./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/Mono5_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/Mono5_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh --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 0d27ce9425b362883f32c5ccf3973d31d4f8100e5e6b8fcc1a4527c07eb2b71c --- 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-2329fc7 [2022-12-14 11:57:53,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:57:53,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:57:53,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:57:53,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:57:53,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:57:53,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:57:53,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:57:53,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:57:53,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:57:53,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:57:53,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:57:53,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:57:53,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:57:53,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:57:53,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:57:53,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:57:53,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:57:53,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:57:53,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:57:53,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:57:53,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:57:53,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:57:53,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:57:53,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:57:53,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:57:53,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:57:53,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:57:53,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:57:53,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:57:53,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:57:53,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:57:53,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:57:53,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:57:53,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:57:53,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:57:53,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:57:53,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:57:53,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:57:53,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:57:53,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:57:53,979 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 11:57:53,998 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:57:53,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:57:53,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:57:53,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:57:53,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:57:53,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:57:54,000 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:57:54,000 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:57:54,000 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:57:54,000 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:57:54,000 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:57:54,000 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:57:54,001 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:57:54,001 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:57:54,001 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:57:54,001 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:57:54,001 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:57:54,001 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:57:54,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:57:54,002 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:57:54,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:57:54,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:57:54,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:57:54,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:57:54,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:57:54,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:57:54,003 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:57:54,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:57:54,003 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:57:54,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:57:54,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:57:54,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:57:54,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:57:54,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:57:54,004 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:57:54,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:57:54,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:57:54,005 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:57:54,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:57:54,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:57:54,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:57:54,005 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_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d27ce9425b362883f32c5ccf3973d31d4f8100e5e6b8fcc1a4527c07eb2b71c [2022-12-14 11:57:54,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:57:54,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:57:54,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:57:54,210 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:57:54,210 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:57:54,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/loops-crafted-1/Mono5_1.c [2022-12-14 11:57:56,873 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:57:57,008 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:57:57,008 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/sv-benchmarks/c/loops-crafted-1/Mono5_1.c [2022-12-14 11:57:57,012 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/data/de12fab37/3767433b5a654a40b81c10e642637ee5/FLAG2c43e4325 [2022-12-14 11:57:57,024 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/data/de12fab37/3767433b5a654a40b81c10e642637ee5 [2022-12-14 11:57:57,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:57:57,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:57:57,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:57:57,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:57:57,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:57:57,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:57:57" (1/1) ... [2022-12-14 11:57:57,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c4b8fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:57:57, skipping insertion in model container [2022-12-14 11:57:57,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:57:57" (1/1) ... [2022-12-14 11:57:57,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:57:57,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:57:57,161 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_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/sv-benchmarks/c/loops-crafted-1/Mono5_1.c[311,324] [2022-12-14 11:57:57,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:57:57,178 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:57:57,186 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_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/sv-benchmarks/c/loops-crafted-1/Mono5_1.c[311,324] [2022-12-14 11:57:57,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:57:57,198 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:57:57,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:57:57 WrapperNode [2022-12-14 11:57:57,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:57:57,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:57:57,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:57:57,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:57:57,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:57:57" (1/1) ... [2022-12-14 11:57:57,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:57:57" (1/1) ... [2022-12-14 11:57:57,220 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2022-12-14 11:57:57,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:57:57,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:57:57,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:57:57,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:57:57,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:57:57" (1/1) ... [2022-12-14 11:57:57,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:57:57" (1/1) ... [2022-12-14 11:57:57,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:57:57" (1/1) ... [2022-12-14 11:57:57,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:57:57" (1/1) ... [2022-12-14 11:57:57,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:57:57" (1/1) ... [2022-12-14 11:57:57,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:57:57" (1/1) ... [2022-12-14 11:57:57,234 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:57:57" (1/1) ... [2022-12-14 11:57:57,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:57:57" (1/1) ... [2022-12-14 11:57:57,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:57:57,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:57:57,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:57:57,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:57:57,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:57:57" (1/1) ... [2022-12-14 11:57:57,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:57:57,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:57:57,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:57:57,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:57:57,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:57:57,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:57:57,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:57:57,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:57:57,354 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:57:57,356 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:57:57,422 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:57:57,447 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:57:57,447 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 11:57:57,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:57:57 BoogieIcfgContainer [2022-12-14 11:57:57,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:57:57,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:57:57,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:57:57,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:57:57,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:57:57" (1/3) ... [2022-12-14 11:57:57,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4997e7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:57:57, skipping insertion in model container [2022-12-14 11:57:57,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:57:57" (2/3) ... [2022-12-14 11:57:57,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4997e7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:57:57, skipping insertion in model container [2022-12-14 11:57:57,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:57:57" (3/3) ... [2022-12-14 11:57:57,455 INFO L112 eAbstractionObserver]: Analyzing ICFG Mono5_1.c [2022-12-14 11:57:57,469 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:57:57,469 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:57:57,504 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:57:57,509 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;@6c6bb92f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:57:57,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:57:57,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-12-14 11:57:57,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 11:57:57,516 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:57:57,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 11:57:57,517 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:57:57,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:57:57,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2067913, now seen corresponding path program 1 times [2022-12-14 11:57:57,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:57:57,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187719654] [2022-12-14 11:57:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:57:57,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:57:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:57:57,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:57:57,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:57:57,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187719654] [2022-12-14 11:57:57,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187719654] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:57:57,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:57:57,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:57:57,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516598384] [2022-12-14 11:57:57,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:57:57,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:57:57,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:57:57,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:57:57,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 11:57:57,771 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-12-14 11:57:57,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:57:57,818 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-12-14 11:57:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:57:57,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-12-14 11:57:57,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:57:57,828 INFO L225 Difference]: With dead ends: 15 [2022-12-14 11:57:57,828 INFO L226 Difference]: Without dead ends: 6 [2022-12-14 11:57:57,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:57:57,835 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:57:57,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 6 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:57:57,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-12-14 11:57:57,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-12-14 11:57:57,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2022-12-14 11:57:57,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2022-12-14 11:57:57,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2022-12-14 11:57:57,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:57:57,865 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-12-14 11:57:57,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-12-14 11:57:57,865 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-12-14 11:57:57,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 11:57:57,865 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:57:57,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 11:57:57,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:57:57,866 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:57:57,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:57:57,867 INFO L85 PathProgramCache]: Analyzing trace with hash 64062984, now seen corresponding path program 1 times [2022-12-14 11:57:57,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:57:57,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054350776] [2022-12-14 11:57:57,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:57:57,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:57:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:57:58,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:57:58,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:57:58,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054350776] [2022-12-14 11:57:58,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054350776] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:57:58,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605675445] [2022-12-14 11:57:58,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:57:58,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:57:58,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:57:58,033 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:57:58,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:57:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:57:58,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 11:57:58,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:57:58,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:57:58,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:57:58,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:57:58,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605675445] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:57:58,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [772557362] [2022-12-14 11:57:58,269 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-12-14 11:57:58,269 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:57:58,271 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:57:58,275 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:57:58,276 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:57:58,449 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:57:58,527 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '75#(and (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) (mod |ULTIMATE.start_main_~y~0#1| 4294967296))) (= |ULTIMATE.start_main_~y~0#1| 10000000) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= |ULTIMATE.start_main_~z~0#1| 5000000) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (ite (not (= (mod |ULTIMATE.start_main_~z~0#1| 4294967296) 0)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|))' at error location [2022-12-14 11:57:58,527 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:57:58,527 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:57:58,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-12-14 11:57:58,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394724570] [2022-12-14 11:57:58,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:57:58,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 11:57:58,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:57:58,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 11:57:58,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-12-14 11:57:58,530 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:57:58,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:57:58,614 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2022-12-14 11:57:58,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 11:57:58,614 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 11:57:58,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:57:58,615 INFO L225 Difference]: With dead ends: 16 [2022-12-14 11:57:58,615 INFO L226 Difference]: Without dead ends: 10 [2022-12-14 11:57:58,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-12-14 11:57:58,618 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:57:58,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 8 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:57:58,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-12-14 11:57:58,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-12-14 11:57:58,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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) [2022-12-14 11:57:58,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-12-14 11:57:58,623 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2022-12-14 11:57:58,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:57:58,623 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-12-14 11:57:58,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 11:57:58,623 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-12-14 11:57:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 11:57:58,624 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:57:58,624 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1] [2022-12-14 11:57:58,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:57:58,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:57:58,825 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:57:58,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:57:58,826 INFO L85 PathProgramCache]: Analyzing trace with hash -966203832, now seen corresponding path program 2 times [2022-12-14 11:57:58,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:57:58,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141264198] [2022-12-14 11:57:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:57:58,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:57:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:57:59,130 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:57:59,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:57:59,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141264198] [2022-12-14 11:57:59,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141264198] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:57:59,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693878383] [2022-12-14 11:57:59,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 11:57:59,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:57:59,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:57:59,132 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:57:59,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:57:59,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 11:57:59,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:57:59,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 11:57:59,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:57:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:57:59,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:58:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:58:00,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693878383] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:58:00,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [920318848] [2022-12-14 11:58:00,143 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-12-14 11:58:00,143 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:58:00,144 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:58:00,144 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:58:00,144 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:58:00,266 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:58:00,428 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '193#(and (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) (mod |ULTIMATE.start_main_~y~0#1| 4294967296))) (= |ULTIMATE.start_main_~y~0#1| 10000000) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= |ULTIMATE.start_main_~z~0#1| 5000000) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (ite (not (= (mod |ULTIMATE.start_main_~z~0#1| 4294967296) 0)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|))' at error location [2022-12-14 11:58:00,429 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:58:00,429 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:58:00,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-12-14 11:58:00,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700347118] [2022-12-14 11:58:00,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:58:00,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 11:58:00,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:58:00,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 11:58:00,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2022-12-14 11:58:00,431 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 21 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 20 states have internal predecessors, (23), 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) [2022-12-14 11:58:01,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:58:01,579 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2022-12-14 11:58:01,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-14 11:58:01,579 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 20 states have internal predecessors, (23), 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 [2022-12-14 11:58:01,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:58:01,580 INFO L225 Difference]: With dead ends: 34 [2022-12-14 11:58:01,580 INFO L226 Difference]: Without dead ends: 21 [2022-12-14 11:58:01,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=383, Invalid=949, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 11:58:01,582 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 33 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:58:01,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 11 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:58:01,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-14 11:58:01,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-12-14 11:58:01,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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) [2022-12-14 11:58:01,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-12-14 11:58:01,587 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 9 [2022-12-14 11:58:01,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:58:01,588 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-12-14 11:58:01,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 20 states have internal predecessors, (23), 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) [2022-12-14 11:58:01,588 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-12-14 11:58:01,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 11:58:01,588 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:58:01,588 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1] [2022-12-14 11:58:01,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:58:01,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:58:01,790 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:58:01,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:58:01,792 INFO L85 PathProgramCache]: Analyzing trace with hash 417508553, now seen corresponding path program 3 times [2022-12-14 11:58:01,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:58:01,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611981042] [2022-12-14 11:58:01,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:58:01,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:58:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:58:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:58:02,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:58:02,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611981042] [2022-12-14 11:58:02,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611981042] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:58:02,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905793372] [2022-12-14 11:58:02,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 11:58:02,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:58:02,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:58:02,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:58:02,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:58:19,044 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 11:58:19,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 11:58:19,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 11:58:19,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:58:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:58:21,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:59:07,539 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:59:58,244 WARN L233 SmtUtils]: Spent 9.08s on a formula simplification that was a NOOP. DAG size: 84 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:00:37,492 WARN L233 SmtUtils]: Spent 14.91s on a formula simplification that was a NOOP. DAG size: 89 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:00:37,494 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:00:37,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905793372] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:00:37,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1958554043] [2022-12-14 12:00:37,496 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-12-14 12:00:37,496 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:00:37,496 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:00:37,497 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:00:37,497 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:00:37,533 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:00:37,728 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '479#(and (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) (mod |ULTIMATE.start_main_~y~0#1| 4294967296))) (= |ULTIMATE.start_main_~y~0#1| 10000000) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= |ULTIMATE.start_main_~z~0#1| 5000000) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (ite (not (= (mod |ULTIMATE.start_main_~z~0#1| 4294967296) 0)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|))' at error location [2022-12-14 12:00:37,728 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:00:37,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:00:37,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 53 [2022-12-14 12:00:37,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716670913] [2022-12-14 12:00:37,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:00:37,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-12-14 12:00:37,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:00:37,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-12-14 12:00:37,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1234, Invalid=1957, Unknown=1, NotChecked=0, Total=3192 [2022-12-14 12:00:37,732 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 54 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 53 states have internal predecessors, (57), 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) [2022-12-14 12:01:04,584 WARN L233 SmtUtils]: Spent 14.33s on a formula simplification that was a NOOP. DAG size: 91 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:01:20,250 WARN L233 SmtUtils]: Spent 8.31s on a formula simplification that was a NOOP. DAG size: 86 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:01:21,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 12:01:37,446 WARN L233 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:01:39,924 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (* 4294967295 |c_ULTIMATE.start_main_~z~0#1|))) (and (not (= (mod (+ .cse0 4) 4294967296) 0)) (not (= (mod (+ 5 .cse0) 4294967296) 0)) (not (= (mod (+ 8 .cse0) 4294967296) 0)) (not (= (mod (+ 7 .cse0) 4294967296) 0)) (not (= (mod (+ .cse0 10) 4294967296) 0)) (not (= (mod (+ .cse0 11) 4294967296) 0)) (not (= (mod (+ 6 .cse0) 4294967296) 0)) (not (= (mod (+ 2 .cse0) 4294967296) 0)) (not (= (mod (+ 3 .cse0) 4294967296) 0)) (not (= (mod (+ .cse0 13) 4294967296) 0)) (not (= (mod (+ .cse0 1) 4294967296) 0)) (not (= (mod (+ 9 .cse0) 4294967296) 0)) (not (= (mod .cse0 4294967296) 0)) (<= 1 |c_ULTIMATE.start___VERIFIER_assert_~cond#1|) (not (= (mod (+ 12 .cse0) 4294967296) 0)))) is different from false [2022-12-14 12:02:08,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:02:08,754 INFO L93 Difference]: Finished difference Result 89 states and 121 transitions. [2022-12-14 12:02:08,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-12-14 12:02:08,755 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 53 states have internal predecessors, (57), 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 20 [2022-12-14 12:02:08,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:02:08,756 INFO L225 Difference]: With dead ends: 89 [2022-12-14 12:02:08,756 INFO L226 Difference]: Without dead ends: 54 [2022-12-14 12:02:08,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 187.0s TimeCoverageRelationStatistics Valid=2408, Invalid=5426, Unknown=2, NotChecked=174, Total=8010 [2022-12-14 12:02:08,761 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 91 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-14 12:02:08,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 19 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-12-14 12:02:08,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-12-14 12:02:08,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-12-14 12:02:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 states have internal predecessors, (54), 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) [2022-12-14 12:02:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2022-12-14 12:02:08,785 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 20 [2022-12-14 12:02:08,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:02:08,785 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2022-12-14 12:02:08,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 53 states have internal predecessors, (57), 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) [2022-12-14 12:02:08,785 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2022-12-14 12:02:08,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 12:02:08,787 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:02:08,787 INFO L195 NwaCegarLoop]: trace histogram [49, 1, 1, 1, 1] [2022-12-14 12:02:08,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 12:02:08,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:02:08,989 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:02:08,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:02:08,990 INFO L85 PathProgramCache]: Analyzing trace with hash -137508600, now seen corresponding path program 4 times [2022-12-14 12:02:08,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:02:08,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798202605] [2022-12-14 12:02:08,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:02:08,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:02:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:02:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:02:13,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:02:13,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798202605] [2022-12-14 12:02:13,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798202605] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:02:13,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75593785] [2022-12-14 12:02:13,301 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 12:02:13,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:02:13,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:02:13,302 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:02:13,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93c1ea12-df40-45c8-a03b-4bcdd0cf7a08/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process