./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW --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 de5a591efb40e891e226106d8590a7409596f3a27aca8b697af826abd4fe5201 --- 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-4e7fbc6 [2022-11-23 16:12:25,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:12:25,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:12:25,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:12:25,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:12:25,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:12:25,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:12:25,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:12:25,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:12:25,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:12:25,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:12:25,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:12:25,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:12:25,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:12:25,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:12:25,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:12:25,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:12:25,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:12:25,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:12:25,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:12:25,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:12:25,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:12:25,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:12:25,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:12:26,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:12:26,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:12:26,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:12:26,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:12:26,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:12:26,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:12:26,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:12:26,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:12:26,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:12:26,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:12:26,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:12:26,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:12:26,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:12:26,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:12:26,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:12:26,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:12:26,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:12:26,020 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 16:12:26,057 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:12:26,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:12:26,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:12:26,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:12:26,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:12:26,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:12:26,060 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:12:26,061 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:12:26,061 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:12:26,061 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:12:26,062 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:12:26,063 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:12:26,063 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:12:26,063 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:12:26,063 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:12:26,064 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:12:26,064 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:12:26,064 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:12:26,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:12:26,065 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 16:12:26,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:12:26,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 16:12:26,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:12:26,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:12:26,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:12:26,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:12:26,067 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 16:12:26,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:12:26,068 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:12:26,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:12:26,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:12:26,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:12:26,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:12:26,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:12:26,070 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:12:26,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:12:26,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:12:26,071 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:12:26,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:12:26,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:12:26,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:12:26,072 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_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de5a591efb40e891e226106d8590a7409596f3a27aca8b697af826abd4fe5201 [2022-11-23 16:12:26,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:12:26,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:12:26,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:12:26,403 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:12:26,404 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:12:26,405 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2022-11-23 16:12:29,407 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:12:29,635 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:12:29,636 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2022-11-23 16:12:29,644 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/data/afda24628/acbb9db949d94987b55fc18d4427f522/FLAG7b26d480e [2022-11-23 16:12:29,658 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/data/afda24628/acbb9db949d94987b55fc18d4427f522 [2022-11-23 16:12:29,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:12:29,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:12:29,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:12:29,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:12:29,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:12:29,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:12:29" (1/1) ... [2022-11-23 16:12:29,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d43d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:29, skipping insertion in model container [2022-11-23 16:12:29,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:12:29" (1/1) ... [2022-11-23 16:12:29,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:12:29,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:12:29,992 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_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2022-11-23 16:12:30,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:12:30,015 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:12:30,114 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_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2022-11-23 16:12:30,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:12:30,136 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:12:30,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:30 WrapperNode [2022-11-23 16:12:30,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:12:30,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:12:30,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:12:30,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:12:30,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:30" (1/1) ... [2022-11-23 16:12:30,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:30" (1/1) ... [2022-11-23 16:12:30,234 INFO L138 Inliner]: procedures = 17, calls = 293, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 772 [2022-11-23 16:12:30,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:12:30,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:12:30,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:12:30,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:12:30,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:30" (1/1) ... [2022-11-23 16:12:30,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:30" (1/1) ... [2022-11-23 16:12:30,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:30" (1/1) ... [2022-11-23 16:12:30,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:30" (1/1) ... [2022-11-23 16:12:30,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:30" (1/1) ... [2022-11-23 16:12:30,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:30" (1/1) ... [2022-11-23 16:12:30,283 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:30" (1/1) ... [2022-11-23 16:12:30,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:30" (1/1) ... [2022-11-23 16:12:30,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:12:30,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:12:30,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:12:30,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:12:30,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:30" (1/1) ... [2022-11-23 16:12:30,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:12:30,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:12:30,325 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:12:30,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:12:30,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 16:12:30,438 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2022-11-23 16:12:30,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 16:12:30,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 16:12:30,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 16:12:30,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:12:30,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:12:30,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 16:12:30,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 16:12:30,605 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:12:30,607 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:12:31,547 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:12:31,562 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:12:31,562 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 16:12:31,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:12:31 BoogieIcfgContainer [2022-11-23 16:12:31,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:12:31,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:12:31,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:12:31,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:12:31,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:12:29" (1/3) ... [2022-11-23 16:12:31,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29394849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:12:31, skipping insertion in model container [2022-11-23 16:12:31,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:30" (2/3) ... [2022-11-23 16:12:31,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29394849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:12:31, skipping insertion in model container [2022-11-23 16:12:31,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:12:31" (3/3) ... [2022-11-23 16:12:31,574 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2022-11-23 16:12:31,593 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:12:31,594 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 16:12:31,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:12:31,668 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;@6bc35e17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:12:31,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 16:12:31,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 46 states have (on average 1.934782608695652) internal successors, (89), 47 states have internal predecessors, (89), 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) [2022-11-23 16:12:31,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-23 16:12:31,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:12:31,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:12:31,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:12:31,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:12:31,685 INFO L85 PathProgramCache]: Analyzing trace with hash -352673803, now seen corresponding path program 1 times [2022-11-23 16:12:31,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:12:31,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108339460] [2022-11-23 16:12:31,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:12:31,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:12:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:12:33,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:33,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:12:33,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108339460] [2022-11-23 16:12:33,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108339460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:12:33,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:12:33,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-23 16:12:33,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000305597] [2022-11-23 16:12:33,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:12:33,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 16:12:33,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:12:33,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 16:12:33,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-23 16:12:33,336 INFO L87 Difference]: Start difference. First operand has 48 states, 46 states have (on average 1.934782608695652) internal successors, (89), 47 states have internal predecessors, (89), 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 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 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) [2022-11-23 16:12:34,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:12:34,134 INFO L93 Difference]: Finished difference Result 81 states and 115 transitions. [2022-11-23 16:12:34,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 16:12:34,137 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 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 43 [2022-11-23 16:12:34,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:12:34,145 INFO L225 Difference]: With dead ends: 81 [2022-11-23 16:12:34,145 INFO L226 Difference]: Without dead ends: 52 [2022-11-23 16:12:34,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-11-23 16:12:34,152 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 96 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 16:12:34,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 399 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 16:12:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-23 16:12:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2022-11-23 16:12:34,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 48 states have internal predecessors, (49), 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) [2022-11-23 16:12:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2022-11-23 16:12:34,186 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 43 [2022-11-23 16:12:34,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:12:34,186 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2022-11-23 16:12:34,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 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) [2022-11-23 16:12:34,187 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2022-11-23 16:12:34,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-23 16:12:34,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:12:34,188 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:12:34,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:12:34,189 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:12:34,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:12:34,190 INFO L85 PathProgramCache]: Analyzing trace with hash -530558132, now seen corresponding path program 1 times [2022-11-23 16:12:34,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:12:34,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667715473] [2022-11-23 16:12:34,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:12:34,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:12:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:12:35,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:35,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:12:35,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667715473] [2022-11-23 16:12:35,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667715473] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:12:35,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699253132] [2022-11-23 16:12:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:12:35,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:12:35,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:12:35,295 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:12:35,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 16:12:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:12:35,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-23 16:12:35,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:12:35,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:35,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:12:36,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:36,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699253132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:12:36,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [370652731] [2022-11-23 16:12:36,437 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-11-23 16:12:36,437 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:12:36,442 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:12:36,450 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:12:36,454 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:12:36,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:36,959 INFO L321 Elim1Store]: treesize reduction 252, result has 33.5 percent of original size [2022-11-23 16:12:36,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 122 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 193 [2022-11-23 16:12:37,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:37,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 15 select indices, 15 select index equivalence classes, 121 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 126 [2022-11-23 16:12:37,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 820 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 370 treesize of output 450 [2022-11-23 16:12:37,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:37,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:37,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:37,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:38,217 INFO L321 Elim1Store]: treesize reduction 234, result has 33.5 percent of original size [2022-11-23 16:12:38,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 140 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 26 case distinctions, treesize of input 97 treesize of output 197 [2022-11-23 16:12:38,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:38,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:38,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:38,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:12:38,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 16 select indices, 16 select index equivalence classes, 138 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 134 [2022-11-23 16:12:38,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 820 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 370 treesize of output 450 [2022-11-23 16:12:59,670 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:13:12,351 WARN L233 SmtUtils]: Spent 10.32s on a formula simplification. DAG size of input: 1061 DAG size of output: 1003 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:13:23,382 WARN L233 SmtUtils]: Spent 10.55s on a formula simplification. DAG size of input: 1071 DAG size of output: 1009 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:13:34,944 WARN L233 SmtUtils]: Spent 11.03s on a formula simplification. DAG size of input: 1088 DAG size of output: 1026 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:13:46,165 WARN L233 SmtUtils]: Spent 10.73s on a formula simplification. DAG size of input: 1081 DAG size of output: 1015 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:13:57,640 WARN L233 SmtUtils]: Spent 10.95s on a formula simplification. DAG size of input: 1090 DAG size of output: 1021 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:14:09,636 WARN L233 SmtUtils]: Spent 11.42s on a formula simplification. DAG size of input: 1107 DAG size of output: 1038 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:14:21,445 WARN L233 SmtUtils]: Spent 11.30s on a formula simplification. DAG size of input: 1113 DAG size of output: 1039 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:14:33,540 WARN L233 SmtUtils]: Spent 11.53s on a formula simplification. DAG size of input: 1121 DAG size of output: 1045 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:14:46,016 WARN L233 SmtUtils]: Spent 11.81s on a formula simplification. DAG size of input: 1136 DAG size of output: 1059 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:14:58,640 WARN L233 SmtUtils]: Spent 11.97s on a formula simplification. DAG size of input: 1142 DAG size of output: 1060 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:11,749 WARN L233 SmtUtils]: Spent 12.39s on a formula simplification. DAG size of input: 1150 DAG size of output: 1066 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:25,302 WARN L233 SmtUtils]: Spent 12.77s on a formula simplification. DAG size of input: 1165 DAG size of output: 1080 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:38,941 WARN L233 SmtUtils]: Spent 12.89s on a formula simplification. DAG size of input: 1165 DAG size of output: 1075 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:52,941 WARN L233 SmtUtils]: Spent 13.21s on a formula simplification. DAG size of input: 1173 DAG size of output: 1081 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:16:07,505 WARN L233 SmtUtils]: Spent 13.69s on a formula simplification. DAG size of input: 1188 DAG size of output: 1095 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:16:21,690 WARN L233 SmtUtils]: Spent 13.40s on a formula simplification. DAG size of input: 1192 DAG size of output: 1094 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:16:36,342 WARN L233 SmtUtils]: Spent 13.80s on a formula simplification. DAG size of input: 1200 DAG size of output: 1100 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:16:51,593 WARN L233 SmtUtils]: Spent 14.35s on a formula simplification. DAG size of input: 1215 DAG size of output: 1114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:17:06,710 WARN L233 SmtUtils]: Spent 14.17s on a formula simplification. DAG size of input: 1219 DAG size of output: 1113 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:17:22,085 WARN L233 SmtUtils]: Spent 14.36s on a formula simplification. DAG size of input: 1227 DAG size of output: 1119 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:17:39,057 WARN L233 SmtUtils]: Spent 15.93s on a formula simplification. DAG size of input: 1242 DAG size of output: 1133 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:17:55,130 WARN L233 SmtUtils]: Spent 15.04s on a formula simplification. DAG size of input: 1246 DAG size of output: 1132 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:18:11,056 WARN L233 SmtUtils]: Spent 14.89s on a formula simplification. DAG size of input: 1254 DAG size of output: 1138 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:18:27,722 WARN L233 SmtUtils]: Spent 15.56s on a formula simplification. DAG size of input: 1269 DAG size of output: 1152 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:18:44,827 WARN L233 SmtUtils]: Spent 16.04s on a formula simplification. DAG size of input: 1273 DAG size of output: 1151 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:19:01,829 WARN L233 SmtUtils]: Spent 15.90s on a formula simplification. DAG size of input: 1281 DAG size of output: 1157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:19:19,376 WARN L233 SmtUtils]: Spent 16.39s on a formula simplification. DAG size of input: 1296 DAG size of output: 1171 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:19:23,824 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '541#(and (<= |ULTIMATE.start_main_~__tmp_9~0#1| 1) (<= |ULTIMATE.start_main_~__tmp_6~0#1| 1) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~5#1| 1) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~4#1|) (<= 0 ~__tmp_1075_2~0.base) (<= 1 ~__tmp_1075_1~0) (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1.offset|) (<= 4 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~4#1|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~4#1| 1) (<= |ULTIMATE.start_main_~__tmp_3~0#1| 1) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~4#1.base|) (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1.base|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~1#1| 1) (<= 0 |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.base|) (<= ~__tmp_1075_1~0 1) (<= |ULTIMATE.start_main_~__tmp_8~0#1| 1) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~8#1| 1) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~0#1.offset|) (<= |ULTIMATE.start_main_~__tmp_7~0#1| 1) (<= 1 |ULTIMATE.start_main_~__tmp_9~0#1|) (<= |ULTIMATE.start_main_~__tmp_1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~1#1.base|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~1#1| 1) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~5#1|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~3#1| 1) (<= |ULTIMATE.start_main_~__tmp_10~0#1| 1) (<= |ULTIMATE.start_main_~__tmp_5~0#1| 1) (not (< (mod ~Id_MCDC_93~0 4294967296) 42)) (<= 2 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~2#1|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~6#1.base|) (<= 1 |ULTIMATE.start_main_~__tmp_10~0#1|) (= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~10#1| 0) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~7#1|) (<= 1 |ULTIMATE.start_main_~__tmp_6~0#1|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~6#1| 1) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~5#1| 1) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~4#1| 1) (<= 8 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~8#1|) (<= 1 |ULTIMATE.start_main_~__tmp_7~0#1|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~3#1| 1) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~8#1.base|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~0#1.base|) (<= 5 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~5#1|) (<= 3 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~3#1|) (<= 1 |ULTIMATE.start_main_~__tmp_3~0#1|) (<= 1 |ULTIMATE.start_main_~__tmp_5~0#1|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~0#1| 0) (<= 0 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.base|) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~3#1|) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~2#1|) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~6#1| 6) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.base|) (= |ULTIMATE.start_main_~main__Id_MCDC_116~0#1| 0) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~5#1| 5) (<= 1 |ULTIMATE.start_main_~__tmp_8~0#1|) (<= 1 |ULTIMATE.start_main_~__tmp_4~0#1|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~7#1| 1) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~3#1.base|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~2#1.base|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~2#1| 1) (<= |ULTIMATE.start_main_~__tmp_4~0#1| 1) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~0#1|) (<= 1 |ULTIMATE.start_main_~__tmp_2~0#1|) (<= 0 |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.offset|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.offset|) (= |ULTIMATE.start_main_~__tmp_12~0#1| |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~10#1|) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~4#1| 4) (= |ULTIMATE.start_main_~main__Id_MCDC_115~0#1| 0) (<= |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.offset| 0) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~7#1| 1) (<= 6 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~6#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~5#1.base|) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~0#1| 1) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~1#1|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~8#1| 1) (<= 7 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~7#1|) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~2#1| 2) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~6#1|) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= 9 ~Id_MCDC_93~0) (<= 8 ~__tmp_1075_0~0) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~0#1| 1) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~2#1| 1) (<= 9 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1|) (<= |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.offset| 0) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~1#1| 1) (<= 1 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~1#1|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~9#1| 0) (= ~__return_main~0 0) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~7#1| 7) (<= 1 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~8#1|) (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.offset| 0) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~3#1| 3) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~7#1.base|) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~0#1|) (= |#NULL.base| 0) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~6#1| 1) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~8#1|))' at error location [2022-11-23 16:19:23,825 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:19:23,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:19:23,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 14] total 30 [2022-11-23 16:19:23,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797706484] [2022-11-23 16:19:23,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:19:23,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-23 16:19:23,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:19:23,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-23 16:19:23,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=715, Invalid=3191, Unknown=0, NotChecked=0, Total=3906 [2022-11-23 16:19:23,829 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 30 states, 30 states have (on average 3.6) internal successors, (108), 30 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:19:31,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:19:31,282 INFO L93 Difference]: Finished difference Result 114 states and 125 transitions. [2022-11-23 16:19:31,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-23 16:19:31,283 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.6) internal successors, (108), 30 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-23 16:19:31,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:19:31,284 INFO L225 Difference]: With dead ends: 114 [2022-11-23 16:19:31,284 INFO L226 Difference]: Without dead ends: 111 [2022-11-23 16:19:31,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 96 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2519 ImplicationChecksByTransitivity, 391.3s TimeCoverageRelationStatistics Valid=1491, Invalid=5481, Unknown=0, NotChecked=0, Total=6972 [2022-11-23 16:19:31,288 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 637 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 16:19:31,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 204 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 16:19:31,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-23 16:19:31,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2022-11-23 16:19:31,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.0092592592592593) internal successors, (109), 108 states have internal predecessors, (109), 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) [2022-11-23 16:19:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2022-11-23 16:19:31,312 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 48 [2022-11-23 16:19:31,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:19:31,314 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2022-11-23 16:19:31,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.6) internal successors, (108), 30 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:19:31,316 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2022-11-23 16:19:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-23 16:19:31,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:19:31,319 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:19:31,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 16:19:31,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-23 16:19:31,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:19:31,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:19:31,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1651985676, now seen corresponding path program 2 times [2022-11-23 16:19:31,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:19:31,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024029952] [2022-11-23 16:19:31,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:19:31,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:19:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:19:33,519 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:19:33,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:19:33,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024029952] [2022-11-23 16:19:33,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024029952] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:19:33,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629006513] [2022-11-23 16:19:33,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:19:33,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:19:33,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:19:33,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:19:33,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec45ee4-964b-404c-8fc6-6b0cfc0a61d9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 16:19:34,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 16:19:34,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:19:34,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-23 16:19:34,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:19:35,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:35,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:35,150 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 16:19:35,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 22 [2022-11-23 16:19:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-23 16:19:35,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:19:38,584 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-23 16:19:38,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629006513] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:19:38,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [629681066] [2022-11-23 16:19:38,589 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-11-23 16:19:38,589 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:19:38,590 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:19:38,590 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:19:38,590 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:19:38,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:38,944 INFO L321 Elim1Store]: treesize reduction 252, result has 33.5 percent of original size [2022-11-23 16:19:38,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 122 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 193 [2022-11-23 16:19:38,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:38,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 15 select indices, 15 select index equivalence classes, 121 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 126 [2022-11-23 16:19:39,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 820 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 370 treesize of output 450 [2022-11-23 16:19:39,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:39,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:39,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:39,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:39,747 INFO L321 Elim1Store]: treesize reduction 130, result has 47.6 percent of original size [2022-11-23 16:19:39,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 16 select indices, 16 select index equivalence classes, 125 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 13 case distinctions, treesize of input 87 treesize of output 186 [2022-11-23 16:19:39,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 820 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 370 treesize of output 450 [2022-11-23 16:19:40,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:40,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:40,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:40,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 16:19:40,429 INFO L321 Elim1Store]: treesize reduction 234, result has 33.5 percent of original size [2022-11-23 16:19:40,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 140 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 26 case distinctions, treesize of input 97 treesize of output 197 [2022-11-23 16:19:59,202 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:20:12,458 WARN L233 SmtUtils]: Spent 10.34s on a formula simplification. DAG size of input: 1061 DAG size of output: 1003 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:20:23,951 WARN L233 SmtUtils]: Spent 10.61s on a formula simplification. DAG size of input: 1071 DAG size of output: 1009 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:20:35,898 WARN L233 SmtUtils]: Spent 11.03s on a formula simplification. DAG size of input: 1088 DAG size of output: 1026 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:20:47,589 WARN L233 SmtUtils]: Spent 10.78s on a formula simplification. DAG size of input: 1081 DAG size of output: 1015 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:20:59,488 WARN L233 SmtUtils]: Spent 10.95s on a formula simplification. DAG size of input: 1090 DAG size of output: 1021 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:21:11,970 WARN L233 SmtUtils]: Spent 11.47s on a formula simplification. DAG size of input: 1107 DAG size of output: 1038 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:21:24,122 WARN L233 SmtUtils]: Spent 11.20s on a formula simplification. DAG size of input: 1100 DAG size of output: 1027 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:21:36,544 WARN L233 SmtUtils]: Spent 11.44s on a formula simplification. DAG size of input: 1109 DAG size of output: 1033 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:21:49,315 WARN L233 SmtUtils]: Spent 11.73s on a formula simplification. DAG size of input: 1126 DAG size of output: 1050 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:22:02,159 WARN L233 SmtUtils]: Spent 11.75s on a formula simplification. DAG size of input: 1132 DAG size of output: 1051 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:22:15,250 WARN L233 SmtUtils]: Spent 11.96s on a formula simplification. DAG size of input: 1140 DAG size of output: 1057 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:22:28,695 WARN L233 SmtUtils]: Spent 12.29s on a formula simplification. DAG size of input: 1155 DAG size of output: 1071 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:22:42,407 WARN L233 SmtUtils]: Spent 12.49s on a formula simplification. DAG size of input: 1161 DAG size of output: 1072 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:22:56,485 WARN L233 SmtUtils]: Spent 12.83s on a formula simplification. DAG size of input: 1169 DAG size of output: 1078 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:23:10,902 WARN L233 SmtUtils]: Spent 13.11s on a formula simplification. DAG size of input: 1184 DAG size of output: 1092 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:23:25,346 WARN L233 SmtUtils]: Spent 13.13s on a formula simplification. DAG size of input: 1184 DAG size of output: 1087 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:23:40,079 WARN L233 SmtUtils]: Spent 13.38s on a formula simplification. DAG size of input: 1192 DAG size of output: 1093 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:23:55,344 WARN L233 SmtUtils]: Spent 13.84s on a formula simplification. DAG size of input: 1207 DAG size of output: 1107 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:24:11,983 WARN L233 SmtUtils]: Spent 15.15s on a formula simplification. DAG size of input: 1213 DAG size of output: 1108 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:24:27,763 WARN L233 SmtUtils]: Spent 14.22s on a formula simplification. DAG size of input: 1221 DAG size of output: 1114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:24:44,440 WARN L233 SmtUtils]: Spent 15.04s on a formula simplification. DAG size of input: 1236 DAG size of output: 1128 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:25:01,693 WARN L233 SmtUtils]: Spent 15.65s on a formula simplification. DAG size of input: 1242 DAG size of output: 1129 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:25:19,168 WARN L233 SmtUtils]: Spent 15.78s on a formula simplification. DAG size of input: 1250 DAG size of output: 1135 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:25:37,394 WARN L233 SmtUtils]: Spent 16.47s on a formula simplification. DAG size of input: 1265 DAG size of output: 1149 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:25:54,405 WARN L233 SmtUtils]: Spent 15.35s on a formula simplification. DAG size of input: 1271 DAG size of output: 1150 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:26:11,749 WARN L233 SmtUtils]: Spent 15.60s on a formula simplification. DAG size of input: 1279 DAG size of output: 1156 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:26:29,751 WARN L233 SmtUtils]: Spent 16.17s on a formula simplification. DAG size of input: 1294 DAG size of output: 1170 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)