15779#(and (<= 0 |ULTIMATE.start_main_~#a4~0#1.base|) (= |ULTIMATE.start_main_~#a5~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a1~0#1.base|) (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a9~0#1.base|) (= |ULTIMATE.start_main_~#a9~0#1.offset| 0) (= |ULTIMATE.start_main_~#a3~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_#t~mem21#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a9~0#1.base|) (+ |ULTIMATE.start_main_~#a9~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (= |ULTIMATE.start_main_~#a1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a7~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~#a2~0#1.base|) (= |ULTIMATE.start_main_~#a6~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#a3~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a8~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a5~0#1.base|) (= |ULTIMATE.start_main_~#a2~0#1.offset| 0) (= |ULTIMATE.start_main_~#a8~0#1.offset| 0) (= (ite (= |ULTIMATE.start_main_#t~mem21#1| |ULTIMATE.start_main_#t~mem20#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#a6~0#1.base|) (= |ULTIMATE.start_main_~#a7~0#1.offset| 0) (= |ULTIMATE.start_main_~#a4~0#1.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_#t~mem20#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a1~0#1.base|) (+ |ULTIMATE.start_main_~#a1~0#1.offset| (* |ULTIMATE.start_main_~x~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 07:15:17,348 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:15:17,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:15:17,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202, 202] total 404 [2022-12-14 07:15:17,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180613981] [2022-12-14 07:15:17,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:15:17,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 405 states [2022-12-14 07:15:17,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:15:17,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 405 interpolants. [2022-12-14 07:15:17,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81830, Invalid=85860, Unknown=0, NotChecked=0, Total=167690 [2022-12-14 07:15:17,365 INFO L87 Difference]: Start difference. First operand 391 states and 400 transitions. Second operand has 405 states, 405 states have (on average 1.0493827160493827) internal successors, (425), 404 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:15:19,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:15:19,079 INFO L93 Difference]: Finished difference Result 782 states and 1001 transitions. [2022-12-14 07:15:19,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 404 states. [2022-12-14 07:15:19,080 INFO L78 Accepts]: Start accepts. Automaton has has 405 states, 405 states have (on average 1.0493827160493827) internal successors, (425), 404 states have internal predecessors, (425), 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 389 [2022-12-14 07:15:19,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:15:19,081 INFO L225 Difference]: With dead ends: 782 [2022-12-14 07:15:19,081 INFO L226 Difference]: Without dead ends: 593 [2022-12-14 07:15:19,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1367 GetRequests, 959 SyntacticMatches, 0 SemanticMatches, 408 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 41.3s TimeCoverageRelationStatistics Valid=81830, Invalid=85860, Unknown=0, NotChecked=0, Total=167690 [2022-12-14 07:15:19,088 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:15:19,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:15:19,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-12-14 07:15:19,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2022-12-14 07:15:19,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 1.0168918918918919) internal successors, (602), 592 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:15:19,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 602 transitions. [2022-12-14 07:15:19,101 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 602 transitions. Word has length 389 [2022-12-14 07:15:19,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:15:19,101 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 602 transitions. [2022-12-14 07:15:19,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 405 states, 405 states have (on average 1.0493827160493827) internal successors, (425), 404 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:15:19,102 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 602 transitions. [2022-12-14 07:15:19,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2022-12-14 07:15:19,104 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:15:19,104 INFO L195 NwaCegarLoop]: trace histogram [402, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:15:19,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-14 07:15:19,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:15:19,305 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:15:19,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:15:19,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1007124839, now seen corresponding path program 11 times [2022-12-14 07:15:19,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:15:19,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365251955] [2022-12-14 07:15:19,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:15:19,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:15:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:16:41,581 INFO L134 CoverageAnalysis]: Checked inductivity of 83027 backedges. 0 proven. 81003 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2022-12-14 07:16:41,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:16:41,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365251955] [2022-12-14 07:16:41,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365251955] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:16:41,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961987696] [2022-12-14 07:16:41,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:16:41,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:16:41,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:16:41,583 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:16:41,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d72ff4d-af7f-4a44-9215-5433077e6819/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process