./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9 --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 aa70df64230ecddb2965be82bddd3a5869e70ae49ad8ed2ef9f27fa2ce4c5f93 --- 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-6b4ec56 [2022-11-20 20:10:41,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:10:41,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:10:41,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:10:41,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:10:41,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:10:41,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:10:41,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:10:41,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:10:41,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:10:41,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:10:41,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:10:41,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:10:41,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:10:41,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:10:41,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:10:41,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:10:41,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:10:41,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:10:41,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:10:41,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:10:41,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:10:41,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:10:41,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:10:41,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:10:41,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:10:41,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:10:41,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:10:41,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:10:41,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:10:41,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:10:41,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:10:41,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:10:41,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:10:41,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:10:41,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:10:41,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:10:41,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:10:41,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:10:41,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:10:41,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:10:41,340 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:10:41,366 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:10:41,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:10:41,367 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:10:41,367 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:10:41,368 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:10:41,368 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:10:41,368 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:10:41,369 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:10:41,369 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:10:41,369 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:10:41,369 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:10:41,369 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:10:41,370 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:10:41,370 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:10:41,370 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:10:41,370 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:10:41,371 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:10:41,371 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:10:41,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:10:41,372 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:10:41,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:10:41,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:10:41,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:10:41,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:10:41,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:10:41,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:10:41,373 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:10:41,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:10:41,374 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:10:41,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:10:41,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:10:41,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:10:41,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:10:41,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:10:41,375 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:10:41,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:10:41,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:10:41,376 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:10:41,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:10:41,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:10:41,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:10:41,377 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_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa70df64230ecddb2965be82bddd3a5869e70ae49ad8ed2ef9f27fa2ce4c5f93 [2022-11-20 20:10:41,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:10:41,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:10:41,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:10:41,815 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:10:41,816 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:10:41,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i [2022-11-20 20:10:45,546 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:10:45,765 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:10:45,766 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i [2022-11-20 20:10:45,774 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/data/591fe6141/3a890d2cd7af44819de375fedfbb4743/FLAG967fa6117 [2022-11-20 20:10:45,792 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/data/591fe6141/3a890d2cd7af44819de375fedfbb4743 [2022-11-20 20:10:45,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:10:45,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:10:45,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:10:45,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:10:45,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:10:45,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:10:45" (1/1) ... [2022-11-20 20:10:45,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a3a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:45, skipping insertion in model container [2022-11-20 20:10:45,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:10:45" (1/1) ... [2022-11-20 20:10:45,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:10:45,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:10:46,101 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i[865,878] [2022-11-20 20:10:46,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:10:48,593 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:10:48,610 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i[865,878] [2022-11-20 20:10:48,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:10:48,650 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:10:48,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:48 WrapperNode [2022-11-20 20:10:48,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:10:48,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:10:48,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:10:48,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:10:48,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:48" (1/1) ... [2022-11-20 20:10:48,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:48" (1/1) ... [2022-11-20 20:10:48,690 INFO L138 Inliner]: procedures = 16, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2022-11-20 20:10:48,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:10:48,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:10:48,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:10:48,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:10:48,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:48" (1/1) ... [2022-11-20 20:10:48,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:48" (1/1) ... [2022-11-20 20:10:48,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:48" (1/1) ... [2022-11-20 20:10:48,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:48" (1/1) ... [2022-11-20 20:10:48,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:48" (1/1) ... [2022-11-20 20:10:48,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:48" (1/1) ... [2022-11-20 20:10:48,724 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:48" (1/1) ... [2022-11-20 20:10:48,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:48" (1/1) ... [2022-11-20 20:10:48,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:10:48,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:10:48,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:10:48,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:10:48,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:48" (1/1) ... [2022-11-20 20:10:48,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:10:48,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:10:48,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:10:48,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:10:48,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:10:48,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:10:48,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:10:48,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:10:48,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:10:48,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:10:48,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:10:48,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:10:48,953 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:10:48,955 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:10:49,130 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:10:49,194 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:10:49,194 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 20:10:49,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:10:49 BoogieIcfgContainer [2022-11-20 20:10:49,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:10:49,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:10:49,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:10:49,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:10:49,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:10:45" (1/3) ... [2022-11-20 20:10:49,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660183e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:10:49, skipping insertion in model container [2022-11-20 20:10:49,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:10:48" (2/3) ... [2022-11-20 20:10:49,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660183e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:10:49, skipping insertion in model container [2022-11-20 20:10:49,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:10:49" (3/3) ... [2022-11-20 20:10:49,208 INFO L112 eAbstractionObserver]: Analyzing ICFG array_of_struct_single_elem_init.i [2022-11-20 20:10:49,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:10:49,233 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:10:49,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:10:49,298 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;@3d39b71a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:10:49,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:10:49,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:10:49,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 20:10:49,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:10:49,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 20:10:49,313 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:10:49,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:10:49,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1506668624, now seen corresponding path program 1 times [2022-11-20 20:10:49,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:10:49,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393871660] [2022-11-20 20:10:49,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:49,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:10:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:10:49,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:10:49,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393871660] [2022-11-20 20:10:49,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393871660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:10:49,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:10:49,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:10:49,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059453623] [2022-11-20 20:10:49,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:10:49,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:10:49,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:10:49,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:10:49,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:10:49,766 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-20 20:10:49,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:10:49,820 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2022-11-20 20:10:49,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:10:49,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-11-20 20:10:49,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:10:49,850 INFO L225 Difference]: With dead ends: 26 [2022-11-20 20:10:49,851 INFO L226 Difference]: Without dead ends: 17 [2022-11-20 20:10:49,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:10:49,858 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:10:49,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 12 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:10:49,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-20 20:10:49,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 10. [2022-11-20 20:10:49,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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) [2022-11-20 20:10:49,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2022-11-20 20:10:49,940 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2022-11-20 20:10:49,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:10:49,941 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-11-20 20:10:49,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-20 20:10:49,941 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2022-11-20 20:10:49,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 20:10:49,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:10:49,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:10:49,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:10:49,959 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:10:49,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:10:49,960 INFO L85 PathProgramCache]: Analyzing trace with hash 486073672, now seen corresponding path program 1 times [2022-11-20 20:10:49,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:10:49,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076452161] [2022-11-20 20:10:49,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:49,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:10:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:10:50,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:10:50,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076452161] [2022-11-20 20:10:50,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076452161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:10:50,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823212082] [2022-11-20 20:10:50,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:10:50,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:10:50,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:10:50,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:10:50,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:10:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:10:50,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:10:50,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:10:50,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:10:50,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:10:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:10:50,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823212082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:10:50,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1741553267] [2022-11-20 20:10:50,458 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-20 20:10:50,458 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:10:50,464 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:10:50,471 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:10:50,472 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:10:50,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2022-11-20 20:10:50,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:50,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:50,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:50,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-20 20:10:50,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:50,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:50,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:50,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2022-11-20 20:10:50,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:50,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:50,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 81 [2022-11-20 20:10:50,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 64 [2022-11-20 20:10:51,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:51,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:51,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:51,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:51,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 194 [2022-11-20 20:10:51,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:51,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:51,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:51,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:51,155 INFO L350 Elim1Store]: Elim1 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 108 treesize of output 74 [2022-11-20 20:10:51,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 53 treesize of output 14 [2022-11-20 20:10:51,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-20 20:10:51,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-20 20:10:51,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 53 [2022-11-20 20:10:51,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 20:10:51,874 INFO L321 Elim1Store]: treesize reduction 90, result has 28.6 percent of original size [2022-11-20 20:10:51,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 158 treesize of output 227 [2022-11-20 20:10:51,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 51 treesize of output 132 [2022-11-20 20:10:52,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:52,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:52,204 INFO L321 Elim1Store]: treesize reduction 86, result has 23.9 percent of original size [2022-11-20 20:10:52,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1079 treesize of output 1156 [2022-11-20 20:10:52,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:10:52,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 147 [2022-11-20 20:10:52,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:52,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:52,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:52,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:52,886 INFO L321 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2022-11-20 20:10:52,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 343 treesize of output 995 [2022-11-20 20:10:53,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 1892 treesize of output 6007 [2022-11-20 20:10:53,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:10:53,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:10:53,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 945 treesize of output 1324 [2022-11-20 20:10:53,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:10:53,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:10:53,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:10:53,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:10:53,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:10:53,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:10:53,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:10:53,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 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 420 treesize of output 3298 [2022-11-20 20:10:54,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:10:54,121 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:10:56,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:56,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:10:56,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:10:56,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 165 [2022-11-20 20:10:56,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:56,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:57,476 INFO L321 Elim1Store]: treesize reduction 198, result has 17.2 percent of original size [2022-11-20 20:10:57,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 17436 treesize of output 17633 [2022-11-20 20:10:59,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:10:59,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:00,074 INFO L321 Elim1Store]: treesize reduction 148, result has 6.9 percent of original size [2022-11-20 20:11:00,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 31095 treesize of output 14707 [2022-11-20 20:11:03,191 INFO L321 Elim1Store]: treesize reduction 81, result has 18.2 percent of original size [2022-11-20 20:11:03,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 934 treesize of output 743 [2022-11-20 20:11:03,293 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:03,818 INFO L217 Elim1Store]: Index analysis took 425 ms [2022-11-20 20:11:03,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 97 [2022-11-20 20:11:03,882 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:03,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 98 treesize of output 11 [2022-11-20 20:11:04,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:04,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:04,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 849 treesize of output 1336 [2022-11-20 20:11:04,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:04,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:05,870 INFO L321 Elim1Store]: treesize reduction 182, result has 21.9 percent of original size [2022-11-20 20:11:05,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 663 treesize of output 980 [2022-11-20 20:11:06,101 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:06,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:06,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:06,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:06,304 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:06,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:06,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:06,380 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:06,380 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:06,381 INFO L217 Elim1Store]: Index analysis took 166 ms [2022-11-20 20:11:06,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 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 213 treesize of output 796 [2022-11-20 20:11:06,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:06,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:06,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:06,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:06,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:06,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:06,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:06,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:06,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:06,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:06,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:06,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:06,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 796 [2022-11-20 20:11:06,612 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:06,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 21 [2022-11-20 20:11:06,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 21 [2022-11-20 20:11:07,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 251 treesize of output 195 [2022-11-20 20:11:07,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 267 treesize of output 211 [2022-11-20 20:11:07,797 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:07,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 251 treesize of output 195 [2022-11-20 20:11:09,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:09,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:09,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:09,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:09,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:09,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:09,316 INFO L217 Elim1Store]: Index analysis took 130 ms [2022-11-20 20:11:09,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 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 2820 treesize of output 16398 [2022-11-20 20:11:09,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:09,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:09,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:09,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:09,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:09,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:09,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 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 2820 treesize of output 16582 [2022-11-20 20:11:11,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:11,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:11,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:11,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 7828 treesize of output 4720 [2022-11-20 20:11:11,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:11,152 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:11,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12396 treesize of output 5812 [2022-11-20 20:11:11,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:11,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:11,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:11,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:11,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 13712 treesize of output 4898 [2022-11-20 20:11:11,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:11,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:11,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:11,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:11,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 7828 treesize of output 4736 [2022-11-20 20:11:12,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:12,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:12,398 INFO L217 Elim1Store]: Index analysis took 202 ms [2022-11-20 20:11:12,507 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-11-20 20:11:12,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 13719 treesize of output 4903 [2022-11-20 20:11:12,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:12,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:12,853 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-20 20:11:12,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 7835 treesize of output 4741 [2022-11-20 20:11:13,361 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:13,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:13,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 383 treesize of output 466 [2022-11-20 20:11:13,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:13,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:13,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13714 treesize of output 4890 [2022-11-20 20:11:13,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:13,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:13,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:13,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 7830 treesize of output 4722 [2022-11-20 20:11:14,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:14,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:14,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12391 treesize of output 5809 [2022-11-20 20:11:14,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:14,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:14,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:14,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 7823 treesize of output 4717 [2022-11-20 20:11:14,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:14,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:14,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:14,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 7816 treesize of output 4712 [2022-11-20 20:11:14,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:14,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:14,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12384 treesize of output 5804 [2022-11-20 20:11:14,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:14,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:14,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:14,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 7823 treesize of output 4717 [2022-11-20 20:11:15,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:15,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:15,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13707 treesize of output 4885 [2022-11-20 20:11:15,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:15,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:15,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 376 treesize of output 461 [2022-11-20 20:11:15,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:15,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:15,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:15,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:15,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 376 treesize of output 571 [2022-11-20 20:11:15,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:15,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:15,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:15,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:15,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 7816 treesize of output 4728 [2022-11-20 20:11:15,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:15,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:15,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:15,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:15,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 13700 treesize of output 4890 [2022-11-20 20:11:16,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:16,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:16,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:16,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:16,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 7823 treesize of output 4733 [2022-11-20 20:11:16,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:16,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:16,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:16,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:16,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 13707 treesize of output 4895 [2022-11-20 20:11:16,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:16,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:16,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:16,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:16,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 376 treesize of output 571 [2022-11-20 20:11:17,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:17,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 239 treesize of output 434 [2022-11-20 20:11:17,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2022-11-20 20:11:18,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:18,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:18,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:18,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:18,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 379 treesize of output 572 [2022-11-20 20:11:18,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:18,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:18,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:18,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:18,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 133 [2022-11-20 20:11:19,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:19,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:19,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:19,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:19,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:19,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:19,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 712 treesize of output 613 [2022-11-20 20:11:19,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:19,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:19,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:19,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:19,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 123 [2022-11-20 20:11:20,077 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:20,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:20,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:20,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 537 treesize of output 571 [2022-11-20 20:11:20,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:20,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:21,051 INFO L321 Elim1Store]: treesize reduction 108, result has 32.1 percent of original size [2022-11-20 20:11:21,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1009 treesize of output 1058 [2022-11-20 20:11:21,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:21,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:21,407 INFO L321 Elim1Store]: treesize reduction 84, result has 37.8 percent of original size [2022-11-20 20:11:21,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 695 treesize of output 762 [2022-11-20 20:11:21,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:21,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:21,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 113 treesize of output 110 [2022-11-20 20:11:21,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:21,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:21,607 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 20:11:21,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 24 [2022-11-20 20:11:21,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:21,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:21,759 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-20 20:11:21,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 45 [2022-11-20 20:11:22,291 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:22,301 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:22,320 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:22,329 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:22,353 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:22,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:22,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:22,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:22,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:22,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 17 [2022-11-20 20:11:22,386 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:22,397 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:22,419 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:22,431 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:22,449 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:22,469 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:22,494 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:22,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:22,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:22,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:22,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:22,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2022-11-20 20:11:22,538 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:22,550 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:22,564 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:22,577 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 20:11:22,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-20 20:11:22,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-20 20:11:22,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-20 20:11:22,758 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:11:23,248 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '103#(and (= (select (select |#memory_int| |ULTIMATE.start_main_~#s1~0#1.base|) |ULTIMATE.start_main_~#s1~0#1.offset|) (select (select |#memory_int| |~#a~0.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 8) |~#a~0.offset|))) (= (ite (= |ULTIMATE.start_main_#t~mem12#1| 10) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#s1~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (= 30 (select (select |#memory_int| |~#a~0.base|) (+ |~#a~0.offset| 24))) (= (select |#valid| |ULTIMATE.start_main_~#s1~0#1.base|) 1) (= (select (select |#memory_int| |ULTIMATE.start_main_~#s1~0#1.base|) (+ |ULTIMATE.start_main_~#s1~0#1.offset| 4)) 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= 8 (select |#length| |ULTIMATE.start_main_~#s1~0#1.base|)) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#s1~0#1.base|) (= 3 |~#a~0.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#s1~0#1.base|) |ULTIMATE.start_main_~#s1~0#1.offset|) |ULTIMATE.start_main_#t~mem12#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |~#a~0.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#s1~0#1.base|) (+ |ULTIMATE.start_main_~#s1~0#1.offset| 4)) (select (select |#memory_int| |~#a~0.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 8) 4 |~#a~0.offset|))) (= 40 (select (select |#memory_int| |~#a~0.base|) (+ 28 |~#a~0.offset|))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:11:23,249 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:11:23,249 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:11:23,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-20 20:11:23,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618565673] [2022-11-20 20:11:23,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:11:23,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:11:23,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:11:23,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:11:23,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=73, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:11:23,253 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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) [2022-11-20 20:11:23,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:11:23,342 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2022-11-20 20:11:23,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:11:23,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 20:11:23,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:11:23,346 INFO L225 Difference]: With dead ends: 42 [2022-11-20 20:11:23,346 INFO L226 Difference]: Without dead ends: 35 [2022-11-20 20:11:23,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=73, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:11:23,349 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 42 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:11:23,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 24 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:11:23,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-20 20:11:23,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 13. [2022-11-20 20:11:23,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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) [2022-11-20 20:11:23,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-20 20:11:23,361 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2022-11-20 20:11:23,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:11:23,362 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-20 20:11:23,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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) [2022-11-20 20:11:23,362 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-11-20 20:11:23,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 20:11:23,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:11:23,363 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-20 20:11:23,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:11:23,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:11:23,571 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:11:23,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:11:23,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1945717328, now seen corresponding path program 2 times [2022-11-20 20:11:23,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:11:23,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215962997] [2022-11-20 20:11:23,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:11:23,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:11:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:11:23,949 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:23,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:11:23,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215962997] [2022-11-20 20:11:23,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215962997] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:11:23,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456313598] [2022-11-20 20:11:23,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:11:23,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:11:23,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:11:23,952 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:11:23,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:11:24,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 20:11:24,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:11:24,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 20:11:24,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:11:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:24,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:11:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:24,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456313598] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:11:24,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1351455461] [2022-11-20 20:11:24,205 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-20 20:11:24,206 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:11:24,206 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:11:24,206 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:11:24,207 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:11:24,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2022-11-20 20:11:24,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:24,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:24,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:24,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-20 20:11:24,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:24,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:24,328 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 20:11:24,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 41 [2022-11-20 20:11:24,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:24,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:24,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 81 [2022-11-20 20:11:24,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 64 [2022-11-20 20:11:24,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:24,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:24,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:24,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:24,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 198 [2022-11-20 20:11:24,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 132 treesize of output 119 [2022-11-20 20:11:24,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2022-11-20 20:11:24,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:24,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:24,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:24,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:24,530 INFO L350 Elim1Store]: Elim1 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 125 treesize of output 79 [2022-11-20 20:11:24,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-20 20:11:24,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 53 [2022-11-20 20:11:24,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-20 20:11:24,795 INFO L321 Elim1Store]: treesize reduction 42, result has 39.1 percent of original size [2022-11-20 20:11:24,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 132 [2022-11-20 20:11:24,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:24,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:24,904 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-20 20:11:24,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 49 [2022-11-20 20:11:25,133 INFO L321 Elim1Store]: treesize reduction 46, result has 35.2 percent of original size [2022-11-20 20:11:25,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 789 treesize of output 760 [2022-11-20 20:11:25,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 635 treesize of output 627 [2022-11-20 20:11:25,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:25,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:25,283 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 20:11:25,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 21 [2022-11-20 20:11:25,395 INFO L321 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-11-20 20:11:25,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 39 [2022-11-20 20:11:25,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:25,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2022-11-20 20:11:25,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 29 [2022-11-20 20:11:25,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:25,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:25,526 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-20 20:11:25,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 54 [2022-11-20 20:11:25,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2022-11-20 20:11:25,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:25,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:25,596 INFO L321 Elim1Store]: treesize reduction 70, result has 1.4 percent of original size [2022-11-20 20:11:25,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 46 [2022-11-20 20:11:25,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2022-11-20 20:11:25,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2022-11-20 20:11:25,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-20 20:11:25,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 53 [2022-11-20 20:11:25,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-20 20:11:25,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 20:11:25,956 INFO L321 Elim1Store]: treesize reduction 90, result has 28.6 percent of original size [2022-11-20 20:11:25,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 158 treesize of output 232 [2022-11-20 20:11:26,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 51 treesize of output 132 [2022-11-20 20:11:26,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:26,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:26,248 INFO L321 Elim1Store]: treesize reduction 94, result has 16.8 percent of original size [2022-11-20 20:11:26,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1079 treesize of output 1148 [2022-11-20 20:11:26,452 INFO L321 Elim1Store]: treesize reduction 121, result has 11.7 percent of original size [2022-11-20 20:11:26,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 610 treesize of output 567 [2022-11-20 20:11:26,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:26,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:26,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 82 treesize of output 72 [2022-11-20 20:11:26,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:26,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:26,603 INFO L321 Elim1Store]: treesize reduction 68, result has 25.3 percent of original size [2022-11-20 20:11:26,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 86 treesize of output 83 [2022-11-20 20:11:26,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:26,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:26,650 INFO L321 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-11-20 20:11:26,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 1 [2022-11-20 20:11:26,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 21 [2022-11-20 20:11:26,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:26,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:11:26,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 193 treesize of output 161 [2022-11-20 20:11:27,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:27,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:27,087 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-20 20:11:27,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 496 treesize of output 489 [2022-11-20 20:11:27,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:27,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:27,156 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-20 20:11:27,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 122 treesize of output 117 [2022-11-20 20:11:27,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:27,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:11:27,222 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-11-20 20:11:27,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 244 treesize of output 110 [2022-11-20 20:11:27,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:11:27,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:11:27,435 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no need to replace index at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructDerEnabler(DerPreprocessor.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:353) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) 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.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) 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) [2022-11-20 20:11:27,439 INFO L158 Benchmark]: Toolchain (without parser) took 41642.50ms. Allocated memory was 134.2MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 93.2MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 942.5MB. Max. memory is 16.1GB. [2022-11-20 20:11:27,440 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 107.0MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:11:27,440 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2852.20ms. Allocated memory was 134.2MB in the beginning and 486.5MB in the end (delta: 352.3MB). Free memory was 92.8MB in the beginning and 208.9MB in the end (delta: -116.2MB). Peak memory consumption was 275.3MB. Max. memory is 16.1GB. [2022-11-20 20:11:27,440 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.56ms. Allocated memory is still 486.5MB. Free memory was 208.9MB in the beginning and 207.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:11:27,440 INFO L158 Benchmark]: Boogie Preprocessor took 36.15ms. Allocated memory is still 486.5MB. Free memory was 207.9MB in the beginning and 205.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:11:27,441 INFO L158 Benchmark]: RCFGBuilder took 469.63ms. Allocated memory is still 486.5MB. Free memory was 205.8MB in the beginning and 190.1MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 20:11:27,441 INFO L158 Benchmark]: TraceAbstraction took 38239.15ms. Allocated memory was 486.5MB in the beginning and 1.5GB in the end (delta: 1.1GB). Free memory was 189.1MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 686.1MB. Max. memory is 16.1GB. [2022-11-20 20:11:27,442 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 107.0MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2852.20ms. Allocated memory was 134.2MB in the beginning and 486.5MB in the end (delta: 352.3MB). Free memory was 92.8MB in the beginning and 208.9MB in the end (delta: -116.2MB). Peak memory consumption was 275.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.56ms. Allocated memory is still 486.5MB. Free memory was 208.9MB in the beginning and 207.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.15ms. Allocated memory is still 486.5MB. Free memory was 207.9MB in the beginning and 205.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 469.63ms. Allocated memory is still 486.5MB. Free memory was 205.8MB in the beginning and 190.1MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 38239.15ms. Allocated memory was 486.5MB in the beginning and 1.5GB in the end (delta: 1.1GB). Free memory was 189.1MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 686.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no need to replace index de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no need to replace index: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-20 20:11:27,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9 --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 aa70df64230ecddb2965be82bddd3a5869e70ae49ad8ed2ef9f27fa2ce4c5f93 --- 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-6b4ec56 [2022-11-20 20:11:30,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:11:30,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:11:30,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:11:30,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:11:30,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:11:30,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:11:30,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:11:30,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:11:30,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:11:30,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:11:30,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:11:30,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:11:30,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:11:30,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:11:30,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:11:30,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:11:30,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:11:30,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:11:30,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:11:30,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:11:30,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:11:30,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:11:30,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:11:30,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:11:30,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:11:30,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:11:30,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:11:30,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:11:30,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:11:30,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:11:30,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:11:30,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:11:30,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:11:30,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:11:30,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:11:30,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:11:30,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:11:30,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:11:30,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:11:30,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:11:30,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-20 20:11:30,677 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:11:30,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:11:30,679 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:11:30,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:11:30,681 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:11:30,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:11:30,682 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:11:30,682 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:11:30,683 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:11:30,683 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:11:30,685 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:11:30,685 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:11:30,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:11:30,687 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:11:30,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:11:30,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:11:30,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:11:30,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:11:30,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:11:30,689 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 20:11:30,689 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 20:11:30,690 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 20:11:30,690 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:11:30,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:11:30,691 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:11:30,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:11:30,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:11:30,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 20:11:30,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:11:30,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:11:30,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:11:30,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:11:30,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:11:30,695 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 20:11:30,695 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 20:11:30,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:11:30,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:11:30,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 20:11:30,697 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_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa70df64230ecddb2965be82bddd3a5869e70ae49ad8ed2ef9f27fa2ce4c5f93 [2022-11-20 20:11:31,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:11:31,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:11:31,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:11:31,215 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:11:31,215 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:11:31,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i [2022-11-20 20:11:35,239 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:11:35,545 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:11:35,546 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i [2022-11-20 20:11:35,555 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/data/159f31e71/6e674c340f61487e95e32dcffd37386d/FLAG2054f94e8 [2022-11-20 20:11:35,582 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/data/159f31e71/6e674c340f61487e95e32dcffd37386d [2022-11-20 20:11:35,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:11:35,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:11:35,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:11:35,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:11:35,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:11:35,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:11:35" (1/1) ... [2022-11-20 20:11:35,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf6732e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:35, skipping insertion in model container [2022-11-20 20:11:35,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:11:35" (1/1) ... [2022-11-20 20:11:35,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:11:35,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:11:35,885 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i[865,878] [2022-11-20 20:11:35,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:11:38,590 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:11:38,612 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i[865,878] [2022-11-20 20:11:38,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:11:38,674 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:11:38,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:38 WrapperNode [2022-11-20 20:11:38,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:11:38,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:11:38,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:11:38,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:11:38,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:38" (1/1) ... [2022-11-20 20:11:38,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:38" (1/1) ... [2022-11-20 20:11:38,818 INFO L138 Inliner]: procedures = 19, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2022-11-20 20:11:38,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:11:38,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:11:38,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:11:38,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:11:38,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:38" (1/1) ... [2022-11-20 20:11:38,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:38" (1/1) ... [2022-11-20 20:11:38,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:38" (1/1) ... [2022-11-20 20:11:38,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:38" (1/1) ... [2022-11-20 20:11:38,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:38" (1/1) ... [2022-11-20 20:11:38,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:38" (1/1) ... [2022-11-20 20:11:38,852 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:38" (1/1) ... [2022-11-20 20:11:38,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:38" (1/1) ... [2022-11-20 20:11:38,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:11:38,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:11:38,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:11:38,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:11:38,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:38" (1/1) ... [2022-11-20 20:11:38,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:11:38,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:11:38,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:11:38,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:11:38,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:11:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 20:11:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 20:11:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:11:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 20:11:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:11:38,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:11:38,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:11:38,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 20:11:39,125 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:11:39,130 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:11:39,482 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:11:39,491 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:11:39,493 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 20:11:39,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:11:39 BoogieIcfgContainer [2022-11-20 20:11:39,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:11:39,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:11:39,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:11:39,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:11:39,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:11:35" (1/3) ... [2022-11-20 20:11:39,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b2f510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:11:39, skipping insertion in model container [2022-11-20 20:11:39,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:11:38" (2/3) ... [2022-11-20 20:11:39,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b2f510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:11:39, skipping insertion in model container [2022-11-20 20:11:39,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:11:39" (3/3) ... [2022-11-20 20:11:39,511 INFO L112 eAbstractionObserver]: Analyzing ICFG array_of_struct_single_elem_init.i [2022-11-20 20:11:39,535 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:11:39,535 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:11:39,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:11:39,600 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;@444822e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:11:39,600 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:11:39,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:11:39,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 20:11:39,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:11:39,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:11:39,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:11:39,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:11:39,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1140000322, now seen corresponding path program 1 times [2022-11-20 20:11:39,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:11:39,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374063767] [2022-11-20 20:11:39,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:11:39,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:11:39,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:11:39,651 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:11:39,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 20:11:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:11:39,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 20:11:39,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:11:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:39,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:11:39,796 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:11:39,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374063767] [2022-11-20 20:11:39,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374063767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:11:39,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:11:39,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:11:39,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958811155] [2022-11-20 20:11:39,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:11:39,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:11:39,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:11:39,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:11:39,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:11:39,844 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-20 20:11:39,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:11:39,862 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2022-11-20 20:11:39,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:11:39,865 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-20 20:11:39,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:11:39,874 INFO L225 Difference]: With dead ends: 32 [2022-11-20 20:11:39,874 INFO L226 Difference]: Without dead ends: 15 [2022-11-20 20:11:39,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:11:39,882 INFO L413 NwaCegarLoop]: 23 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, 23 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 [2022-11-20 20:11:39,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:11:39,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-20 20:11:39,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-20 20:11:39,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 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) [2022-11-20 20:11:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-11-20 20:11:39,923 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 9 [2022-11-20 20:11:39,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:11:39,924 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-11-20 20:11:39,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-20 20:11:39,925 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-11-20 20:11:39,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 20:11:39,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:11:39,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:11:39,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-20 20:11:40,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:11:40,150 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:11:40,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:11:40,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1807612939, now seen corresponding path program 1 times [2022-11-20 20:11:40,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:11:40,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791719976] [2022-11-20 20:11:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:11:40,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:11:40,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:11:40,161 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:11:40,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 20:11:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:11:40,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 20:11:40,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:11:40,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:40,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:11:40,322 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:11:40,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791719976] [2022-11-20 20:11:40,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791719976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:11:40,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:11:40,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:11:40,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057354681] [2022-11-20 20:11:40,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:11:40,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:11:40,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:11:40,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:11:40,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:11:40,340 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-20 20:11:40,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:11:40,421 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-11-20 20:11:40,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:11:40,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-11-20 20:11:40,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:11:40,426 INFO L225 Difference]: With dead ends: 36 [2022-11-20 20:11:40,427 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 20:11:40,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:11:40,433 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:11:40,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 25 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:11:40,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 20:11:40,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2022-11-20 20:11:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 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) [2022-11-20 20:11:40,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-11-20 20:11:40,445 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2022-11-20 20:11:40,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:11:40,446 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-11-20 20:11:40,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-20 20:11:40,447 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-11-20 20:11:40,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 20:11:40,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:11:40,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:11:40,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:11:40,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:11:40,663 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:11:40,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:11:40,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2006795472, now seen corresponding path program 1 times [2022-11-20 20:11:40,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:11:40,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63939568] [2022-11-20 20:11:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:11:40,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:11:40,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:11:40,667 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:11:40,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 20:11:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:11:40,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:11:40,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:11:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:40,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:11:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:40,894 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:11:40,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63939568] [2022-11-20 20:11:40,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63939568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:11:40,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1064636949] [2022-11-20 20:11:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:11:40,896 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:11:40,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:11:40,931 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:11:40,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-11-20 20:11:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:11:41,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:11:41,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:11:41,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:41,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:11:41,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:41,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1064636949] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:11:41,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631183660] [2022-11-20 20:11:41,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:11:41,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:11:41,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:11:41,206 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:11:41,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 20:11:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:11:41,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:11:41,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:11:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:41,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:11:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:41,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631183660] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:11:41,395 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 20:11:41,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2022-11-20 20:11:41,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007378395] [2022-11-20 20:11:41,396 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 20:11:41,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:11:41,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:11:41,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:11:41,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:11:41,398 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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) [2022-11-20 20:11:41,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:11:41,616 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2022-11-20 20:11:41,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:11:41,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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) Word has length 13 [2022-11-20 20:11:41,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:11:41,618 INFO L225 Difference]: With dead ends: 62 [2022-11-20 20:11:41,618 INFO L226 Difference]: Without dead ends: 53 [2022-11-20 20:11:41,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:11:41,620 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 95 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:11:41,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 56 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:11:41,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-20 20:11:41,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 28. [2022-11-20 20:11:41,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 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) [2022-11-20 20:11:41,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2022-11-20 20:11:41,629 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 13 [2022-11-20 20:11:41,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:11:41,630 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2022-11-20 20:11:41,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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) [2022-11-20 20:11:41,631 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2022-11-20 20:11:41,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 20:11:41,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:11:41,632 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:11:41,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:11:41,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2022-11-20 20:11:42,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 20:11:42,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:11:42,254 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:11:42,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:11:42,255 INFO L85 PathProgramCache]: Analyzing trace with hash -741908511, now seen corresponding path program 2 times [2022-11-20 20:11:42,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:11:42,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202351213] [2022-11-20 20:11:42,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 20:11:42,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:11:42,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:11:42,258 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:11:42,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 20:11:42,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 20:11:42,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:11:42,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 20:11:42,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:11:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:42,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:11:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:42,858 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:11:42,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202351213] [2022-11-20 20:11:42,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202351213] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:11:42,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1531190119] [2022-11-20 20:11:42,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 20:11:42,859 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:11:42,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:11:42,861 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:11:42,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-20 20:11:43,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 20:11:43,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:11:43,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 20:11:43,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:11:43,244 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:43,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:11:43,342 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:43,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1531190119] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:11:43,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099506235] [2022-11-20 20:11:43,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 20:11:43,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:11:43,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:11:43,345 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:11:43,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 20:11:43,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 20:11:43,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:11:43,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 20:11:43,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:11:43,595 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:43,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:11:43,681 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:43,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099506235] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:11:43,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 20:11:43,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 12 [2022-11-20 20:11:43,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480660491] [2022-11-20 20:11:43,683 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 20:11:43,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 20:11:43,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:11:43,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 20:11:43,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:11:43,689 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 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) [2022-11-20 20:11:44,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:11:44,511 INFO L93 Difference]: Finished difference Result 134 states and 173 transitions. [2022-11-20 20:11:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 20:11:44,513 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 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) Word has length 25 [2022-11-20 20:11:44,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:11:44,514 INFO L225 Difference]: With dead ends: 134 [2022-11-20 20:11:44,515 INFO L226 Difference]: Without dead ends: 125 [2022-11-20 20:11:44,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-20 20:11:44,516 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 403 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:11:44,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 299 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:11:44,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-20 20:11:44,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 52. [2022-11-20 20:11:44,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 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) [2022-11-20 20:11:44,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2022-11-20 20:11:44,543 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 25 [2022-11-20 20:11:44,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:11:44,544 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2022-11-20 20:11:44,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 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) [2022-11-20 20:11:44,544 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2022-11-20 20:11:44,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 20:11:44,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:11:44,547 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:11:44,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2022-11-20 20:11:44,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 20:11:44,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 20:11:45,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:11:45,152 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:11:45,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:11:45,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1207212861, now seen corresponding path program 3 times [2022-11-20 20:11:45,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:11:45,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27619958] [2022-11-20 20:11:45,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:11:45,154 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:11:45,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:11:45,156 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:11:45,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 20:11:46,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-20 20:11:46,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:11:46,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 20:11:46,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:11:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:46,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:11:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:47,709 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:11:47,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27619958] [2022-11-20 20:11:47,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27619958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:11:47,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1931223979] [2022-11-20 20:11:47,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:11:47,710 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:11:47,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:11:47,711 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:11:47,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-20 20:11:57,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-20 20:11:57,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:11:57,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 20:11:57,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:11:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:57,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:11:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:11:58,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1931223979] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:11:58,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464136785] [2022-11-20 20:11:58,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:11:58,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:11:58,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:11:58,052 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:11:58,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 20:15:25,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-20 20:15:25,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:15:26,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 20:15:26,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:15:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:15:26,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:15:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:15:26,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464136785] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:15:26,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 20:15:26,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13, 14, 13, 14] total 25 [2022-11-20 20:15:26,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061555412] [2022-11-20 20:15:26,570 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 20:15:26,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 20:15:26,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:15:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 20:15:26,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2022-11-20 20:15:26,572 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 25 states, 25 states have (on average 3.64) internal successors, (91), 25 states have internal predecessors, (91), 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) [2022-11-20 20:15:30,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:15:30,427 INFO L93 Difference]: Finished difference Result 278 states and 359 transitions. [2022-11-20 20:15:30,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 20:15:30,432 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.64) internal successors, (91), 25 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-11-20 20:15:30,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:15:30,441 INFO L225 Difference]: With dead ends: 278 [2022-11-20 20:15:30,442 INFO L226 Difference]: Without dead ends: 269 [2022-11-20 20:15:30,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=454, Invalid=806, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 20:15:30,444 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 1306 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:15:30,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1306 Valid, 1336 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 20:15:30,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-20 20:15:30,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 100. [2022-11-20 20:15:30,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2626262626262625) internal successors, (125), 99 states have internal predecessors, (125), 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) [2022-11-20 20:15:30,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 125 transitions. [2022-11-20 20:15:30,480 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 125 transitions. Word has length 49 [2022-11-20 20:15:30,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:15:30,481 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 125 transitions. [2022-11-20 20:15:30,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.64) internal successors, (91), 25 states have internal predecessors, (91), 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) [2022-11-20 20:15:30,482 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2022-11-20 20:15:30,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 20:15:30,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:15:30,491 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:15:30,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 20:15:30,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 20:15:30,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-20 20:15:31,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 20:15:31,120 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:15:31,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:15:31,121 INFO L85 PathProgramCache]: Analyzing trace with hash 239950983, now seen corresponding path program 4 times [2022-11-20 20:15:31,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:15:31,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361950509] [2022-11-20 20:15:31,122 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 20:15:31,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:15:31,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:15:31,123 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:15:31,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 20:15:31,850 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 20:15:31,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:15:31,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 20:15:31,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:15:32,557 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:15:32,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:15:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:15:35,219 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:15:35,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361950509] [2022-11-20 20:15:35,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361950509] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:15:35,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2046203710] [2022-11-20 20:15:35,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 20:15:35,220 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:15:35,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:15:35,222 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:15:35,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-20 20:15:35,981 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 20:15:35,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:15:36,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 20:15:36,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:15:36,228 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:15:36,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:15:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:15:36,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2046203710] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:15:36,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447796577] [2022-11-20 20:15:36,544 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 20:15:36,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:15:36,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:15:36,545 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:15:36,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 20:15:36,967 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 20:15:36,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:15:36,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 20:15:36,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:15:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:15:37,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:15:37,547 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:15:37,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447796577] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:15:37,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 20:15:37,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 25, 25, 25] total 48 [2022-11-20 20:15:37,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772935061] [2022-11-20 20:15:37,548 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 20:15:37,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-20 20:15:37,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:15:37,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-20 20:15:37,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 20:15:37,551 INFO L87 Difference]: Start difference. First operand 100 states and 125 transitions. Second operand has 48 states, 48 states have (on average 3.8958333333333335) internal successors, (187), 48 states have internal predecessors, (187), 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) [2022-11-20 20:15:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:15:52,975 INFO L93 Difference]: Finished difference Result 566 states and 731 transitions. [2022-11-20 20:15:52,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-20 20:15:52,976 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.8958333333333335) internal successors, (187), 48 states have internal predecessors, (187), 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 97 [2022-11-20 20:15:52,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:15:52,980 INFO L225 Difference]: With dead ends: 566 [2022-11-20 20:15:52,980 INFO L226 Difference]: Without dead ends: 557 [2022-11-20 20:15:52,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2022-11-20 20:15:52,984 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 6131 mSDsluCounter, 5303 mSDsCounter, 0 mSdLazyCounter, 2826 mSolverCounterSat, 646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6131 SdHoareTripleChecker+Valid, 5537 SdHoareTripleChecker+Invalid, 3472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 2826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:15:52,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6131 Valid, 5537 Invalid, 3472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 2826 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-20 20:15:52,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-11-20 20:15:53,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 196. [2022-11-20 20:15:53,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.2564102564102564) internal successors, (245), 195 states have internal predecessors, (245), 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) [2022-11-20 20:15:53,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 245 transitions. [2022-11-20 20:15:53,013 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 245 transitions. Word has length 97 [2022-11-20 20:15:53,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:15:53,013 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 245 transitions. [2022-11-20 20:15:53,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.8958333333333335) internal successors, (187), 48 states have internal predecessors, (187), 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) [2022-11-20 20:15:53,014 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 245 transitions. [2022-11-20 20:15:53,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-20 20:15:53,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:15:53,019 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:15:53,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-20 20:15:53,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 20:15:53,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-20 20:15:53,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:15:53,629 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:15:53,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:15:53,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1120861169, now seen corresponding path program 5 times [2022-11-20 20:15:53,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:15:53,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097411784] [2022-11-20 20:15:53,633 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 20:15:53,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:15:53,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:15:53,635 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:15:53,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-20 20:16:10,601 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-11-20 20:16:10,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:16:10,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-20 20:16:10,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:16:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:16:12,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:16:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:16:26,240 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:16:26,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097411784] [2022-11-20 20:16:26,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097411784] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:16:26,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1503928176] [2022-11-20 20:16:26,241 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 20:16:26,241 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:16:26,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:16:26,242 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:16:26,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ec9fb67-09f6-4655-b3c4-8df8b844298f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process