./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur --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 9e5c7c8f34d0399e1ec13072e237ea7df9536407415bc8e3ff2e61c34b30de96 --- 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-38b53e6 [2022-11-26 00:41:55,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:41:55,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:41:55,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:41:55,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:41:55,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:41:55,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:41:56,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:41:56,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:41:56,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:41:56,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:41:56,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:41:56,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:41:56,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:41:56,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:41:56,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:41:56,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:41:56,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:41:56,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:41:56,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:41:56,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:41:56,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:41:56,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:41:56,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:41:56,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:41:56,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:41:56,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:41:56,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:41:56,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:41:56,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:41:56,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:41:56,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:41:56,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:41:56,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:41:56,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:41:56,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:41:56,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:41:56,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:41:56,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:41:56,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:41:56,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:41:56,066 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:41:56,104 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:41:56,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:41:56,105 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:41:56,105 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:41:56,106 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:41:56,106 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:41:56,107 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:41:56,107 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:41:56,107 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:41:56,107 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:41:56,109 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:41:56,109 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:41:56,109 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:41:56,109 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:41:56,110 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:41:56,110 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:41:56,110 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:41:56,111 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:41:56,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:41:56,112 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:41:56,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:41:56,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:41:56,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:41:56,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:41:56,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:41:56,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:41:56,113 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:41:56,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:41:56,114 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:41:56,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:41:56,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:41:56,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:41:56,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:41:56,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:41:56,116 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:41:56,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:41:56,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:41:56,117 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:41:56,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:41:56,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:41:56,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:41:56,118 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_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e5c7c8f34d0399e1ec13072e237ea7df9536407415bc8e3ff2e61c34b30de96 [2022-11-26 00:41:56,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:41:56,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:41:56,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:41:56,463 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:41:56,464 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:41:56,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2022-11-26 00:41:59,489 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:41:59,722 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:41:59,723 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2022-11-26 00:41:59,733 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/data/09ec6eeb4/9c128951b9a449df8d741610d631bdf8/FLAGae20caf4e [2022-11-26 00:41:59,752 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/data/09ec6eeb4/9c128951b9a449df8d741610d631bdf8 [2022-11-26 00:41:59,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:41:59,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:41:59,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:41:59,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:41:59,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:41:59,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:41:59" (1/1) ... [2022-11-26 00:41:59,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e5572a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:41:59, skipping insertion in model container [2022-11-26 00:41:59,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:41:59" (1/1) ... [2022-11-26 00:41:59,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:41:59,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:42:00,076 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_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2022-11-26 00:42:00,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:42:00,098 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:42:00,166 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_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lh-reducer.c[8507,8520] [2022-11-26 00:42:00,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:42:00,183 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:42:00,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:00 WrapperNode [2022-11-26 00:42:00,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:42:00,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:42:00,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:42:00,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:42:00,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:00" (1/1) ... [2022-11-26 00:42:00,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:00" (1/1) ... [2022-11-26 00:42:00,251 INFO L138 Inliner]: procedures = 17, calls = 203, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 373 [2022-11-26 00:42:00,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:42:00,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:42:00,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:42:00,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:42:00,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:00" (1/1) ... [2022-11-26 00:42:00,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:00" (1/1) ... [2022-11-26 00:42:00,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:00" (1/1) ... [2022-11-26 00:42:00,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:00" (1/1) ... [2022-11-26 00:42:00,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:00" (1/1) ... [2022-11-26 00:42:00,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:00" (1/1) ... [2022-11-26 00:42:00,298 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:00" (1/1) ... [2022-11-26 00:42:00,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:00" (1/1) ... [2022-11-26 00:42:00,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:42:00,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:42:00,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:42:00,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:42:00,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:00" (1/1) ... [2022-11-26 00:42:00,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:42:00,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:42:00,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:42:00,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:42:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 00:42:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2022-11-26 00:42:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:42:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:42:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:42:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:42:00,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:42:00,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:42:00,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:42:00,496 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:42:00,498 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:42:01,293 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:42:01,309 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:42:01,310 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:42:01,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:42:01 BoogieIcfgContainer [2022-11-26 00:42:01,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:42:01,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:42:01,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:42:01,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:42:01,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:41:59" (1/3) ... [2022-11-26 00:42:01,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625555d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:42:01, skipping insertion in model container [2022-11-26 00:42:01,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:00" (2/3) ... [2022-11-26 00:42:01,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625555d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:42:01, skipping insertion in model container [2022-11-26 00:42:01,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:42:01" (3/3) ... [2022-11-26 00:42:01,322 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2022-11-26 00:42:01,344 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:42:01,345 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:42:01,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:42:01,403 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;@2fb3bc93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:42:01,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:42:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 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) [2022-11-26 00:42:01,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:42:01,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:42:01,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:42:01,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:42:01,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:42:01,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1202647943, now seen corresponding path program 1 times [2022-11-26 00:42:01,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:42:01,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896976472] [2022-11-26 00:42:01,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:42:01,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:42:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:42:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:42:02,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:42:02,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896976472] [2022-11-26 00:42:02,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896976472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:42:02,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:42:02,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:42:02,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850188723] [2022-11-26 00:42:02,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:42:02,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:42:02,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:42:02,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:42:02,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:42:02,043 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:42:02,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:42:02,094 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2022-11-26 00:42:02,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:42:02,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-26 00:42:02,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:42:02,104 INFO L225 Difference]: With dead ends: 27 [2022-11-26 00:42:02,104 INFO L226 Difference]: Without dead ends: 16 [2022-11-26 00:42:02,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:42:02,110 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:42:02,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 26 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:42:02,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-26 00:42:02,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2022-11-26 00:42:02,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 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) [2022-11-26 00:42:02,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-11-26 00:42:02,142 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2022-11-26 00:42:02,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:42:02,142 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-11-26 00:42:02,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:42:02,143 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-11-26 00:42:02,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-26 00:42:02,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:42:02,143 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:42:02,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:42:02,144 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:42:02,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:42:02,145 INFO L85 PathProgramCache]: Analyzing trace with hash 507664458, now seen corresponding path program 1 times [2022-11-26 00:42:02,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:42:02,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066697459] [2022-11-26 00:42:02,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:42:02,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:42:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:42:02,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:42:02,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:42:02,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066697459] [2022-11-26 00:42:02,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066697459] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:42:02,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468587298] [2022-11-26 00:42:02,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:42:02,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:42:02,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:42:02,522 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:42:02,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:42:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:42:02,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:42:02,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:42:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:42:02,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:42:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:42:02,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468587298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:42:02,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1801437022] [2022-11-26 00:42:02,964 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-26 00:42:02,965 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:42:02,969 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:42:02,975 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:42:02,979 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:42:03,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:03,196 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-26 00:42:03,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 23 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 85 [2022-11-26 00:42:03,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:03,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 22 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 54 [2022-11-26 00:42:03,839 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 [2022-11-26 00:42:04,126 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 [2022-11-26 00:42:04,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:04,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:04,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:04,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:04,438 INFO L321 Elim1Store]: treesize reduction 40, result has 48.1 percent of original size [2022-11-26 00:42:04,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 26 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 78 [2022-11-26 00:42:04,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:04,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:04,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:04,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:04,684 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-26 00:42:04,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 52 treesize of output 89 [2022-11-26 00:42:07,893 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:42:08,914 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '145#(and (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1.offset|) (<= 0 ~Id_MCDC_93~0) (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1.base|) (<= 0 |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.base|) (<= |ULTIMATE.start_main_~__tmp_1~0#1.offset| 0) (not (< (mod ~Id_MCDC_93~0 4294967296) 42)) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1|) (<= 0 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.base|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.base|) (= |ULTIMATE.start_main_~main__Id_MCDC_116~0#1| 0) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.offset|) (= |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.offset| 0) (= |ULTIMATE.start_main_~main__Id_MCDC_115~0#1| 0) (<= |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.offset| 0) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~1#1| |ULTIMATE.start_main_~__tmp_3~0#1|) (= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~1#1| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~0#1| 0) (= ~__return_main~0 0) (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-26 00:42:08,914 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:42:08,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:42:08,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-26 00:42:08,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529850874] [2022-11-26 00:42:08,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:42:08,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:42:08,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:42:08,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:42:08,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-26 00:42:08,920 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2022-11-26 00:42:09,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:42:09,137 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-11-26 00:42:09,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:42:09,138 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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 12 [2022-11-26 00:42:09,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:42:09,139 INFO L225 Difference]: With dead ends: 33 [2022-11-26 00:42:09,139 INFO L226 Difference]: Without dead ends: 30 [2022-11-26 00:42:09,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2022-11-26 00:42:09,140 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 30 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:42:09,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 31 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:42:09,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-26 00:42:09,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-11-26 00:42:09,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 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) [2022-11-26 00:42:09,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-11-26 00:42:09,150 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 12 [2022-11-26 00:42:09,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:42:09,150 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-11-26 00:42:09,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2022-11-26 00:42:09,151 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-11-26 00:42:09,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-26 00:42:09,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:42:09,153 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2022-11-26 00:42:09,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:42:09,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:42:09,363 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:42:09,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:42:09,364 INFO L85 PathProgramCache]: Analyzing trace with hash -522733127, now seen corresponding path program 2 times [2022-11-26 00:42:09,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:42:09,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904356951] [2022-11-26 00:42:09,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:42:09,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:42:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:42:09,723 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:42:09,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:42:09,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904356951] [2022-11-26 00:42:09,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904356951] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:42:09,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67402601] [2022-11-26 00:42:09,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:42:09,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:42:09,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:42:09,726 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:42:09,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:42:10,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-26 00:42:10,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:42:10,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-26 00:42:10,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:42:10,154 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:42:10,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-26 00:42:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-26 00:42:10,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:42:11,086 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-26 00:42:11,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67402601] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:42:11,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1861291519] [2022-11-26 00:42:11,089 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-26 00:42:11,090 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:42:11,090 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:42:11,090 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:42:11,090 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:42:11,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:11,193 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-26 00:42:11,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 23 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 85 [2022-11-26 00:42:11,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:11,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 22 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 54 [2022-11-26 00:42:11,548 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 [2022-11-26 00:42:11,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:11,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:11,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:11,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:11,729 INFO L321 Elim1Store]: treesize reduction 40, result has 48.1 percent of original size [2022-11-26 00:42:11,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 26 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 78 [2022-11-26 00:42:11,890 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 [2022-11-26 00:42:12,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:12,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:12,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:12,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:42:12,162 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-26 00:42:12,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 52 treesize of output 89 [2022-11-26 00:42:14,804 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:42:16,008 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '410#(and (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1.offset|) (<= 0 ~Id_MCDC_93~0) (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1.base|) (<= 0 |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.base|) (<= |ULTIMATE.start_main_~__tmp_1~0#1.offset| 0) (not (< (mod ~Id_MCDC_93~0 4294967296) 42)) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1|) (<= 0 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.base|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.base|) (= |ULTIMATE.start_main_~main__Id_MCDC_116~0#1| 0) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.offset|) (= |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.offset| 0) (= |ULTIMATE.start_main_~main__Id_MCDC_115~0#1| 0) (<= |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.offset| 0) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~1#1| |ULTIMATE.start_main_~__tmp_3~0#1|) (= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~1#1| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~0#1| 0) (= ~__return_main~0 0) (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-26 00:42:16,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:42:16,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:42:16,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-11-26 00:42:16,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359846663] [2022-11-26 00:42:16,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:42:16,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-26 00:42:16,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:42:16,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-26 00:42:16,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2022-11-26 00:42:16,011 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 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) [2022-11-26 00:42:17,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:42:17,081 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2022-11-26 00:42:17,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-26 00:42:17,082 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 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 27 [2022-11-26 00:42:17,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:42:17,082 INFO L225 Difference]: With dead ends: 39 [2022-11-26 00:42:17,082 INFO L226 Difference]: Without dead ends: 0 [2022-11-26 00:42:17,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=333, Invalid=1307, Unknown=0, NotChecked=0, Total=1640 [2022-11-26 00:42:17,084 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 71 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:42:17,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 29 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:42:17,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-26 00:42:17,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-26 00:42:17,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-26 00:42:17,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-26 00:42:17,091 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2022-11-26 00:42:17,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:42:17,092 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-26 00:42:17,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 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) [2022-11-26 00:42:17,092 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-26 00:42:17,092 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-26 00:42:17,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:42:17,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:42:17,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:42:17,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-26 00:42:17,434 INFO L899 garLoopResultBuilder]: For program point L161(lines 161 236) no Hoare annotation was computed. [2022-11-26 00:42:17,434 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-26 00:42:17,434 INFO L899 garLoopResultBuilder]: For program point L190(lines 190 208) no Hoare annotation was computed. [2022-11-26 00:42:17,434 INFO L899 garLoopResultBuilder]: For program point L221(line 221) no Hoare annotation was computed. [2022-11-26 00:42:17,434 INFO L899 garLoopResultBuilder]: For program point L219(lines 219 227) no Hoare annotation was computed. [2022-11-26 00:42:17,435 INFO L899 garLoopResultBuilder]: For program point L182(lines 182 229) no Hoare annotation was computed. [2022-11-26 00:42:17,435 INFO L899 garLoopResultBuilder]: For program point L180(lines 180 234) no Hoare annotation was computed. [2022-11-26 00:42:17,435 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 207) no Hoare annotation was computed. [2022-11-26 00:42:17,435 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-26 00:42:17,435 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 221) no Hoare annotation was computed. [2022-11-26 00:42:17,436 INFO L895 garLoopResultBuilder]: At program point L202(lines 167 235) the Hoare annotation is: (let ((.cse0 (= (select (select |#memory_int| |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.base|) (+ |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.offset| 492)) 0))) (or (and (= |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1| 0) .cse0 (= ~Id_MCDC_93~0 0)) (let ((.cse1 (mod (+ |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1| 4294967295) 4294967296))) (and (< (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296) 42) (< (mod ~Id_MCDC_93~0 4294967296) 42) (not (= (* .cse1 12) 492)) (< .cse1 42) .cse0)) (and (<= |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1| 1) (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= 1 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1|) (<= ~Id_MCDC_93~0 1) .cse0))) [2022-11-26 00:42:17,436 INFO L902 garLoopResultBuilder]: At program point L233(lines 133 237) the Hoare annotation is: true [2022-11-26 00:42:17,439 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2022-11-26 00:42:17,441 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:42:17,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:42:17 BoogieIcfgContainer [2022-11-26 00:42:17,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:42:17,457 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:42:17,458 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:42:17,458 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:42:17,458 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:42:01" (3/4) ... [2022-11-26 00:42:17,461 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-26 00:42:17,473 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-26 00:42:17,474 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-26 00:42:17,474 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-26 00:42:17,475 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-26 00:42:17,476 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-26 00:42:17,601 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 00:42:17,601 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:42:17,602 INFO L158 Benchmark]: Toolchain (without parser) took 17845.59ms. Allocated memory was 174.1MB in the beginning and 390.1MB in the end (delta: 216.0MB). Free memory was 135.8MB in the beginning and 231.2MB in the end (delta: -95.4MB). Peak memory consumption was 121.1MB. Max. memory is 16.1GB. [2022-11-26 00:42:17,602 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 138.4MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:42:17,603 INFO L158 Benchmark]: CACSL2BoogieTranslator took 423.56ms. Allocated memory is still 174.1MB. Free memory was 135.8MB in the beginning and 119.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-26 00:42:17,603 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.47ms. Allocated memory is still 174.1MB. Free memory was 119.0MB in the beginning and 115.4MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:42:17,603 INFO L158 Benchmark]: Boogie Preprocessor took 52.99ms. Allocated memory is still 174.1MB. Free memory was 115.4MB in the beginning and 112.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:42:17,604 INFO L158 Benchmark]: RCFGBuilder took 1007.34ms. Allocated memory is still 174.1MB. Free memory was 112.2MB in the beginning and 78.8MB in the end (delta: 33.4MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2022-11-26 00:42:17,604 INFO L158 Benchmark]: TraceAbstraction took 16141.95ms. Allocated memory was 174.1MB in the beginning and 390.1MB in the end (delta: 216.0MB). Free memory was 78.5MB in the beginning and 243.8MB in the end (delta: -165.3MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. [2022-11-26 00:42:17,605 INFO L158 Benchmark]: Witness Printer took 144.14ms. Allocated memory is still 390.1MB. Free memory was 243.8MB in the beginning and 231.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-26 00:42:17,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 138.4MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 423.56ms. Allocated memory is still 174.1MB. Free memory was 135.8MB in the beginning and 119.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.47ms. Allocated memory is still 174.1MB. Free memory was 119.0MB in the beginning and 115.4MB in the end (delta: 3.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.99ms. Allocated memory is still 174.1MB. Free memory was 115.4MB in the beginning and 112.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1007.34ms. Allocated memory is still 174.1MB. Free memory was 112.2MB in the beginning and 78.8MB in the end (delta: 33.4MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. * TraceAbstraction took 16141.95ms. Allocated memory was 174.1MB in the beginning and 390.1MB in the end (delta: 216.0MB). Free memory was 78.5MB in the beginning and 243.8MB in the end (delta: -165.3MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. * Witness Printer took 144.14ms. Allocated memory is still 390.1MB. Free memory was 243.8MB in the beginning and 231.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 221]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.1s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 116 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 116 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 65 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 196 IncrementalHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 21 mSDtfsCounter, 196 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 87 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 11 NumberOfFragments, 83 HoareAnnotationTreeSize, 2 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 233 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 85 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 117 ConstructedInterpolants, 16 QuantifiedInterpolants, 1336 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1124 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 45/135 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: (((Id_MCDC_89__Id_MCDC_96 == 0 && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) && Id_MCDC_93 == 0) || (((((Id_MCDC_93 + 4294967295) % 4294967296 < 42 && Id_MCDC_93 % 4294967296 < 42) && !((Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 * 12 == 492)) && (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0)) || ((((Id_MCDC_89__Id_MCDC_96 <= 1 && 0 < Id_MCDC_93 / 4294967296 + 1) && 1 <= Id_MCDC_89__Id_MCDC_96) && Id_MCDC_93 <= 1) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0) - InvariantResult [Line: 133]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-26 00:42:17,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cd9e5fa-e00d-4cd6-bb11-c885e4939e7f/bin/utaipan-ByfvJB40ur/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 Writing output log to file Ultimate.log Result: TRUE