./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array2_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array2_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS --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 1a25becec148beba97bef86c2a84619bb26dfafe7c127e8d70246837f0d2d470 --- 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-8393723 [2022-11-19 06:52:41,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:52:41,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:52:41,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:52:41,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:52:41,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:52:41,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:52:41,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:52:41,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:52:41,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:52:41,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:52:41,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:52:41,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:52:41,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:52:41,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:52:41,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:52:41,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:52:41,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:52:41,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:52:41,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:52:41,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:52:41,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:52:41,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:52:41,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:52:41,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:52:41,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:52:41,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:52:41,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:52:41,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:52:41,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:52:41,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:52:41,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:52:41,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:52:41,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:52:41,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:52:41,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:52:41,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:52:41,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:52:41,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:52:41,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:52:41,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:52:41,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:52:41,170 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:52:41,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:52:41,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:52:41,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:52:41,172 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:52:41,173 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:52:41,173 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:52:41,173 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:52:41,173 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:52:41,174 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:52:41,175 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:52:41,175 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:52:41,175 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:52:41,175 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:52:41,176 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:52:41,176 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:52:41,176 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:52:41,176 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:52:41,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:52:41,177 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:52:41,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:52:41,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:52:41,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:52:41,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:52:41,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:52:41,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:52:41,179 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:52:41,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:52:41,179 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:52:41,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:52:41,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:52:41,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:52:41,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:52:41,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:52:41,180 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:52:41,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:52:41,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:52:41,181 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:52:41,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:52:41,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:52:41,181 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:52:41,182 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_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a25becec148beba97bef86c2a84619bb26dfafe7c127e8d70246837f0d2d470 [2022-11-19 06:52:41,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:52:41,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:52:41,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:52:41,492 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:52:41,493 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:52:41,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/array-patterns/array2_pattern.c [2022-11-19 06:52:41,557 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/data/e4a9827c0/d9d46bba6b2a48ef9d6278151e792adf/FLAG89096b466 [2022-11-19 06:52:41,986 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:52:41,987 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/sv-benchmarks/c/array-patterns/array2_pattern.c [2022-11-19 06:52:41,993 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/data/e4a9827c0/d9d46bba6b2a48ef9d6278151e792adf/FLAG89096b466 [2022-11-19 06:52:42,387 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/data/e4a9827c0/d9d46bba6b2a48ef9d6278151e792adf [2022-11-19 06:52:42,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:52:42,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:52:42,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:52:42,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:52:42,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:52:42,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:52:42" (1/1) ... [2022-11-19 06:52:42,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc0c94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:42, skipping insertion in model container [2022-11-19 06:52:42,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:52:42" (1/1) ... [2022-11-19 06:52:42,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:52:42,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:52:42,643 WARN L234 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_5974a4c2-0d75-47b0-8cbd-3c033a43165b/sv-benchmarks/c/array-patterns/array2_pattern.c[1322,1335] [2022-11-19 06:52:42,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:52:42,670 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:52:42,681 WARN L234 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_5974a4c2-0d75-47b0-8cbd-3c033a43165b/sv-benchmarks/c/array-patterns/array2_pattern.c[1322,1335] [2022-11-19 06:52:42,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:52:42,699 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:52:42,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:42 WrapperNode [2022-11-19 06:52:42,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:52:42,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:52:42,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:52:42,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:52:42,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:42" (1/1) ... [2022-11-19 06:52:42,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:42" (1/1) ... [2022-11-19 06:52:42,745 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2022-11-19 06:52:42,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:52:42,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:52:42,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:52:42,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:52:42,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:42" (1/1) ... [2022-11-19 06:52:42,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:42" (1/1) ... [2022-11-19 06:52:42,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:42" (1/1) ... [2022-11-19 06:52:42,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:42" (1/1) ... [2022-11-19 06:52:42,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:42" (1/1) ... [2022-11-19 06:52:42,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:42" (1/1) ... [2022-11-19 06:52:42,795 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:42" (1/1) ... [2022-11-19 06:52:42,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:42" (1/1) ... [2022-11-19 06:52:42,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:52:42,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:52:42,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:52:42,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:52:42,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:42" (1/1) ... [2022-11-19 06:52:42,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:52:42,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:42,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:52:42,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:52:42,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:52:42,876 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 06:52:42,877 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 06:52:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:52:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:52:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:52:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:52:42,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:52:42,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:52:42,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:52:42,959 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:52:42,962 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:52:43,188 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:52:43,258 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:52:43,259 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 06:52:43,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:43 BoogieIcfgContainer [2022-11-19 06:52:43,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:52:43,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:52:43,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:52:43,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:52:43,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:52:42" (1/3) ... [2022-11-19 06:52:43,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3670ffa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:52:43, skipping insertion in model container [2022-11-19 06:52:43,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:42" (2/3) ... [2022-11-19 06:52:43,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3670ffa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:52:43, skipping insertion in model container [2022-11-19 06:52:43,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:43" (3/3) ... [2022-11-19 06:52:43,286 INFO L112 eAbstractionObserver]: Analyzing ICFG array2_pattern.c [2022-11-19 06:52:43,311 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:52:43,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:52:43,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:52:43,407 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;@2d377b84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:52:43,408 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:52:43,412 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:52:43,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 06:52:43,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:43,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:43,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:43,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:43,428 INFO L85 PathProgramCache]: Analyzing trace with hash -348000308, now seen corresponding path program 1 times [2022-11-19 06:52:43,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:43,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808205866] [2022-11-19 06:52:43,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:43,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:43,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:43,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808205866] [2022-11-19 06:52:43,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808205866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:43,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:43,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:52:43,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417725690] [2022-11-19 06:52:43,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:43,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:52:43,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:43,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:52:43,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:52:43,700 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 06:52:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:43,762 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2022-11-19 06:52:43,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:52:43,765 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-19 06:52:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:43,771 INFO L225 Difference]: With dead ends: 24 [2022-11-19 06:52:43,772 INFO L226 Difference]: Without dead ends: 15 [2022-11-19 06:52:43,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:52:43,777 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:43,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:43,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-19 06:52:43,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-19 06:52:43,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:52:43,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2022-11-19 06:52:43,809 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 11 [2022-11-19 06:52:43,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:43,810 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2022-11-19 06:52:43,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 06:52:43,810 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2022-11-19 06:52:43,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 06:52:43,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:43,812 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:43,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:52:43,812 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:43,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1400754714, now seen corresponding path program 1 times [2022-11-19 06:52:43,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:43,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078710690] [2022-11-19 06:52:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:43,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:43,852 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:52:43,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428126497] [2022-11-19 06:52:43,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:43,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:43,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:43,856 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:43,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:52:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:43,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 06:52:43,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:52:44,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:44,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:44,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078710690] [2022-11-19 06:52:44,043 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:52:44,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428126497] [2022-11-19 06:52:44,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428126497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:44,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:44,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:52:44,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71355755] [2022-11-19 06:52:44,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:44,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:52:44,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:44,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:52:44,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:44,047 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:52:44,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:44,085 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2022-11-19 06:52:44,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:52:44,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-19 06:52:44,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:44,088 INFO L225 Difference]: With dead ends: 19 [2022-11-19 06:52:44,088 INFO L226 Difference]: Without dead ends: 16 [2022-11-19 06:52:44,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:52:44,090 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:44,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 28 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:44,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-19 06:52:44,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-19 06:52:44,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:52:44,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-11-19 06:52:44,096 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 16 [2022-11-19 06:52:44,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:44,096 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-11-19 06:52:44,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:52:44,096 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-11-19 06:52:44,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 06:52:44,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:44,097 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:44,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:44,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-19 06:52:44,298 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:44,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:44,299 INFO L85 PathProgramCache]: Analyzing trace with hash 473487722, now seen corresponding path program 1 times [2022-11-19 06:52:44,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:44,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416379038] [2022-11-19 06:52:44,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:44,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:44,329 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:52:44,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399922899] [2022-11-19 06:52:44,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:44,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:44,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:44,335 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:44,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:52:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:44,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:52:44,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:44,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:44,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:44,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:44,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416379038] [2022-11-19 06:52:44,495 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:52:44,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399922899] [2022-11-19 06:52:44,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399922899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:44,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:44,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:52:44,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821538584] [2022-11-19 06:52:44,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:44,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:52:44,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:44,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:52:44,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:52:44,498 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:52:44,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:44,601 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2022-11-19 06:52:44,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:52:44,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-11-19 06:52:44,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:44,604 INFO L225 Difference]: With dead ends: 29 [2022-11-19 06:52:44,604 INFO L226 Difference]: Without dead ends: 17 [2022-11-19 06:52:44,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:52:44,608 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:44,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 39 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:52:44,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-19 06:52:44,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-19 06:52:44,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:52:44,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-19 06:52:44,622 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 17 [2022-11-19 06:52:44,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:44,622 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-19 06:52:44,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:52:44,622 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-19 06:52:44,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 06:52:44,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:44,623 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:44,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 06:52:44,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:44,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:44,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:44,825 INFO L85 PathProgramCache]: Analyzing trace with hash 199414858, now seen corresponding path program 1 times [2022-11-19 06:52:44,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:44,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501496465] [2022-11-19 06:52:44,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:44,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:44,874 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:52:44,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675223543] [2022-11-19 06:52:44,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:44,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:44,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:44,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:44,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:52:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:44,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-19 06:52:44,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:45,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-19 06:52:45,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:52:45,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-19 06:52:45,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-19 06:52:45,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-19 06:52:45,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-11-19 06:52:45,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:52:45,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 162 [2022-11-19 06:52:45,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 154 [2022-11-19 06:52:45,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:52:45,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:52:45,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 197 [2022-11-19 06:52:45,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:52:45,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2022-11-19 06:52:45,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:52:45,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:52:45,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 14 [2022-11-19 06:52:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:46,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:46,272 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse8 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse10 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse9 .cse10 (+ (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse9 .cse10)))))) (.cse3 (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (.cse4 (* 4 .cse8)) (.cse5 (<= .cse8 2147483647))) (and (or (forall ((v_ArrVal_106 (Array Int Int)) (v_ArrVal_103 (Array Int Int))) (= (let ((.cse1 (let ((.cse2 (+ .cse4 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_106) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse2 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_103) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse2) .cse3))))) (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse1) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1|)) 0)) (not .cse5)) (or (forall ((v_ArrVal_106 (Array Int Int)) (v_ArrVal_103 (Array Int Int))) (= (let ((.cse6 (let ((.cse7 (+ (- 17179869184) .cse4 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_106) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse7 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_103) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse7) .cse3))))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select (select (store .cse0 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse6) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse6 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 0)) .cse5)))) is different from false [2022-11-19 06:52:46,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:46,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501496465] [2022-11-19 06:52:46,596 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:52:46,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675223543] [2022-11-19 06:52:46,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675223543] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:52:46,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [6888216] [2022-11-19 06:52:46,615 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 06:52:46,615 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:52:46,619 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:52:46,624 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:52:46,624 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:52:46,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:52:46,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:52:46,788 INFO L321 Elim1Store]: treesize reduction 80, result has 29.8 percent of original size [2022-11-19 06:52:46,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 57 [2022-11-19 06:52:46,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:52:46,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:52:46,903 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-19 06:52:46,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-19 06:52:46,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:52:46,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:52:46,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-19 06:52:47,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:52:47,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:52:47,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:52:47,108 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:52:47,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:52:47,213 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-11-19 06:52:47,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 355 treesize of output 353 [2022-11-19 06:52:47,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:52:47,608 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-19 06:52:47,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-11-19 06:52:47,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:52:47,903 INFO L321 Elim1Store]: treesize reduction 176, result has 51.6 percent of original size [2022-11-19 06:52:47,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 493 treesize of output 628 [2022-11-19 06:52:48,051 INFO L321 Elim1Store]: treesize reduction 37, result has 17.8 percent of original size [2022-11-19 06:52:48,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 181 treesize of output 243 [2022-11-19 06:52:48,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 39 [2022-11-19 06:52:48,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:52:48,141 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:52:48,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 102 [2022-11-19 06:52:48,187 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 06:52:52,090 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-19 06:52:52,114 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:53:42,309 WARN L233 SmtUtils]: Spent 40.06s on a formula simplification. DAG size of input: 494 DAG size of output: 187 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:54:32,737 WARN L233 SmtUtils]: Spent 38.23s on a formula simplification. DAG size of input: 491 DAG size of output: 183 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:54:32,961 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '394#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:54:32,961 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:54:32,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:54:32,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-11-19 06:54:32,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774642799] [2022-11-19 06:54:32,962 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-19 06:54:32,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 06:54:32,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:54:32,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 06:54:32,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=805, Unknown=6, NotChecked=58, Total=992 [2022-11-19 06:54:32,965 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:54:33,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:54:33,446 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-11-19 06:54:33,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-19 06:54:33,447 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-11-19 06:54:33,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:54:33,448 INFO L225 Difference]: With dead ends: 34 [2022-11-19 06:54:33,449 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 06:54:33,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 101.8s TimeCoverageRelationStatistics Valid=170, Invalid=1088, Unknown=6, NotChecked=68, Total=1332 [2022-11-19 06:54:33,450 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 43 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:54:33,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 69 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 64 Invalid, 0 Unknown, 68 Unchecked, 0.1s Time] [2022-11-19 06:54:33,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 06:54:33,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2022-11-19 06:54:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 06:54:33,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-19 06:54:33,458 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 18 [2022-11-19 06:54:33,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:54:33,458 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-19 06:54:33,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:54:33,458 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-19 06:54:33,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:54:33,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:54:33,459 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:54:33,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:54:33,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:54:33,663 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:54:33,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:54:33,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1886657850, now seen corresponding path program 2 times [2022-11-19 06:54:33,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:54:33,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223223181] [2022-11-19 06:54:33,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:33,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:54:33,686 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:54:33,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467942645] [2022-11-19 06:54:33,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:54:33,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:54:33,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:54:33,688 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:54:33,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:54:33,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 06:54:33,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:54:33,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:54:33,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:54:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:54:33,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:54:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:54:33,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:54:33,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223223181] [2022-11-19 06:54:33,939 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:54:33,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467942645] [2022-11-19 06:54:33,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467942645] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:54:33,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1160541668] [2022-11-19 06:54:33,942 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 06:54:33,942 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:54:33,942 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:54:33,942 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:54:33,942 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:54:34,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:54:34,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:54:34,095 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-19 06:54:34,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-19 06:54:34,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:54:34,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:54:34,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-19 06:54:34,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:54:34,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:54:34,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-11-19 06:54:34,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:54:34,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:54:34,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:54:34,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:54:34,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:54:34,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:54:34,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:54:34,311 INFO L321 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-11-19 06:54:34,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 362 treesize of output 348 [2022-11-19 06:54:34,399 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:54:34,416 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-19 06:54:34,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-11-19 06:54:34,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:54:35,127 INFO L321 Elim1Store]: treesize reduction 176, result has 51.6 percent of original size [2022-11-19 06:54:35,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 493 treesize of output 628 [2022-11-19 06:54:35,332 INFO L321 Elim1Store]: treesize reduction 37, result has 17.8 percent of original size [2022-11-19 06:54:35,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 199 treesize of output 261 [2022-11-19 06:54:35,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2022-11-19 06:54:35,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:54:35,417 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:54:35,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 119 [2022-11-19 06:54:35,478 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 06:54:42,676 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-19 06:54:42,697 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:55:32,173 WARN L233 SmtUtils]: Spent 42.67s on a formula simplification. DAG size of input: 916 DAG size of output: 251 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:56:20,988 WARN L233 SmtUtils]: Spent 40.96s on a formula simplification. DAG size of input: 913 DAG size of output: 190 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:56:21,255 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '628#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:56:21,255 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:56:21,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:56:21,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-19 06:56:21,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604135550] [2022-11-19 06:56:21,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:56:21,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 06:56:21,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:21,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 06:56:21,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=373, Unknown=6, NotChecked=0, Total=462 [2022-11-19 06:56:21,257 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:56:21,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:21,459 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-11-19 06:56:21,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 06:56:21,459 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2022-11-19 06:56:21,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:21,460 INFO L225 Difference]: With dead ends: 37 [2022-11-19 06:56:21,460 INFO L226 Difference]: Without dead ends: 24 [2022-11-19 06:56:21,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 98.7s TimeCoverageRelationStatistics Valid=105, Invalid=489, Unknown=6, NotChecked=0, Total=600 [2022-11-19 06:56:21,462 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:21,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 42 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:56:21,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-19 06:56:21,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2022-11-19 06:56:21,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:56:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-11-19 06:56:21,466 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 19 [2022-11-19 06:56:21,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:21,467 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-11-19 06:56:21,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:56:21,467 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-11-19 06:56:21,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:56:21,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:21,468 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:21,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:56:21,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:21,673 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:56:21,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:21,674 INFO L85 PathProgramCache]: Analyzing trace with hash 293090666, now seen corresponding path program 3 times [2022-11-19 06:56:21,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:21,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601560539] [2022-11-19 06:56:21,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:21,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:21,714 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:56:21,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170212721] [2022-11-19 06:56:21,714 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:56:21,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:21,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:21,716 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:21,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 06:56:21,788 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:56:21,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:56:21,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:56:21,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:21,890 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:56:21,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:56:21,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:56:21,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:21,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601560539] [2022-11-19 06:56:21,965 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:56:21,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170212721] [2022-11-19 06:56:21,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170212721] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:56:21,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1307115299] [2022-11-19 06:56:21,967 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 06:56:21,967 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:56:21,968 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:56:21,968 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:56:21,968 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:56:22,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:22,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:22,123 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-19 06:56:22,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-19 06:56:22,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:22,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:22,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-19 06:56:22,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:22,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:22,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-11-19 06:56:22,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:22,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:22,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:22,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:22,284 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:22,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:22,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:22,364 INFO L321 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-11-19 06:56:22,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 362 treesize of output 348 [2022-11-19 06:56:22,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:22,457 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-19 06:56:22,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-11-19 06:56:22,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:22,913 INFO L321 Elim1Store]: treesize reduction 176, result has 51.6 percent of original size [2022-11-19 06:56:22,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 493 treesize of output 628 [2022-11-19 06:56:23,358 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:23,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:23,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:23,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 495 treesize of output 1220 [2022-11-19 06:56:23,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:23,423 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:23,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 381 treesize of output 322 [2022-11-19 06:56:23,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:23,720 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 06:56:28,580 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-19 06:56:28,599 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:57:14,457 WARN L233 SmtUtils]: Spent 39.69s on a formula simplification. DAG size of input: 948 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:57:59,347 WARN L233 SmtUtils]: Spent 37.40s on a formula simplification. DAG size of input: 945 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:57:59,589 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '848#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:57:59,589 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:57:59,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:57:59,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-19 06:57:59,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858243577] [2022-11-19 06:57:59,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 06:57:59,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 06:57:59,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:57:59,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 06:57:59,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=376, Unknown=5, NotChecked=0, Total=462 [2022-11-19 06:57:59,591 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:57:59,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:57:59,775 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-11-19 06:57:59,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 06:57:59,783 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2022-11-19 06:57:59,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:57:59,785 INFO L225 Difference]: With dead ends: 24 [2022-11-19 06:57:59,785 INFO L226 Difference]: Without dead ends: 21 [2022-11-19 06:57:59,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 91.1s TimeCoverageRelationStatistics Valid=102, Invalid=493, Unknown=5, NotChecked=0, Total=600 [2022-11-19 06:57:59,788 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:57:59,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 29 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:57:59,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-19 06:57:59,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-19 06:57:59,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:57:59,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-11-19 06:57:59,802 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 19 [2022-11-19 06:57:59,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:57:59,802 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-11-19 06:57:59,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:57:59,802 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-11-19 06:57:59,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 06:57:59,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:57:59,803 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:57:59,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 06:58:00,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:58:00,007 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:58:00,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:00,008 INFO L85 PathProgramCache]: Analyzing trace with hash 495640602, now seen corresponding path program 4 times [2022-11-19 06:58:00,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:58:00,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036260283] [2022-11-19 06:58:00,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:00,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:58:00,026 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:58:00,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322721405] [2022-11-19 06:58:00,026 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:58:00,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:58:00,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:58:00,028 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:58:00,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 06:58:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:00,181 WARN L261 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-19 06:58:00,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:00,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-19 06:58:00,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:00,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2022-11-19 06:58:00,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-11-19 06:58:00,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2022-11-19 06:58:00,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2022-11-19 06:58:00,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 55 [2022-11-19 06:58:01,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:01,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 176 [2022-11-19 06:58:01,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 161 [2022-11-19 06:58:01,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:01,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:01,268 INFO L321 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-19 06:58:01,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 137 treesize of output 212 [2022-11-19 06:58:01,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:01,392 INFO L321 Elim1Store]: treesize reduction 57, result has 31.3 percent of original size [2022-11-19 06:58:01,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 33 treesize of output 45 [2022-11-19 06:58:01,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:01,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:01,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:58:01,921 INFO L321 Elim1Store]: treesize reduction 269, result has 40.5 percent of original size [2022-11-19 06:58:01,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 299 treesize of output 545 [2022-11-19 06:58:02,794 INFO L321 Elim1Store]: treesize reduction 102, result has 31.5 percent of original size [2022-11-19 06:58:02,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 255 treesize of output 140 [2022-11-19 06:58:05,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 441 treesize of output 397 [2022-11-19 06:58:07,502 INFO L321 Elim1Store]: treesize reduction 53, result has 67.1 percent of original size [2022-11-19 06:58:07,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 537 treesize of output 523 [2022-11-19 06:58:07,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 478 treesize of output 450 [2022-11-19 06:58:09,871 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:58:09,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:58:12,075 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse12 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse8 (<= .cse12 2147483647)) (.cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (.cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse13 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse14 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse13 .cse14 (+ (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse13 .cse14)))))) (.cse6 (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (.cse7 (* 4 .cse12))) (and (or (forall ((v_ArrVal_263 (Array Int Int)) (v_ArrVal_264 (Array Int Int))) (= (let ((.cse1 (let ((.cse5 (+ .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse5 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_264) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse5) .cse6))))) (let ((.cse0 (select (store .cse4 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse1) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse1 .cse2) (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse0 .cse3)))) 0)) (not .cse8)) (or .cse8 (forall ((v_ArrVal_263 (Array Int Int)) (v_ArrVal_264 (Array Int Int))) (= (let ((.cse9 (let ((.cse11 (+ (- 17179869184) .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse11 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_264) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse11) .cse6))))) (let ((.cse10 (select (store .cse4 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse9) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse9 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse10 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse9 .cse2) (select .cse10 .cse3)))) 0)))))) is different from false [2022-11-19 06:58:15,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:58:15,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036260283] [2022-11-19 06:58:15,984 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:58:15,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322721405] [2022-11-19 06:58:15,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322721405] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:58:15,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1965408515] [2022-11-19 06:58:15,986 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 06:58:15,986 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:58:15,987 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:58:15,987 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:58:15,987 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:58:16,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:16,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:16,236 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-19 06:58:16,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-19 06:58:16,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:16,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:16,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-19 06:58:16,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:16,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:16,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-19 06:58:16,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:16,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:16,447 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:58:16,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:58:16,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:58:16,652 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-11-19 06:58:16,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 355 treesize of output 353 [2022-11-19 06:58:16,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:58:16,964 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-19 06:58:16,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-11-19 06:58:17,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:17,663 INFO L321 Elim1Store]: treesize reduction 176, result has 51.6 percent of original size [2022-11-19 06:58:17,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 493 treesize of output 628 [2022-11-19 06:58:17,933 INFO L217 Elim1Store]: Index analysis took 103 ms [2022-11-19 06:58:18,268 INFO L321 Elim1Store]: treesize reduction 87, result has 28.7 percent of original size [2022-11-19 06:58:18,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 789 treesize of output 1112 [2022-11-19 06:58:18,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2022-11-19 06:58:18,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:18,768 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:58:18,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 4137 treesize of output 4085 [2022-11-19 06:58:18,861 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 06:58:18,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:58:18,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:58:18,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:58:18,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:58:18,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 701 treesize of output 2692 [2022-11-19 06:58:19,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:58:19,020 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:58:19,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 181 treesize of output 135 [2022-11-19 06:58:27,791 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-19 06:58:27,810 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:00:14,155 WARN L233 SmtUtils]: Spent 1.42m on a formula simplification. DAG size of input: 1295 DAG size of output: 453 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:53,429 WARN L233 SmtUtils]: Spent 1.36m on a formula simplification. DAG size of input: 1292 DAG size of output: 449 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:54,043 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1041#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:01:54,044 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:01:54,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:01:54,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-11-19 07:01:54,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300583353] [2022-11-19 07:01:54,044 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-19 07:01:54,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-19 07:01:54,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:54,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-19 07:01:54,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1028, Unknown=10, NotChecked=66, Total=1260 [2022-11-19 07:01:54,047 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:01:55,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:55,673 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2022-11-19 07:01:55,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-19 07:01:55,674 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-11-19 07:01:55,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:55,675 INFO L225 Difference]: With dead ends: 50 [2022-11-19 07:01:55,675 INFO L226 Difference]: Without dead ends: 47 [2022-11-19 07:01:55,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 214.8s TimeCoverageRelationStatistics Valid=191, Invalid=1285, Unknown=10, NotChecked=74, Total=1560 [2022-11-19 07:01:55,677 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 51 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:55,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 110 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 81 Unchecked, 0.3s Time] [2022-11-19 07:01:55,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-19 07:01:55,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 30. [2022-11-19 07:01:55,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:01:55,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-19 07:01:55,691 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2022-11-19 07:01:55,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:55,691 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-19 07:01:55,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:01:55,692 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-19 07:01:55,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 07:01:55,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:55,693 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:55,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:55,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 07:01:55,900 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:55,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:55,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1815245974, now seen corresponding path program 5 times [2022-11-19 07:01:55,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:55,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406205912] [2022-11-19 07:01:55,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:55,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:55,922 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:01:55,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174944083] [2022-11-19 07:01:55,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:01:55,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:55,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:55,935 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:55,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:01:56,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 07:01:56,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:01:56,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:01:56,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:01:56,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:01:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:01:56,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:56,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406205912] [2022-11-19 07:01:56,515 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:01:56,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174944083] [2022-11-19 07:01:56,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174944083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:01:56,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2119301251] [2022-11-19 07:01:56,518 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:01:56,518 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:01:56,518 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:01:56,519 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:01:56,519 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:01:56,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,842 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-19 07:01:56,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-19 07:01:56,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-19 07:01:56,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:56,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-19 07:01:57,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:57,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:57,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:57,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:57,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:57,339 INFO L321 Elim1Store]: treesize reduction 235, result has 16.4 percent of original size [2022-11-19 07:01:57,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 355 treesize of output 353 [2022-11-19 07:01:57,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:57,615 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-19 07:01:57,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-11-19 07:01:57,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:58,481 INFO L321 Elim1Store]: treesize reduction 176, result has 51.6 percent of original size [2022-11-19 07:01:58,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 493 treesize of output 628 [2022-11-19 07:01:58,765 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:01:58,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:58,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 9 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 1908 treesize of output 3133 [2022-11-19 07:01:58,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:58,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:58,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1753 treesize of output 1626 [2022-11-19 07:02:08,879 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-19 07:02:08,903 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:03:24,642 WARN L233 SmtUtils]: Spent 1.13m on a formula simplification. DAG size of input: 1896 DAG size of output: 526 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:04:47,437 WARN L233 SmtUtils]: Spent 1.24m on a formula simplification. DAG size of input: 1893 DAG size of output: 522 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:04:47,897 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1317#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 07:04:47,897 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:04:47,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:04:47,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-19 07:04:47,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890526039] [2022-11-19 07:04:47,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-19 07:04:47,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 07:04:47,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:47,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 07:04:47,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=490, Unknown=4, NotChecked=0, Total=600 [2022-11-19 07:04:47,900 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:04:48,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:48,358 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2022-11-19 07:04:48,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:04:48,359 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2022-11-19 07:04:48,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:48,360 INFO L225 Difference]: With dead ends: 53 [2022-11-19 07:04:48,361 INFO L226 Difference]: Without dead ends: 45 [2022-11-19 07:04:48,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 159.5s TimeCoverageRelationStatistics Valid=141, Invalid=667, Unknown=4, NotChecked=0, Total=812 [2022-11-19 07:04:48,362 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 42 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:48,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 47 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:04:48,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-19 07:04:48,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2022-11-19 07:04:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 07:04:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-11-19 07:04:48,376 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 21 [2022-11-19 07:04:48,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:48,376 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-11-19 07:04:48,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:04:48,377 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-11-19 07:04:48,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 07:04:48,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:48,378 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:04:48,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-19 07:04:48,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:04:48,579 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:48,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:48,580 INFO L85 PathProgramCache]: Analyzing trace with hash 323778874, now seen corresponding path program 6 times [2022-11-19 07:04:48,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:48,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306832998] [2022-11-19 07:04:48,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:48,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:48,600 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:04:48,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934976280] [2022-11-19 07:04:48,600 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:04:48,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:04:48,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:04:48,602 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:04:48,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5974a4c2-0d75-47b0-8cbd-3c033a43165b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 07:04:48,721 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:04:48,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:04:48,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:04:48,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:04:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:48,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:04:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:04:49,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:49,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306832998] [2022-11-19 07:04:49,176 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:04:49,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934976280] [2022-11-19 07:04:49,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934976280] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:04:49,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2096607336] [2022-11-19 07:04:49,178 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-19 07:04:49,179 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:04:49,179 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:04:49,179 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:04:49,180 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:04:49,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:49,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:49,495 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-19 07:04:49,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-19 07:04:49,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:49,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:49,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-19 07:04:49,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:49,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:49,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2022-11-19 07:04:49,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:49,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:49,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:49,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:49,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:49,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:49,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:49,789 INFO L321 Elim1Store]: treesize reduction 135, result has 12.9 percent of original size [2022-11-19 07:04:49,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 362 treesize of output 348 [2022-11-19 07:04:49,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:49,921 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-19 07:04:49,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2022-11-19 07:04:50,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:50,717 INFO L321 Elim1Store]: treesize reduction 176, result has 51.6 percent of original size [2022-11-19 07:04:50,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 493 treesize of output 628 [2022-11-19 07:04:50,753 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:04:50,908 INFO L217 Elim1Store]: Index analysis took 110 ms [2022-11-19 07:04:51,001 INFO L321 Elim1Store]: treesize reduction 37, result has 17.8 percent of original size [2022-11-19 07:04:51,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 188 treesize of output 250 [2022-11-19 07:04:51,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-11-19 07:04:51,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:51,126 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:04:51,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-11-19 07:04:54,570 INFO L321 Elim1Store]: treesize reduction 252, result has 53.9 percent of original size [2022-11-19 07:04:54,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 14 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 16 new quantified variables, introduced 29 case distinctions, treesize of input 2737 treesize of output 7676 [2022-11-19 07:04:56,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:56,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:56,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:56,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:56,548 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:56,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:56,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:56,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:56,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:56,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:56,792 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:56,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:56,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:56,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:56,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:56,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:56,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:56,877 INFO L217 Elim1Store]: Index analysis took 673 ms [2022-11-19 07:04:56,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 753 treesize of output 8196 [2022-11-19 07:05:01,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:04,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:05,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:06,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:07,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:08,085 INFO L217 Elim1Store]: Index analysis took 10747 ms [2022-11-19 07:05:08,255 INFO L321 Elim1Store]: treesize reduction 152, result has 0.7 percent of original size [2022-11-19 07:05:08,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 27 case distinctions, treesize of input 753 treesize of output 8196 [2022-11-19 07:05:14,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:14,896 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:05:14,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69538 treesize of output 69430 [2022-11-19 07:05:26,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69538 treesize of output 69460 [2022-11-19 07:05:26,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35213 treesize of output 35130