./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-optional-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-optional-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI --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 1c592bb1d39faa1e5f3d20603a8bfbb8fe6cff4de59ea35fafbddd50b8917b41 --- 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-5e519f3 [2022-11-03 04:03:03,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:03:03,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:03:03,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:03:03,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:03:03,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:03:03,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:03:03,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:03:03,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:03:03,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:03:03,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:03:03,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:03:03,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:03:03,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:03:03,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:03:03,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:03:03,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:03:03,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:03:03,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:03:03,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:03:03,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:03:03,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:03:03,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:03:03,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:03:03,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:03:03,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:03:03,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:03:03,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:03:03,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:03:03,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:03:03,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:03:03,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:03:03,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:03:03,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:03:03,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:03:03,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:03:03,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:03:03,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:03:03,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:03:03,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:03:03,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:03:03,335 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:03:03,381 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:03:03,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:03:03,386 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:03:03,386 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:03:03,387 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:03:03,388 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:03:03,388 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:03:03,388 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:03:03,388 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:03:03,389 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:03:03,390 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:03:03,390 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:03:03,391 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:03:03,391 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:03:03,391 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:03:03,391 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:03:03,392 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:03:03,392 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:03:03,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:03:03,393 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:03:03,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:03:03,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:03:03,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:03:03,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:03:03,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:03:03,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:03:03,394 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:03:03,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:03:03,395 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:03:03,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:03:03,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:03:03,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:03:03,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:03:03,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:03:03,399 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:03:03,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:03:03,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:03:03,399 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:03:03,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:03:03,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:03:03,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:03:03,400 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_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c592bb1d39faa1e5f3d20603a8bfbb8fe6cff4de59ea35fafbddd50b8917b41 [2022-11-03 04:03:03,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:03:03,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:03:03,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:03:03,816 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:03:03,817 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:03:03,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/forester-heap/dll-optional-1.i [2022-11-03 04:03:03,905 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/data/31a55accc/a738938ed14d4acbbbea5a68131ff0ee/FLAGfa6147de2 [2022-11-03 04:03:04,547 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:03:04,547 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/sv-benchmarks/c/forester-heap/dll-optional-1.i [2022-11-03 04:03:04,558 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/data/31a55accc/a738938ed14d4acbbbea5a68131ff0ee/FLAGfa6147de2 [2022-11-03 04:03:04,773 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/data/31a55accc/a738938ed14d4acbbbea5a68131ff0ee [2022-11-03 04:03:04,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:03:04,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:03:04,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:03:04,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:03:04,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:03:04,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:03:04" (1/1) ... [2022-11-03 04:03:04,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@344b1e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:04, skipping insertion in model container [2022-11-03 04:03:04,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:03:04" (1/1) ... [2022-11-03 04:03:04,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:03:04,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:03:05,186 WARN L230 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_5bbe01da-7a82-40bb-82af-a19a121d266c/sv-benchmarks/c/forester-heap/dll-optional-1.i[22753,22766] [2022-11-03 04:03:05,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:03:05,206 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:03:05,298 WARN L230 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_5bbe01da-7a82-40bb-82af-a19a121d266c/sv-benchmarks/c/forester-heap/dll-optional-1.i[22753,22766] [2022-11-03 04:03:05,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:03:05,351 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:03:05,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:05 WrapperNode [2022-11-03 04:03:05,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:03:05,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:03:05,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:03:05,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:03:05,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:05" (1/1) ... [2022-11-03 04:03:05,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:05" (1/1) ... [2022-11-03 04:03:05,420 INFO L138 Inliner]: procedures = 119, calls = 44, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 134 [2022-11-03 04:03:05,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:03:05,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:03:05,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:03:05,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:03:05,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:05" (1/1) ... [2022-11-03 04:03:05,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:05" (1/1) ... [2022-11-03 04:03:05,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:05" (1/1) ... [2022-11-03 04:03:05,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:05" (1/1) ... [2022-11-03 04:03:05,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:05" (1/1) ... [2022-11-03 04:03:05,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:05" (1/1) ... [2022-11-03 04:03:05,455 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:05" (1/1) ... [2022-11-03 04:03:05,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:05" (1/1) ... [2022-11-03 04:03:05,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:03:05,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:03:05,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:03:05,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:03:05,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:05" (1/1) ... [2022-11-03 04:03:05,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:03:05,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:03:05,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:03:05,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:03:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:03:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:03:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 04:03:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:03:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:03:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:03:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:03:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:03:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:03:05,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:03:05,685 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:03:05,687 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:03:06,078 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:03:06,379 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:03:06,379 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-03 04:03:06,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:03:06 BoogieIcfgContainer [2022-11-03 04:03:06,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:03:06,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:03:06,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:03:06,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:03:06,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:03:04" (1/3) ... [2022-11-03 04:03:06,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16068f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:03:06, skipping insertion in model container [2022-11-03 04:03:06,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:05" (2/3) ... [2022-11-03 04:03:06,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16068f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:03:06, skipping insertion in model container [2022-11-03 04:03:06,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:03:06" (3/3) ... [2022-11-03 04:03:06,399 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-optional-1.i [2022-11-03 04:03:06,424 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:03:06,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:03:06,478 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:03:06,485 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;@fb6432b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:03:06,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:03:06,490 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:06,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 04:03:06,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:06,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:06,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:03:06,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:06,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1506082116, now seen corresponding path program 1 times [2022-11-03 04:03:06,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:06,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993239655] [2022-11-03 04:03:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:06,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:06,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:03:06,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:06,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993239655] [2022-11-03 04:03:06,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993239655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:06,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:06,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:03:06,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626830957] [2022-11-03 04:03:06,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:06,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 04:03:06,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:03:06,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 04:03:06,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:03:06,962 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:07,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:07,470 INFO L93 Difference]: Finished difference Result 23 states and 33 transitions. [2022-11-03 04:03:07,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 04:03:07,473 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 04:03:07,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:07,481 INFO L225 Difference]: With dead ends: 23 [2022-11-03 04:03:07,481 INFO L226 Difference]: Without dead ends: 11 [2022-11-03 04:03:07,484 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 [2022-11-03 04:03:07,488 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:07,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 04:03:07,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-03 04:03:07,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-03 04:03:07,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-03 04:03:07,523 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2022-11-03 04:03:07,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:07,524 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-03 04:03:07,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:07,525 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-03 04:03:07,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 04:03:07,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:07,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:07,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:03:07,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:03:07,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:07,528 INFO L85 PathProgramCache]: Analyzing trace with hash 151022748, now seen corresponding path program 1 times [2022-11-03 04:03:07,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:07,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437544236] [2022-11-03 04:03:07,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:07,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:08,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:03:08,722 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.CCInterpolator.computeInterpolants(CCInterpolator.java:537) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:327) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:773) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:343) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:343) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:198) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:296) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:232) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 04:03:08,732 INFO L158 Benchmark]: Toolchain (without parser) took 3948.55ms. Allocated memory was 107.0MB in the beginning and 136.3MB in the end (delta: 29.4MB). Free memory was 68.0MB in the beginning and 90.3MB in the end (delta: -22.3MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. [2022-11-03 04:03:08,733 INFO L158 Benchmark]: CDTParser took 0.94ms. Allocated memory is still 107.0MB. Free memory was 85.4MB in the beginning and 85.3MB in the end (delta: 91.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:03:08,734 INFO L158 Benchmark]: CACSL2BoogieTranslator took 567.39ms. Allocated memory is still 107.0MB. Free memory was 67.8MB in the beginning and 75.9MB in the end (delta: -8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 04:03:08,736 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.31ms. Allocated memory is still 107.0MB. Free memory was 75.9MB in the beginning and 73.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:03:08,737 INFO L158 Benchmark]: Boogie Preprocessor took 38.83ms. Allocated memory is still 107.0MB. Free memory was 73.8MB in the beginning and 72.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:03:08,738 INFO L158 Benchmark]: RCFGBuilder took 922.14ms. Allocated memory is still 107.0MB. Free memory was 72.0MB in the beginning and 76.2MB in the end (delta: -4.2MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2022-11-03 04:03:08,742 INFO L158 Benchmark]: TraceAbstraction took 2339.77ms. Allocated memory was 107.0MB in the beginning and 136.3MB in the end (delta: 29.4MB). Free memory was 75.3MB in the beginning and 90.3MB in the end (delta: -15.0MB). Peak memory consumption was 57.8MB. Max. memory is 16.1GB. [2022-11-03 04:03:08,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.94ms. Allocated memory is still 107.0MB. Free memory was 85.4MB in the beginning and 85.3MB in the end (delta: 91.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 567.39ms. Allocated memory is still 107.0MB. Free memory was 67.8MB in the beginning and 75.9MB in the end (delta: -8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.31ms. Allocated memory is still 107.0MB. Free memory was 75.9MB in the beginning and 73.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.83ms. Allocated memory is still 107.0MB. Free memory was 73.8MB in the beginning and 72.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 922.14ms. Allocated memory is still 107.0MB. Free memory was 72.0MB in the beginning and 76.2MB in the end (delta: -4.2MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2339.77ms. Allocated memory was 107.0MB in the beginning and 136.3MB in the end (delta: 29.4MB). Free memory was 75.3MB in the beginning and 90.3MB in the end (delta: -15.0MB). Peak memory consumption was 57.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.CCInterpolator.computeInterpolants(CCInterpolator.java:537) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 04:03:08,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-optional-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI --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 1c592bb1d39faa1e5f3d20603a8bfbb8fe6cff4de59ea35fafbddd50b8917b41 --- 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-5e519f3 [2022-11-03 04:03:11,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:03:11,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:03:11,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:03:11,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:03:11,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:03:11,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:03:11,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:03:11,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:03:11,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:03:11,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:03:11,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:03:11,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:03:11,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:03:11,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:03:11,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:03:11,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:03:11,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:03:11,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:03:11,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:03:11,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:03:11,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:03:11,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:03:11,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:03:11,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:03:11,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:03:11,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:03:11,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:03:11,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:03:11,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:03:11,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:03:11,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:03:11,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:03:11,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:03:11,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:03:11,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:03:11,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:03:11,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:03:11,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:03:11,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:03:11,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:03:11,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 04:03:11,723 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:03:11,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:03:11,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:03:11,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:03:11,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:03:11,725 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:03:11,725 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:03:11,725 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:03:11,726 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:03:11,726 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:03:11,726 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:03:11,726 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:03:11,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:03:11,727 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:03:11,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:03:11,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:03:11,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:03:11,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:03:11,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:03:11,729 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 04:03:11,729 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 04:03:11,729 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 04:03:11,729 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:03:11,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:03:11,732 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:03:11,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:03:11,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:03:11,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 04:03:11,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:03:11,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:03:11,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:03:11,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:03:11,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:03:11,736 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 04:03:11,736 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 04:03:11,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:03:11,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:03:11,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 04:03:11,738 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c592bb1d39faa1e5f3d20603a8bfbb8fe6cff4de59ea35fafbddd50b8917b41 [2022-11-03 04:03:12,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:03:12,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:03:12,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:03:12,276 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:03:12,277 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:03:12,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/forester-heap/dll-optional-1.i [2022-11-03 04:03:12,378 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/data/0f94c40e0/03523777c8054f04b2e01345390e5f7e/FLAGea73dd484 [2022-11-03 04:03:13,091 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:03:13,092 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/sv-benchmarks/c/forester-heap/dll-optional-1.i [2022-11-03 04:03:13,136 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/data/0f94c40e0/03523777c8054f04b2e01345390e5f7e/FLAGea73dd484 [2022-11-03 04:03:13,403 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/data/0f94c40e0/03523777c8054f04b2e01345390e5f7e [2022-11-03 04:03:13,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:03:13,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:03:13,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:03:13,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:03:13,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:03:13,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:03:13" (1/1) ... [2022-11-03 04:03:13,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e0d9f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:13, skipping insertion in model container [2022-11-03 04:03:13,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:03:13" (1/1) ... [2022-11-03 04:03:13,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:03:13,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:03:13,848 WARN L230 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_5bbe01da-7a82-40bb-82af-a19a121d266c/sv-benchmarks/c/forester-heap/dll-optional-1.i[22753,22766] [2022-11-03 04:03:13,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:03:13,866 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:03:13,901 WARN L230 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_5bbe01da-7a82-40bb-82af-a19a121d266c/sv-benchmarks/c/forester-heap/dll-optional-1.i[22753,22766] [2022-11-03 04:03:13,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:03:13,929 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:03:13,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:13 WrapperNode [2022-11-03 04:03:13,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:03:13,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:03:13,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:03:13,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:03:13,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:13" (1/1) ... [2022-11-03 04:03:13,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:13" (1/1) ... [2022-11-03 04:03:14,006 INFO L138 Inliner]: procedures = 122, calls = 44, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 130 [2022-11-03 04:03:14,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:03:14,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:03:14,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:03:14,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:03:14,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:13" (1/1) ... [2022-11-03 04:03:14,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:13" (1/1) ... [2022-11-03 04:03:14,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:13" (1/1) ... [2022-11-03 04:03:14,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:13" (1/1) ... [2022-11-03 04:03:14,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:13" (1/1) ... [2022-11-03 04:03:14,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:13" (1/1) ... [2022-11-03 04:03:14,040 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:13" (1/1) ... [2022-11-03 04:03:14,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:13" (1/1) ... [2022-11-03 04:03:14,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:03:14,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:03:14,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:03:14,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:03:14,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:13" (1/1) ... [2022-11-03 04:03:14,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:03:14,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:03:14,104 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:03:14,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:03:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 04:03:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 04:03:14,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:03:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:03:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:03:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:03:14,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 04:03:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 04:03:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:03:14,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:03:14,357 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:03:14,360 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:03:14,961 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:03:14,967 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:03:14,974 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-03 04:03:14,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:03:14 BoogieIcfgContainer [2022-11-03 04:03:14,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:03:14,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:03:14,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:03:14,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:03:14,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:03:13" (1/3) ... [2022-11-03 04:03:14,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76edf7fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:03:14, skipping insertion in model container [2022-11-03 04:03:14,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:03:13" (2/3) ... [2022-11-03 04:03:14,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76edf7fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:03:14, skipping insertion in model container [2022-11-03 04:03:14,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:03:14" (3/3) ... [2022-11-03 04:03:14,992 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-optional-1.i [2022-11-03 04:03:15,012 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:03:15,012 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:03:15,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:03:15,096 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;@3a1bbd07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:03:15,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:03:15,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:15,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 04:03:15,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:15,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:15,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:03:15,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:15,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1712561739, now seen corresponding path program 1 times [2022-11-03 04:03:15,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:03:15,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406371622] [2022-11-03 04:03:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:15,137 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:03:15,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:03:15,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:03:15,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 04:03:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:15,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 04:03:15,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:03:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:03:15,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:03:15,359 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:03:15,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406371622] [2022-11-03 04:03:15,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406371622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:15,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:15,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:03:15,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327910530] [2022-11-03 04:03:15,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:15,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 04:03:15,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:03:15,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 04:03:15,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:03:15,407 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.6666666666666667) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:15,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:15,427 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2022-11-03 04:03:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 04:03:15,430 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 04:03:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:15,440 INFO L225 Difference]: With dead ends: 50 [2022-11-03 04:03:15,440 INFO L226 Difference]: Without dead ends: 21 [2022-11-03 04:03:15,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:03:15,448 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:15,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:03:15,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-03 04:03:15,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-03 04:03:15,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:15,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2022-11-03 04:03:15,502 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 15 [2022-11-03 04:03:15,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:15,503 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2022-11-03 04:03:15,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:15,503 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2022-11-03 04:03:15,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 04:03:15,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:15,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:15,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:03:15,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:03:15,719 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:03:15,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:15,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1397938948, now seen corresponding path program 1 times [2022-11-03 04:03:15,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:03:15,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939905579] [2022-11-03 04:03:15,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:15,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:03:15,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:03:15,723 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:03:15,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 04:03:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:15,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 04:03:15,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:03:15,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:03:15,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:03:15,900 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:03:15,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939905579] [2022-11-03 04:03:15,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939905579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:15,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:15,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:03:15,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598325036] [2022-11-03 04:03:15,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:15,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:03:15,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:03:15,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:03:15,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:03:15,905 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:15,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:15,941 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2022-11-03 04:03:15,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:03:15,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 04:03:15,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:15,947 INFO L225 Difference]: With dead ends: 24 [2022-11-03 04:03:15,947 INFO L226 Difference]: Without dead ends: 22 [2022-11-03 04:03:15,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:03:15,949 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:15,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:03:15,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-03 04:03:15,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-03 04:03:15,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2022-11-03 04:03:15,954 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 15 [2022-11-03 04:03:15,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:15,954 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2022-11-03 04:03:15,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2022-11-03 04:03:15,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 04:03:15,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:15,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:15,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 04:03:16,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:03:16,170 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:03:16,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:16,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1397937026, now seen corresponding path program 1 times [2022-11-03 04:03:16,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:03:16,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276563331] [2022-11-03 04:03:16,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:16,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:03:16,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:03:16,174 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:03:16,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 04:03:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:16,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 04:03:16,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:03:16,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 7 [2022-11-03 04:03:16,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:16,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:16,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 25 [2022-11-03 04:03:16,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:16,563 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2022-11-03 04:03:16,660 INFO L356 Elim1Store]: treesize reduction 19, result has 61.2 percent of original size [2022-11-03 04:03:16,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 52 [2022-11-03 04:03:16,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 37 [2022-11-03 04:03:16,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 13 [2022-11-03 04:03:16,822 INFO L356 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-03 04:03:16,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 1 [2022-11-03 04:03:16,850 INFO L356 Elim1Store]: treesize reduction 6, result has 62.5 percent of original size [2022-11-03 04:03:16,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2022-11-03 04:03:17,194 INFO L356 Elim1Store]: treesize reduction 35, result has 7.9 percent of original size [2022-11-03 04:03:17,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 122 treesize of output 62 [2022-11-03 04:03:17,230 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-03 04:03:17,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 26 [2022-11-03 04:03:17,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:03:17,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:03:17,269 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:03:17,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276563331] [2022-11-03 04:03:17,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276563331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:17,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:17,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:03:17,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618015130] [2022-11-03 04:03:17,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:17,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:03:17,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:03:17,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:03:17,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:03:17,275 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:19,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:19,106 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2022-11-03 04:03:19,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 04:03:19,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 04:03:19,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:19,108 INFO L225 Difference]: With dead ends: 67 [2022-11-03 04:03:19,108 INFO L226 Difference]: Without dead ends: 54 [2022-11-03 04:03:19,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:03:19,110 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 89 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:19,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 68 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 04:03:19,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-03 04:03:19,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 32. [2022-11-03 04:03:19,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 31 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:19,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2022-11-03 04:03:19,122 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 15 [2022-11-03 04:03:19,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:19,122 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2022-11-03 04:03:19,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:19,123 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2022-11-03 04:03:19,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 04:03:19,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:19,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:19,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:03:19,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:03:19,331 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:03:19,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:19,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1396089984, now seen corresponding path program 1 times [2022-11-03 04:03:19,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:03:19,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706387058] [2022-11-03 04:03:19,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:19,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:03:19,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:03:19,333 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:03:19,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 04:03:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:19,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 04:03:19,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:03:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:03:19,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:03:19,741 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:03:19,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706387058] [2022-11-03 04:03:19,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706387058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:19,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:19,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 04:03:19,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775529765] [2022-11-03 04:03:19,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:19,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 04:03:19,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:03:19,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 04:03:19,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:03:19,743 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:21,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:21,540 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2022-11-03 04:03:21,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:03:21,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 04:03:21,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:21,542 INFO L225 Difference]: With dead ends: 65 [2022-11-03 04:03:21,542 INFO L226 Difference]: Without dead ends: 63 [2022-11-03 04:03:21,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:03:21,544 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 77 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:21,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 62 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 04:03:21,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-03 04:03:21,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 41. [2022-11-03 04:03:21,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.4) internal successors, (56), 40 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:21,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 56 transitions. [2022-11-03 04:03:21,555 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 56 transitions. Word has length 15 [2022-11-03 04:03:21,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:21,556 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 56 transitions. [2022-11-03 04:03:21,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:21,556 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 56 transitions. [2022-11-03 04:03:21,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 04:03:21,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:21,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:21,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:03:21,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:03:21,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:03:21,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:21,771 INFO L85 PathProgramCache]: Analyzing trace with hash 378917378, now seen corresponding path program 1 times [2022-11-03 04:03:21,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:03:21,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712715313] [2022-11-03 04:03:21,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:21,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:03:21,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:03:21,774 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:03:21,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 04:03:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:21,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:03:21,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:03:21,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 7 [2022-11-03 04:03:21,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2022-11-03 04:03:21,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:21,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-03 04:03:21,991 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-03 04:03:21,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-03 04:03:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:03:22,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:03:22,065 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:03:22,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712715313] [2022-11-03 04:03:22,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712715313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:22,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:22,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:03:22,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541884947] [2022-11-03 04:03:22,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:22,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:03:22,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:03:22,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:03:22,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:03:22,067 INFO L87 Difference]: Start difference. First operand 41 states and 56 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:22,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:22,932 INFO L93 Difference]: Finished difference Result 74 states and 96 transitions. [2022-11-03 04:03:22,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:03:22,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 04:03:22,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:22,933 INFO L225 Difference]: With dead ends: 74 [2022-11-03 04:03:22,933 INFO L226 Difference]: Without dead ends: 57 [2022-11-03 04:03:22,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:03:22,935 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 71 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:22,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 69 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 04:03:22,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-03 04:03:22,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2022-11-03 04:03:22,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.368421052631579) internal successors, (52), 38 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:22,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 52 transitions. [2022-11-03 04:03:22,947 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 52 transitions. Word has length 15 [2022-11-03 04:03:22,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:22,947 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 52 transitions. [2022-11-03 04:03:22,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:22,948 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 52 transitions. [2022-11-03 04:03:22,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 04:03:22,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:22,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:22,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 04:03:23,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:03:23,163 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:03:23,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:23,163 INFO L85 PathProgramCache]: Analyzing trace with hash -513797694, now seen corresponding path program 1 times [2022-11-03 04:03:23,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:03:23,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384912740] [2022-11-03 04:03:23,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:23,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:03:23,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:03:23,166 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:03:23,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 04:03:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:23,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 04:03:23,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:03:23,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:03:23,314 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:03:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:03:23,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:03:23,467 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:03:23,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384912740] [2022-11-03 04:03:23,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384912740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:23,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:23,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:03:23,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417129797] [2022-11-03 04:03:23,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:23,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:03:23,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:03:23,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:03:23,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:03:23,470 INFO L87 Difference]: Start difference. First operand 39 states and 52 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:25,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:25,588 INFO L93 Difference]: Finished difference Result 106 states and 143 transitions. [2022-11-03 04:03:25,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 04:03:25,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 04:03:25,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:25,590 INFO L225 Difference]: With dead ends: 106 [2022-11-03 04:03:25,591 INFO L226 Difference]: Without dead ends: 93 [2022-11-03 04:03:25,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:03:25,592 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 80 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:25,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 132 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-03 04:03:25,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-03 04:03:25,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 48. [2022-11-03 04:03:25,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 47 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:25,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2022-11-03 04:03:25,608 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 16 [2022-11-03 04:03:25,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:25,608 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2022-11-03 04:03:25,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:25,609 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2022-11-03 04:03:25,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 04:03:25,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:25,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:25,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 04:03:25,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:03:25,824 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:03:25,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:25,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1263056710, now seen corresponding path program 1 times [2022-11-03 04:03:25,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:03:25,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375229175] [2022-11-03 04:03:25,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:25,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:03:25,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:03:25,830 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:03:25,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 04:03:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:25,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 04:03:25,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:03:25,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:03:25,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 04:03:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:03:26,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:03:26,103 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:03:26,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375229175] [2022-11-03 04:03:26,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375229175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:03:26,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:03:26,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:03:26,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479702250] [2022-11-03 04:03:26,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:03:26,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:03:26,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:03:26,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:03:26,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:03:26,105 INFO L87 Difference]: Start difference. First operand 48 states and 63 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:27,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:27,623 INFO L93 Difference]: Finished difference Result 78 states and 100 transitions. [2022-11-03 04:03:27,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:03:27,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-03 04:03:27,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:27,625 INFO L225 Difference]: With dead ends: 78 [2022-11-03 04:03:27,625 INFO L226 Difference]: Without dead ends: 76 [2022-11-03 04:03:27,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:03:27,626 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 56 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:27,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 92 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 04:03:27,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-03 04:03:27,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 48. [2022-11-03 04:03:27,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 47 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:27,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2022-11-03 04:03:27,639 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 16 [2022-11-03 04:03:27,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:27,639 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2022-11-03 04:03:27,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:03:27,640 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2022-11-03 04:03:27,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 04:03:27,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:27,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:27,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 04:03:27,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:03:27,859 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:03:27,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:27,859 INFO L85 PathProgramCache]: Analyzing trace with hash -871782213, now seen corresponding path program 1 times [2022-11-03 04:03:27,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:03:27,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497126926] [2022-11-03 04:03:27,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:27,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:03:27,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:03:27,861 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:03:27,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 04:03:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:28,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-03 04:03:28,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:03:28,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 7 [2022-11-03 04:03:28,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:28,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2022-11-03 04:03:28,267 INFO L356 Elim1Store]: treesize reduction 34, result has 34.6 percent of original size [2022-11-03 04:03:28,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 39 [2022-11-03 04:03:28,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2022-11-03 04:03:28,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:28,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:28,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:28,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2022-11-03 04:03:28,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:28,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:28,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:28,561 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:03:28,561 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 64 [2022-11-03 04:03:28,620 INFO L356 Elim1Store]: treesize reduction 71, result has 13.4 percent of original size [2022-11-03 04:03:28,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 104 treesize of output 97 [2022-11-03 04:03:28,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 04:03:28,740 INFO L356 Elim1Store]: treesize reduction 40, result has 63.3 percent of original size [2022-11-03 04:03:28,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 100 [2022-11-03 04:03:28,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 04:03:28,883 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-11-03 04:03:28,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:28,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:28,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-11-03 04:03:28,974 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 04:03:29,056 INFO L356 Elim1Store]: treesize reduction 78, result has 35.5 percent of original size [2022-11-03 04:03:29,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 40 treesize of output 67 [2022-11-03 04:03:29,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:29,671 INFO L356 Elim1Store]: treesize reduction 166, result has 22.8 percent of original size [2022-11-03 04:03:29,672 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:03:29,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497126926] [2022-11-03 04:03:29,673 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: var is still there: |v_#memory_$Pointer$.base_55| input size 87 context size 87 output size 87 [2022-11-03 04:03:29,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [149250739] [2022-11-03 04:03:29,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:29,673 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:03:29,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:03:29,676 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:03:29,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bbe01da-7a82-40bb-82af-a19a121d266c/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-03 04:03:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:30,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-03 04:03:30,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:03:30,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 6 treesize of output 7 [2022-11-03 04:03:30,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:30,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:30,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 25 [2022-11-03 04:03:30,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:30,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:30,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 25 [2022-11-03 04:03:30,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2022-11-03 04:03:30,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:30,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 42 [2022-11-03 04:03:30,448 INFO L356 Elim1Store]: treesize reduction 34, result has 34.6 percent of original size [2022-11-03 04:03:30,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 39 [2022-11-03 04:03:30,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 28 [2022-11-03 04:03:30,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 13 [2022-11-03 04:03:30,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 9 [2022-11-03 04:03:30,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:30,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:30,641 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 04:03:30,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 60 [2022-11-03 04:03:30,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:30,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:30,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 47 [2022-11-03 04:03:30,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 5 treesize of output 3 [2022-11-03 04:03:30,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:30,718 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-03 04:03:30,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 56 treesize of output 58 [2022-11-03 04:03:30,774 INFO L356 Elim1Store]: treesize reduction 62, result has 36.1 percent of original size [2022-11-03 04:03:30,774 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 32 treesize of output 55 [2022-11-03 04:03:30,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 34 [2022-11-03 04:03:30,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2022-11-03 04:03:30,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2022-11-03 04:03:30,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:30,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:30,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:30,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:30,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 46 [2022-11-03 04:03:31,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:31,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:31,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:31,051 INFO L356 Elim1Store]: treesize reduction 66, result has 7.0 percent of original size [2022-11-03 04:03:31,051 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 78 [2022-11-03 04:03:31,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 13 [2022-11-03 04:03:31,141 INFO L356 Elim1Store]: treesize reduction 18, result has 67.3 percent of original size [2022-11-03 04:03:31,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 55 [2022-11-03 04:03:31,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 13 [2022-11-03 04:03:32,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:03:32,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:03:32,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:03:32,041 INFO L356 Elim1Store]: treesize reduction 70, result has 4.1 percent of original size [2022-11-03 04:03:32,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 184 treesize of output 94 [2022-11-03 04:03:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:03:32,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:03:32,782 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:03:32,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 147 [2022-11-03 04:03:32,805 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:03:32,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 180 [2022-11-03 04:03:32,981 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv8 32))) (.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_arrayElimArr_16 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (select v_arrayElimArr_16 .cse0) (_ bv0 32))) (forall ((v_arrayElimArr_15 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select v_arrayElimArr_15 .cse0))) (or (not (= (_ bv0 1) (select |c_#valid| .cse1))) (forall ((v_ArrVal_554 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_555 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (let ((.cse2 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_15) .cse1 (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_555) .cse1) (_ bv0 32) (_ bv0 32))))) (select .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~head~0#1.base|) .cse3))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_16) .cse1 (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_554) .cse1) (_ bv0 32) (_ bv0 32))) |c_ULTIMATE.start_main_~head~0#1.base|) .cse3)) (_ bv0 32)))))))) (forall ((v_arrayElimArr_16 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (select v_arrayElimArr_16 .cse0) (_ bv0 32))) (forall ((v_arrayElimArr_15 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select v_arrayElimArr_15 .cse0))) (or (not (= (_ bv0 1) (select |c_#valid| .cse4))) (forall ((v_ArrVal_554 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_555 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse5 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_16) .cse4 (store (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_554) .cse4) (_ bv0 32) (_ bv0 32))))) (select (select .cse5 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_arrayElimArr_15) .cse4 (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_555) .cse4) (_ bv0 32) (_ bv0 32))) |c_ULTIMATE.start_main_~head~0#1.base|) .cse3)) (select (select .cse5 |c_ULTIMATE.start_main_~head~0#1.base|) .cse3))) (_ bv0 32)))))))))) is different from false [2022-11-03 04:03:33,942 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse7 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse1 (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv8 32))) (.cse5 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|)) (.cse10 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~x~0#1.offset| (_ bv0 32))))) (and (forall ((v_ArrVal_534 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ArrVal_534))) (forall ((v_ArrVal_541 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_542 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_528 (_ BitVec 32)) (v_ArrVal_527 (_ BitVec 32)) (v_ArrVal_544 (_ BitVec 32)) (v_ArrVal_539 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_16 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_530 (_ BitVec 32))) (let ((.cse9 (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_541) v_ArrVal_534 (store (select .cse10 v_ArrVal_534) (_ bv4 32) v_ArrVal_530)) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) (_ bv8 32)))) (or (forall ((v_arrayElimArr_15 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select v_arrayElimArr_15 .cse9))) (or (forall ((v_ArrVal_554 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_555 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse3 (select (select (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_534)))) (store .cse8 v_ArrVal_534 (store (select .cse8 v_ArrVal_534) (_ bv4 32) v_ArrVal_528))) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (select (let ((.cse0 (let ((.cse2 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_544)) v_ArrVal_534 v_ArrVal_542))) (store (store .cse2 .cse3 v_arrayElimArr_15) .cse4 (store (select (store .cse2 .cse3 v_ArrVal_555) .cse4) (_ bv0 32) (_ bv0 32)))))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) .cse1))) (select (select (let ((.cse6 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_527)) v_ArrVal_534 v_ArrVal_539))) (store (store .cse6 .cse3 v_arrayElimArr_16) .cse4 (store (select (store .cse6 .cse3 v_ArrVal_554) .cse4) (_ bv0 32) (_ bv0 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1))) (_ bv0 32))) (not (= (select (store |c_#valid| v_ArrVal_534 (_ bv1 1)) .cse4) (_ bv0 1)))))) (not (= (select v_arrayElimArr_16 .cse9) (_ bv0 32)))))))) (forall ((v_ArrVal_534 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ArrVal_534))) (forall ((v_ArrVal_541 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_542 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_528 (_ BitVec 32)) (v_ArrVal_527 (_ BitVec 32)) (v_ArrVal_544 (_ BitVec 32)) (v_ArrVal_539 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_16 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_530 (_ BitVec 32))) (let ((.cse11 (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_541) v_ArrVal_534 (store (select .cse10 v_ArrVal_534) (_ bv4 32) v_ArrVal_530)) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) (_ bv8 32)))) (or (not (= (select v_arrayElimArr_16 .cse11) (_ bv0 32))) (forall ((v_arrayElimArr_15 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse15 (select v_arrayElimArr_15 .cse11))) (or (forall ((v_ArrVal_554 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_555 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse14 (select (select (let ((.cse17 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_534)))) (store .cse17 v_ArrVal_534 (store (select .cse17 v_ArrVal_534) (_ bv4 32) v_ArrVal_528))) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (let ((.cse12 (let ((.cse16 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_527)) v_ArrVal_534 v_ArrVal_539))) (store (store .cse16 .cse14 v_arrayElimArr_16) .cse15 (store (select (store .cse16 .cse14 v_ArrVal_554) .cse15) (_ bv0 32) (_ bv0 32)))))) (select (select .cse12 (select (select (let ((.cse13 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_544)) v_ArrVal_534 v_ArrVal_542))) (store (store .cse13 .cse14 v_arrayElimArr_15) .cse15 (store (select (store .cse13 .cse14 v_ArrVal_555) .cse15) (_ bv0 32) (_ bv0 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1)) (select (select .cse12 |c_ULTIMATE.start_main_~head~0#1.base|) .cse1)))) (_ bv0 32))) (not (= (select (store |c_#valid| v_ArrVal_534 (_ bv1 1)) .cse15) (_ bv0 1)))))))))))))) is different from false [2022-11-03 04:03:35,467 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse8 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base|))) (let ((.cse6 (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv8 32))) (.cse5 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|)) (.cse10 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv0 32))))) (and (forall ((v_ArrVal_534 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ArrVal_534))) (forall ((v_ArrVal_541 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_542 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_528 (_ BitVec 32)) (v_ArrVal_527 (_ BitVec 32)) (v_ArrVal_544 (_ BitVec 32)) (v_ArrVal_539 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_16 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_530 (_ BitVec 32))) (let ((.cse0 (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_541) v_ArrVal_534 (store (select .cse10 v_ArrVal_534) (_ bv4 32) v_ArrVal_530)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (or (not (= (select v_arrayElimArr_16 .cse0) (_ bv0 32))) (forall ((v_arrayElimArr_15 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select v_arrayElimArr_15 .cse0))) (or (not (= (_ bv0 1) (select (store |c_#valid| v_ArrVal_534 (_ bv1 1)) .cse1))) (forall ((v_ArrVal_554 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_555 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse4 (select (select (let ((.cse9 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_534)))) (store .cse9 v_ArrVal_534 (store (select .cse9 v_ArrVal_534) (_ bv4 32) v_ArrVal_528))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (let ((.cse2 (let ((.cse7 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_527)) v_ArrVal_534 v_ArrVal_539))) (store (store .cse7 .cse4 v_arrayElimArr_16) .cse1 (store (select (store .cse7 .cse4 v_ArrVal_554) .cse1) (_ bv0 32) (_ bv0 32)))))) (select (select .cse2 (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_544)) v_ArrVal_534 v_ArrVal_542))) (store (store .cse3 .cse4 v_arrayElimArr_15) .cse1 (store (select (store .cse3 .cse4 v_ArrVal_555) .cse1) (_ bv0 32) (_ bv0 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) .cse6)) (select (select .cse2 |c_ULTIMATE.start_main_~head~0#1.base|) .cse6)))) (_ bv0 32))))))))))) (forall ((v_ArrVal_534 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ArrVal_534))) (forall ((v_ArrVal_541 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_542 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_528 (_ BitVec 32)) (v_ArrVal_527 (_ BitVec 32)) (v_ArrVal_544 (_ BitVec 32)) (v_ArrVal_539 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_16 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_530 (_ BitVec 32))) (let ((.cse17 (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base| v_ArrVal_541) v_ArrVal_534 (store (select .cse10 v_ArrVal_534) (_ bv4 32) v_ArrVal_530)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (or (forall ((v_arrayElimArr_15 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (select v_arrayElimArr_15 .cse17))) (or (not (= (_ bv0 1) (select (store |c_#valid| v_ArrVal_534 (_ bv1 1)) .cse11))) (forall ((v_ArrVal_554 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_555 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (let ((.cse14 (select (select (let ((.cse16 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_534)))) (store .cse16 v_ArrVal_534 (store (select .cse16 v_ArrVal_534) (_ bv4 32) v_ArrVal_528))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (let ((.cse12 (let ((.cse13 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_544)) v_ArrVal_534 v_ArrVal_542))) (store (store .cse13 .cse14 v_arrayElimArr_15) .cse11 (store (select (store .cse13 .cse14 v_ArrVal_555) .cse11) (_ bv0 32) (_ bv0 32)))))) (select .cse12 (select (select .cse12 |c_ULTIMATE.start_main_~head~0#1.base|) .cse6))) (select (select (let ((.cse15 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~head~0#1.offset| v_ArrVal_527)) v_ArrVal_534 v_ArrVal_539))) (store (store .cse15 .cse14 v_arrayElimArr_16) .cse11 (store (select (store .cse15 .cse14 v_ArrVal_554) .cse11) (_ bv0 32) (_ bv0 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) .cse6)))))))) (not (= (select v_arrayElimArr_16 .cse17) (_ bv0 32))))))))))) is different from false [2022-11-03 04:04:45,754 WARN L234 SmtUtils]: Spent 1.16m on a formula simplification. DAG size of input: 26 DAG size of output: 23 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 04:04:45,754 INFO L356 Elim1Store]: treesize reduction 15, result has 67.4 percent of original size [2022-11-03 04:04:45,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 6747 treesize of output 5458