./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ms2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ms2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 125fe310e2ae1e5a109eb21d52d95bf156448ac6c5b2e6793bd0b6f80e48ce1d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:27:24,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:27:24,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:27:25,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:27:25,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:27:25,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:27:25,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:27:25,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:27:25,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:27:25,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:27:25,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:27:25,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:27:25,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:27:25,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:27:25,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:27:25,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:27:25,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:27:25,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:27:25,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:27:25,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:27:25,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:27:25,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:27:25,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:27:25,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:27:25,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:27:25,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:27:25,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:27:25,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:27:25,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:27:25,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:27:25,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:27:25,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:27:25,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:27:25,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:27:25,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:27:25,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:27:25,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:27:25,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:27:25,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:27:25,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:27:25,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:27:25,074 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:27:25,103 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:27:25,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:27:25,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:27:25,105 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:27:25,105 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:27:25,106 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:27:25,106 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:27:25,106 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:27:25,106 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:27:25,107 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:27:25,107 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:27:25,107 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:27:25,108 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:27:25,108 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:27:25,108 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:27:25,108 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:27:25,109 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:27:25,109 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:27:25,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:27:25,110 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:27:25,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:27:25,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:27:25,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:27:25,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:27:25,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:27:25,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:27:25,112 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:27:25,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:27:25,112 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:27:25,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:27:25,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:27:25,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:27:25,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:27:25,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:27:25,114 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:27:25,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:27:25,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:27:25,115 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:27:25,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:27:25,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:27:25,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:27:25,116 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_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 125fe310e2ae1e5a109eb21d52d95bf156448ac6c5b2e6793bd0b6f80e48ce1d [2022-11-03 03:27:25,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:27:25,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:27:25,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:27:25,509 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:27:25,514 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:27:25,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/array-fpi/ms2.c [2022-11-03 03:27:25,592 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/data/bafe4d1e3/c5b7291413414537b506f66aa74fe98a/FLAG6fc7c5dbb [2022-11-03 03:27:26,044 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:27:26,045 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/sv-benchmarks/c/array-fpi/ms2.c [2022-11-03 03:27:26,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/data/bafe4d1e3/c5b7291413414537b506f66aa74fe98a/FLAG6fc7c5dbb [2022-11-03 03:27:26,443 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/data/bafe4d1e3/c5b7291413414537b506f66aa74fe98a [2022-11-03 03:27:26,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:27:26,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:27:26,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:27:26,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:27:26,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:27:26,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:27:26" (1/1) ... [2022-11-03 03:27:26,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48b115af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:26, skipping insertion in model container [2022-11-03 03:27:26,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:27:26" (1/1) ... [2022-11-03 03:27:26,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:27:26,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:27:26,746 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/sv-benchmarks/c/array-fpi/ms2.c[586,599] [2022-11-03 03:27:26,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:27:26,779 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:27:26,794 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/sv-benchmarks/c/array-fpi/ms2.c[586,599] [2022-11-03 03:27:26,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:27:26,818 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:27:26,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:26 WrapperNode [2022-11-03 03:27:26,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:27:26,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:27:26,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:27:26,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:27:26,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:26" (1/1) ... [2022-11-03 03:27:26,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:26" (1/1) ... [2022-11-03 03:27:26,860 INFO L138 Inliner]: procedures = 17, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-11-03 03:27:26,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:27:26,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:27:26,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:27:26,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:27:26,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:26" (1/1) ... [2022-11-03 03:27:26,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:26" (1/1) ... [2022-11-03 03:27:26,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:26" (1/1) ... [2022-11-03 03:27:26,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:26" (1/1) ... [2022-11-03 03:27:26,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:26" (1/1) ... [2022-11-03 03:27:26,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:26" (1/1) ... [2022-11-03 03:27:26,903 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:26" (1/1) ... [2022-11-03 03:27:26,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:26" (1/1) ... [2022-11-03 03:27:26,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:27:26,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:27:26,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:27:26,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:27:26,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:26" (1/1) ... [2022-11-03 03:27:26,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:27:26,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:27:26,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:27:26,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:27:27,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:27:27,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:27:27,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:27:27,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:27:27,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:27:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:27:27,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:27:27,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:27:27,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:27:27,141 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:27:27,143 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:27:27,400 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:27:27,479 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:27:27,480 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 03:27:27,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:27:27 BoogieIcfgContainer [2022-11-03 03:27:27,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:27:27,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:27:27,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:27:27,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:27:27,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:27:26" (1/3) ... [2022-11-03 03:27:27,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463d51d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:27:27, skipping insertion in model container [2022-11-03 03:27:27,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:27:26" (2/3) ... [2022-11-03 03:27:27,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463d51d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:27:27, skipping insertion in model container [2022-11-03 03:27:27,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:27:27" (3/3) ... [2022-11-03 03:27:27,514 INFO L112 eAbstractionObserver]: Analyzing ICFG ms2.c [2022-11-03 03:27:27,537 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:27:27,537 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:27:27,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:27:27,606 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;@4f4c44cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:27:27,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:27:27,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:27:27,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 03:27:27,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:27:27,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 03:27:27,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:27:27,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:27:27,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1569259291, now seen corresponding path program 1 times [2022-11-03 03:27:27,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:27:27,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362035647] [2022-11-03 03:27:27,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:27:27,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:27:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:27:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:27:28,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:27:28,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362035647] [2022-11-03 03:27:28,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362035647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:27:28,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:27:28,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:27:28,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157745833] [2022-11-03 03:27:28,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:27:28,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:27:28,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:27:28,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:27:28,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:27:28,084 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:27:28,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:27:28,159 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-11-03 03:27:28,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:27:28,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-03 03:27:28,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:27:28,170 INFO L225 Difference]: With dead ends: 18 [2022-11-03 03:27:28,171 INFO L226 Difference]: Without dead ends: 8 [2022-11-03 03:27:28,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:27:28,183 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:27:28,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:27:28,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-03 03:27:28,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-03 03:27:28,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:27:28,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2022-11-03 03:27:28,224 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2022-11-03 03:27:28,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:27:28,225 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-11-03 03:27:28,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:27:28,226 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2022-11-03 03:27:28,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 03:27:28,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:27:28,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:27:28,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:27:28,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:27:28,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:27:28,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1413400264, now seen corresponding path program 1 times [2022-11-03 03:27:28,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:27:28,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597128663] [2022-11-03 03:27:28,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:27:28,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:27:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:27:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:27:28,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:27:28,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597128663] [2022-11-03 03:27:28,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597128663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:27:28,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:27:28,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:27:28,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133895567] [2022-11-03 03:27:28,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:27:28,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:27:28,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:27:28,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:27:28,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:27:28,462 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. 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) [2022-11-03 03:27:28,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:27:28,491 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2022-11-03 03:27:28,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:27:28,493 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 [2022-11-03 03:27:28,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:27:28,494 INFO L225 Difference]: With dead ends: 12 [2022-11-03 03:27:28,494 INFO L226 Difference]: Without dead ends: 9 [2022-11-03 03:27:28,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:27:28,504 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:27:28,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:27:28,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-03 03:27:28,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-03 03:27:28,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:27:28,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-11-03 03:27:28,512 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2022-11-03 03:27:28,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:27:28,512 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-11-03 03:27:28,513 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) [2022-11-03 03:27:28,513 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-11-03 03:27:28,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 03:27:28,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:27:28,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:27:28,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:27:28,514 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:27:28,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:27:28,515 INFO L85 PathProgramCache]: Analyzing trace with hash -865774635, now seen corresponding path program 1 times [2022-11-03 03:27:28,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:27:28,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709098284] [2022-11-03 03:27:28,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:27:28,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:27:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:27:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:27:28,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:27:28,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709098284] [2022-11-03 03:27:28,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709098284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:27:28,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907361720] [2022-11-03 03:27:28,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:27:28,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:27:28,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:27:28,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:27:28,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:27:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:27:29,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 03:27:29,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:27:29,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:27:29,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 03:27:29,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:27:29,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:27:29,504 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:27:29,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 51 [2022-11-03 03:27:29,527 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:27:29,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2022-11-03 03:27:29,599 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2022-11-03 03:27:29,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-03 03:27:29,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2022-11-03 03:27:29,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:27:29,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907361720] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:27:29,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [709148391] [2022-11-03 03:27:29,678 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-03 03:27:29,678 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:27:29,682 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:27:29,689 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:27:29,689 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:27:29,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:29,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:29,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:29,951 INFO L356 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-03 03:27:29,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-03 03:27:30,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:30,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:30,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2022-11-03 03:27:30,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 88 [2022-11-03 03:27:30,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:30,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:30,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:30,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:30,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 03:27:30,537 INFO L356 Elim1Store]: treesize reduction 222, result has 13.6 percent of original size [2022-11-03 03:27:30,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 19 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 12 case distinctions, treesize of input 425 treesize of output 422 [2022-11-03 03:27:30,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2022-11-03 03:27:30,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:27:30,899 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:27:30,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:30,918 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:27:30,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2022-11-03 03:27:30,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:27:30,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:30,993 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:27:30,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2022-11-03 03:27:31,013 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:27:31,449 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '137#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem10#1|) (= (ite (<= |ULTIMATE.start_main_#t~mem10#1| ~N~0) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-11-03 03:27:31,449 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:27:31,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:27:31,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-03 03:27:31,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228592948] [2022-11-03 03:27:31,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:27:31,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 03:27:31,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:27:31,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 03:27:31,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:27:31,452 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:27:31,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:27:31,525 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-11-03 03:27:31,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:27:31,526 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 03:27:31,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:27:31,526 INFO L225 Difference]: With dead ends: 13 [2022-11-03 03:27:31,527 INFO L226 Difference]: Without dead ends: 10 [2022-11-03 03:27:31,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:27:31,528 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:27:31,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 12 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:27:31,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-03 03:27:31,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-03 03:27:31,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:27:31,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-11-03 03:27:31,533 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2022-11-03 03:27:31,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:27:31,533 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-11-03 03:27:31,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:27:31,534 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-11-03 03:27:31,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 03:27:31,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:27:31,534 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:27:31,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:27:31,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:27:31,759 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:27:31,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:27:31,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1069249320, now seen corresponding path program 2 times [2022-11-03 03:27:31,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:27:31,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755237539] [2022-11-03 03:27:31,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:27:31,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:27:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:27:31,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:27:31,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:27:31,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755237539] [2022-11-03 03:27:31,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755237539] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:27:31,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067607126] [2022-11-03 03:27:31,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:27:31,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:27:31,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:27:31,903 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:27:31,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:27:32,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 03:27:32,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:27:32,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:27:32,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:27:32,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:27:32,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:27:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:27:32,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067607126] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:27:32,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [489497038] [2022-11-03 03:27:32,152 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-03 03:27:32,152 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:27:32,153 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:27:32,153 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:27:32,156 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:27:32,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:32,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:32,282 INFO L356 Elim1Store]: treesize reduction 68, result has 33.3 percent of original size [2022-11-03 03:27:32,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 57 [2022-11-03 03:27:32,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:32,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:32,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:32,412 INFO L356 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2022-11-03 03:27:32,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2022-11-03 03:27:32,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 117 [2022-11-03 03:27:32,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:32,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:32,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:32,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:32,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:32,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:32,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:32,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:32,727 INFO L356 Elim1Store]: treesize reduction 216, result has 9.2 percent of original size [2022-11-03 03:27:32,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 24 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 11 case distinctions, treesize of input 448 treesize of output 439 [2022-11-03 03:27:32,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2022-11-03 03:27:32,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:27:32,968 INFO L356 Elim1Store]: treesize reduction 56, result has 55.9 percent of original size [2022-11-03 03:27:32,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 156 [2022-11-03 03:27:33,027 INFO L356 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2022-11-03 03:27:33,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 47 [2022-11-03 03:27:33,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 03:27:33,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:33,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-11-03 03:27:33,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-03 03:27:33,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 03:27:33,267 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 03:27:33,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2022-11-03 03:27:33,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 03:27:33,300 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:27:33,652 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '234#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem10#1|) (= (ite (<= |ULTIMATE.start_main_#t~mem10#1| ~N~0) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0) (not (< |ULTIMATE.start_main_~i~0#1| ~N~0)))' at error location [2022-11-03 03:27:33,652 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:27:33,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:27:33,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-11-03 03:27:33,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205708945] [2022-11-03 03:27:33,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:27:33,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 03:27:33,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:27:33,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 03:27:33,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:27:33,655 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:27:33,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:27:33,720 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-11-03 03:27:33,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:27:33,721 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-03 03:27:33,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:27:33,721 INFO L225 Difference]: With dead ends: 17 [2022-11-03 03:27:33,722 INFO L226 Difference]: Without dead ends: 11 [2022-11-03 03:27:33,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:27:33,723 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:27:33,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:27:33,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-03 03:27:33,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-03 03:27:33,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:27:33,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-03 03:27:33,728 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2022-11-03 03:27:33,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:27:33,729 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-03 03:27:33,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:27:33,730 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-03 03:27:33,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 03:27:33,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:27:33,731 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-03 03:27:33,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:27:33,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:27:33,949 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:27:33,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:27:33,950 INFO L85 PathProgramCache]: Analyzing trace with hash -732622939, now seen corresponding path program 3 times [2022-11-03 03:27:33,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:27:33,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223270815] [2022-11-03 03:27:33,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:27:33,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:27:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:27:34,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:27:34,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:27:34,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223270815] [2022-11-03 03:27:34,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223270815] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:27:34,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627834149] [2022-11-03 03:27:34,760 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 03:27:34,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:27:34,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:27:34,762 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:27:34,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3993581f-a8fb-473c-9aaa-54ff06149681/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:27:34,832 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 03:27:34,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:27:34,834 WARN L261 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 03:27:34,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:27:34,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 03:27:35,626 INFO L356 Elim1Store]: treesize reduction 96, result has 62.5 percent of original size [2022-11-03 03:27:35,626 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 182 treesize of output 301 [2022-11-03 03:28:57,950 WARN L234 SmtUtils]: Spent 1.16m on a formula simplification. DAG size of input: 305 DAG size of output: 115 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:28:59,729 INFO L356 Elim1Store]: treesize reduction 1268, result has 28.4 percent of original size [2022-11-03 03:28:59,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 65 case distinctions, treesize of input 452 treesize of output 791 [2022-11-03 03:32:07,574 WARN L234 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 1084 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:33:33,651 WARN L234 SmtUtils]: Spent 7.52s on a formula simplification that was a NOOP. DAG size: 2229 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:36:15,843 WARN L234 SmtUtils]: Spent 7.70s on a formula simplification that was a NOOP. DAG size: 827 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-03 03:39:10,328 WARN L234 SmtUtils]: Spent 55.15s on a formula simplification that was a NOOP. DAG size: 7010 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)