./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c5f43b3e9ff1d4598a5a525fe9e716f863331c4c517b4b8adb0491943243286 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:45:53,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:45:53,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:45:53,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:45:53,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:45:53,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:45:53,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:45:53,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:45:53,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:45:53,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:45:53,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:45:53,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:45:53,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:45:53,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:45:53,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:45:53,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:45:53,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:45:53,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:45:53,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:45:53,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:45:53,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:45:53,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:45:53,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:45:53,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:45:53,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:45:53,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:45:53,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:45:53,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:45:53,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:45:53,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:45:53,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:45:53,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:45:53,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:45:53,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:45:53,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:45:53,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:45:53,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:45:53,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:45:53,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:45:53,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:45:53,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:45:53,865 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:45:53,930 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:45:53,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:45:53,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:45:53,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:45:53,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:45:53,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:45:53,933 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:45:53,933 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:45:53,933 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:45:53,933 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:45:53,934 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:45:53,935 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:45:53,935 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:45:53,935 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:45:53,935 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:45:53,935 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:45:53,936 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:45:53,936 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:45:53,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:45:53,937 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:45:53,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:45:53,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:45:53,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:45:53,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:45:53,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:45:53,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:45:53,939 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:45:53,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:45:53,939 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:45:53,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:45:53,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:45:53,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:45:53,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:45:53,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:45:53,940 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:45:53,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:45:53,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:45:53,942 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:45:53,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:45:53,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:45:53,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:45:53,944 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_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c5f43b3e9ff1d4598a5a525fe9e716f863331c4c517b4b8adb0491943243286 [2022-11-20 20:45:54,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:45:54,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:45:54,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:45:54,292 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:45:54,292 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:45:54,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c [2022-11-20 20:45:57,497 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:45:57,733 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:45:57,734 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c [2022-11-20 20:45:57,742 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/data/3e47a6c2c/cc26b29ba2db4076921bfaa95453c62c/FLAG44110a160 [2022-11-20 20:45:57,764 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/data/3e47a6c2c/cc26b29ba2db4076921bfaa95453c62c [2022-11-20 20:45:57,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:45:57,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:45:57,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:45:57,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:45:57,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:45:57,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:45:57" (1/1) ... [2022-11-20 20:45:57,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@598c1fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:45:57, skipping insertion in model container [2022-11-20 20:45:57,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:45:57" (1/1) ... [2022-11-20 20:45:57,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:45:57,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:45:58,039 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_2bd91392-5496-4c1c-a5c6-6901299958b1/sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c[319,332] [2022-11-20 20:45:58,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:45:58,075 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:45:58,089 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_2bd91392-5496-4c1c-a5c6-6901299958b1/sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c[319,332] [2022-11-20 20:45:58,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:45:58,110 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:45:58,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:45:58 WrapperNode [2022-11-20 20:45:58,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:45:58,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:45:58,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:45:58,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:45:58,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:45:58" (1/1) ... [2022-11-20 20:45:58,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:45:58" (1/1) ... [2022-11-20 20:45:58,153 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2022-11-20 20:45:58,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:45:58,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:45:58,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:45:58,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:45:58,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:45:58" (1/1) ... [2022-11-20 20:45:58,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:45:58" (1/1) ... [2022-11-20 20:45:58,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:45:58" (1/1) ... [2022-11-20 20:45:58,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:45:58" (1/1) ... [2022-11-20 20:45:58,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:45:58" (1/1) ... [2022-11-20 20:45:58,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:45:58" (1/1) ... [2022-11-20 20:45:58,187 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:45:58" (1/1) ... [2022-11-20 20:45:58,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:45:58" (1/1) ... [2022-11-20 20:45:58,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:45:58,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:45:58,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:45:58,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:45:58,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:45:58" (1/1) ... [2022-11-20 20:45:58,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:45:58,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:45:58,236 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:45:58,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:45:58,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:45:58,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:45:58,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:45:58,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:45:58,382 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:45:58,385 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:45:58,579 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:45:58,639 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:45:58,639 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:45:58,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:45:58 BoogieIcfgContainer [2022-11-20 20:45:58,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:45:58,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:45:58,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:45:58,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:45:58,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:45:57" (1/3) ... [2022-11-20 20:45:58,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0f1e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:45:58, skipping insertion in model container [2022-11-20 20:45:58,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:45:58" (2/3) ... [2022-11-20 20:45:58,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d0f1e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:45:58, skipping insertion in model container [2022-11-20 20:45:58,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:45:58" (3/3) ... [2022-11-20 20:45:58,654 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_10.c [2022-11-20 20:45:58,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:45:58,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:45:58,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:45:58,757 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;@28f26470, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:45:58,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:45:58,762 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) [2022-11-20 20:45:58,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 20:45:58,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:45:58,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 20:45:58,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:45:58,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:45:58,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2065030, now seen corresponding path program 1 times [2022-11-20 20:45:58,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:45:58,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554035635] [2022-11-20 20:45:58,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:45:58,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:45:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:45:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:45:59,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:45:59,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554035635] [2022-11-20 20:45:59,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554035635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:45:59,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:45:59,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:45:59,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205895624] [2022-11-20 20:45:59,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:45:59,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:45:59,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:45:59,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:45:59,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:45:59,175 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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) [2022-11-20 20:45:59,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:45:59,245 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2022-11-20 20:45:59,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:45:59,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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 [2022-11-20 20:45:59,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:45:59,257 INFO L225 Difference]: With dead ends: 13 [2022-11-20 20:45:59,258 INFO L226 Difference]: Without dead ends: 6 [2022-11-20 20:45:59,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:45:59,271 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:45:59,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:45:59,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-11-20 20:45:59,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-11-20 20:45:59,316 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) [2022-11-20 20:45:59,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2022-11-20 20:45:59,318 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2022-11-20 20:45:59,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:45:59,318 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-11-20 20:45:59,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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) [2022-11-20 20:45:59,319 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-11-20 20:45:59,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 20:45:59,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:45:59,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 20:45:59,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:45:59,321 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:45:59,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:45:59,322 INFO L85 PathProgramCache]: Analyzing trace with hash 64119683, now seen corresponding path program 1 times [2022-11-20 20:45:59,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:45:59,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640641431] [2022-11-20 20:45:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:45:59,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:45:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:45:59,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:45:59,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:45:59,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640641431] [2022-11-20 20:45:59,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640641431] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:45:59,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698438581] [2022-11-20 20:45:59,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:45:59,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:45:59,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:45:59,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:45:59,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:45:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:45:59,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 20:45:59,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:45:59,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:45:59,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:45:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:45:59,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698438581] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:45:59,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [6007458] [2022-11-20 20:45:59,967 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-20 20:45:59,968 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:45:59,972 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:45:59,979 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:45:59,980 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:46:00,522 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:46:00,661 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '69#(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___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 5000000 |ULTIMATE.start_main_~z~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (ite (= (mod |ULTIMATE.start_main_~x~0#1| 4294967296) (mod |ULTIMATE.start_main_~z~0#1| 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|))' at error location [2022-11-20 20:46:00,662 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:46:00,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:46:00,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-20 20:46:00,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005218005] [2022-11-20 20:46:00,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:46:00,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:46:00,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:46:00,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:46:00,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:46:00,674 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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) [2022-11-20 20:46:00,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:46:00,790 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2022-11-20 20:46:00,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:46:00,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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) Word has length 5 [2022-11-20 20:46:00,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:46:00,791 INFO L225 Difference]: With dead ends: 12 [2022-11-20 20:46:00,792 INFO L226 Difference]: Without dead ends: 9 [2022-11-20 20:46:00,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:46:00,794 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:46:00,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:46:00,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-20 20:46:00,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-20 20:46:00,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:46:00,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-20 20:46:00,799 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-20 20:46:00,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:46:00,800 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-20 20:46:00,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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) [2022-11-20 20:46:00,800 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-20 20:46:00,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 20:46:00,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:46:00,801 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-11-20 20:46:00,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:46:01,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:46:01,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:46:01,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:46:01,009 INFO L85 PathProgramCache]: Analyzing trace with hash -967943738, now seen corresponding path program 2 times [2022-11-20 20:46:01,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:46:01,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391432976] [2022-11-20 20:46:01,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:46:01,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:46:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:46:01,443 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:01,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:46:01,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391432976] [2022-11-20 20:46:01,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391432976] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:46:01,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266401003] [2022-11-20 20:46:01,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:46:01,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:46:01,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:46:01,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:46:01,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:46:01,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 20:46:01,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:46:01,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 20:46:01,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:46:01,669 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:01,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:46:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:01,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266401003] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:46:01,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [433035177] [2022-11-20 20:46:01,796 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-20 20:46:01,796 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:46:01,796 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:46:01,796 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:46:01,797 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:46:01,902 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:46:02,203 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '163#(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___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 5000000 |ULTIMATE.start_main_~z~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (ite (= (mod |ULTIMATE.start_main_~x~0#1| 4294967296) (mod |ULTIMATE.start_main_~z~0#1| 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|))' at error location [2022-11-20 20:46:02,203 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:46:02,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:46:02,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-11-20 20:46:02,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592189940] [2022-11-20 20:46:02,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:46:02,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 20:46:02,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:46:02,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 20:46:02,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-11-20 20:46:02,206 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:46:02,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:46:02,870 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-11-20 20:46:02,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 20:46:02,873 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 20:46:02,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:46:02,874 INFO L225 Difference]: With dead ends: 18 [2022-11-20 20:46:02,874 INFO L226 Difference]: Without dead ends: 15 [2022-11-20 20:46:02,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2022-11-20 20:46:02,875 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:46:02,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:46:02,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-20 20:46:02,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-20 20:46:02,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:46:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-20 20:46:02,886 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-20 20:46:02,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:46:02,888 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-20 20:46:02,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:46:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-20 20:46:02,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 20:46:02,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:46:02,891 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2022-11-20 20:46:02,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:46:03,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:46:03,098 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:46:03,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:46:03,099 INFO L85 PathProgramCache]: Analyzing trace with hash -313388890, now seen corresponding path program 3 times [2022-11-20 20:46:03,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:46:03,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908989265] [2022-11-20 20:46:03,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:46:03,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:46:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:46:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:03,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:46:03,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908989265] [2022-11-20 20:46:03,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908989265] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:46:03,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515936088] [2022-11-20 20:46:03,634 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 20:46:03,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:46:03,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:46:03,635 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:46:03,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:46:03,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 20:46:03,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:46:03,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 20:46:03,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:46:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:04,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:46:04,579 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:04,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515936088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:46:04,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [382080749] [2022-11-20 20:46:04,582 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-20 20:46:04,582 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:46:04,583 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:46:04,583 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:46:04,583 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:46:04,693 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:46:05,082 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '341#(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___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 5000000 |ULTIMATE.start_main_~z~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (ite (= (mod |ULTIMATE.start_main_~x~0#1| 4294967296) (mod |ULTIMATE.start_main_~z~0#1| 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|))' at error location [2022-11-20 20:46:05,082 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:46:05,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:46:05,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2022-11-20 20:46:05,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602298630] [2022-11-20 20:46:05,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:46:05,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 20:46:05,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:46:05,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 20:46:05,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=998, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 20:46:05,085 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 34 states, 34 states have (on average 1.088235294117647) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:46:27,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:46:27,431 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2022-11-20 20:46:27,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 20:46:27,433 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.088235294117647) internal successors, (37), 33 states have internal predecessors, (37), 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 14 [2022-11-20 20:46:27,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:46:27,434 INFO L225 Difference]: With dead ends: 30 [2022-11-20 20:46:27,434 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 20:46:27,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=674, Invalid=1488, Unknown=0, NotChecked=0, Total=2162 [2022-11-20 20:46:27,436 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:46:27,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 20:46:27,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 20:46:27,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-20 20:46:27,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:46:27,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-11-20 20:46:27,460 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2022-11-20 20:46:27,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:46:27,460 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-11-20 20:46:27,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.088235294117647) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:46:27,461 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-11-20 20:46:27,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 20:46:27,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:46:27,462 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1] [2022-11-20 20:46:27,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:46:27,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:46:27,669 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:46:27,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:46:27,670 INFO L85 PathProgramCache]: Analyzing trace with hash 292652646, now seen corresponding path program 4 times [2022-11-20 20:46:27,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:46:27,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948383494] [2022-11-20 20:46:27,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:46:27,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:46:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:46:29,107 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:29,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:46:29,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948383494] [2022-11-20 20:46:29,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948383494] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:46:29,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515064246] [2022-11-20 20:46:29,108 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 20:46:29,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:46:29,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:46:29,111 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:46:29,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bd91392-5496-4c1c-a5c6-6901299958b1/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:46:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:46:29,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-20 20:46:29,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:46:30,422 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:30,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:46:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:46:33,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515064246] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:46:33,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1525391459] [2022-11-20 20:46:33,132 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-20 20:46:33,132 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:46:33,132 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:46:33,133 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:46:33,133 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:46:33,273 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:46:33,862 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '687#(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___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 5000000 |ULTIMATE.start_main_~z~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= (ite (= (mod |ULTIMATE.start_main_~x~0#1| 4294967296) (mod |ULTIMATE.start_main_~z~0#1| 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|))' at error location [2022-11-20 20:46:33,863 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:46:33,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:46:33,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 69 [2022-11-20 20:46:33,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810276093] [2022-11-20 20:46:33,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:46:33,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-20 20:46:33,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:46:33,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-20 20:46:33,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1290, Invalid=3966, Unknown=0, NotChecked=0, Total=5256 [2022-11-20 20:46:33,867 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 70 states, 70 states have (on average 1.042857142857143) internal successors, (73), 69 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:46:36,413 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse14 (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296))) (let ((.cse4 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 3) 4294967296) .cse14)) (.cse5 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) .cse14)) (.cse9 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) .cse14)) (.cse2 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) .cse14)) (.cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 9) 4294967296) .cse14)) (.cse13 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 21) 4294967296) .cse14)) (.cse7 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) .cse14)) (.cse17 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) .cse14)) (.cse16 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) .cse14)) (.cse6 (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) .cse14)) (.cse1 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) .cse14)) (.cse15 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296) .cse14)) (.cse3 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) .cse14)) (.cse8 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296) .cse14)) (.cse18 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) .cse14)) (.cse20 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) .cse14)) (.cse11 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) .cse14)) (.cse21 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 5) 4294967296) .cse14)) (.cse10 (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) .cse14)) (.cse12 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 1) 4294967296) .cse14)) (.cse19 (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) .cse14)) (.cse22 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) .cse14))) (and (or .cse0 (not .cse1)) (or (not .cse2) .cse3) (or .cse4 (not .cse5)) (or (not .cse6) .cse7) (or .cse8 (not .cse9)) .cse10 (or (not .cse4) .cse11) (or .cse5 (not .cse12)) (or (not .cse13) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 22) 4294967296) .cse14)) (or .cse9 (not .cse15)) (or .cse2 (not .cse16)) (or (not .cse0) .cse17) (or .cse13 (not .cse7)) (or (not .cse17) .cse16) (or (not .cse18) .cse6) (or (not .cse19) .cse1) (or .cse15 (not .cse3)) (or (not .cse8) .cse20) (or .cse18 (not .cse20)) (or .cse21 (not .cse11)) (or (not .cse21) .cse22) (or (not .cse10) .cse12) (or .cse19 (not .cse22))))) is different from false [2022-11-20 20:46:38,426 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse16 (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296))) (let ((.cse4 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 3) 4294967296) .cse16)) (.cse5 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) .cse16)) (.cse9 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) .cse16)) (.cse2 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) .cse16)) (.cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 9) 4294967296) .cse16)) (.cse7 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) .cse16)) (.cse15 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) .cse16)) (.cse14 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) .cse16)) (.cse6 (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) .cse16)) (.cse1 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) .cse16)) (.cse13 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296) .cse16)) (.cse3 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) .cse16)) (.cse8 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296) .cse16)) (.cse17 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) .cse16)) (.cse19 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) .cse16)) (.cse11 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) .cse16)) (.cse20 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 5) 4294967296) .cse16)) (.cse10 (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) .cse16)) (.cse12 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 1) 4294967296) .cse16)) (.cse18 (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) .cse16)) (.cse21 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) .cse16))) (and (or .cse0 (not .cse1)) (or (not .cse2) .cse3) (or .cse4 (not .cse5)) (or (not .cse6) .cse7) (or .cse8 (not .cse9)) .cse10 (or (not .cse4) .cse11) (or .cse5 (not .cse12)) (or .cse9 (not .cse13)) (or .cse2 (not .cse14)) (or (not .cse0) .cse15) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 21) 4294967296) .cse16) (not .cse7)) (or (not .cse15) .cse14) (or (not .cse17) .cse6) (or (not .cse18) .cse1) (or .cse13 (not .cse3)) (or (not .cse8) .cse19) (or .cse17 (not .cse19)) (or .cse20 (not .cse11)) (or (not .cse20) .cse21) (or (not .cse10) .cse12) (or .cse18 (not .cse21))))) is different from false [2022-11-20 20:50:33,710 WARN L233 SmtUtils]: Spent 3.06m on a formula simplification. DAG size of input: 127 DAG size of output: 87 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:50:35,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:53:43,218 WARN L233 SmtUtils]: Spent 2.58m on a formula simplification. DAG size of input: 121 DAG size of output: 83 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:53:46,148 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse16 (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296))) (let ((.cse4 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 3) 4294967296) .cse16)) (.cse5 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) .cse16)) (.cse7 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) .cse16)) (.cse2 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) .cse16)) (.cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 9) 4294967296) .cse16)) (.cse13 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) .cse16)) (.cse12 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) .cse16)) (.cse1 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) .cse16)) (.cse11 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296) .cse16)) (.cse3 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) .cse16)) (.cse6 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296) .cse16)) (.cse15 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) .cse16)) (.cse9 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) .cse16)) (.cse17 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 5) 4294967296) .cse16)) (.cse8 (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) .cse16)) (.cse10 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 1) 4294967296) .cse16)) (.cse14 (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) .cse16)) (.cse18 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) .cse16))) (and (or .cse0 (not .cse1)) (or (not .cse2) .cse3) (or .cse4 (not .cse5)) (or .cse6 (not .cse7)) .cse8 (or (not .cse4) .cse9) (or .cse5 (not .cse10)) (or .cse7 (not .cse11)) (or .cse2 (not .cse12)) (or (not .cse0) .cse13) (or (not .cse13) .cse12) (or (not .cse14) .cse1) (or .cse11 (not .cse3)) (or (not .cse6) .cse15) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) .cse16) (not .cse15)) (or .cse17 (not .cse9)) (or (not .cse17) .cse18) (or (not .cse8) .cse10) (or .cse14 (not .cse18))))) is different from false [2022-11-20 20:56:08,089 WARN L233 SmtUtils]: Spent 1.82m on a formula simplification. DAG size of input: 109 DAG size of output: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:56:10,767 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296))) (let ((.cse4 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 3) 4294967296) .cse6)) (.cse5 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) .cse6)) (.cse7 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) .cse6)) (.cse2 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) .cse6)) (.cse0 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 9) 4294967296) .cse6)) (.cse13 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) .cse6)) (.cse12 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) .cse6)) (.cse1 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) .cse6)) (.cse11 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296) .cse6)) (.cse3 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) .cse6)) (.cse9 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) .cse6)) (.cse15 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 5) 4294967296) .cse6)) (.cse8 (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) .cse6)) (.cse10 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 1) 4294967296) .cse6)) (.cse14 (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) .cse6)) (.cse16 (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) .cse6))) (and (or .cse0 (not .cse1)) (or (not .cse2) .cse3) (or .cse4 (not .cse5)) (or (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296) .cse6) (not .cse7)) .cse8 (or (not .cse4) .cse9) (or .cse5 (not .cse10)) (or .cse7 (not .cse11)) (or .cse2 (not .cse12)) (or (not .cse0) .cse13) (or (not .cse13) .cse12) (or (not .cse14) .cse1) (or .cse11 (not .cse3)) (or .cse15 (not .cse9)) (or (not .cse15) .cse16) (or (not .cse8) .cse10) (or .cse14 (not .cse16))))) is different from false [2022-11-20 20:57:51,160 WARN L233 SmtUtils]: Spent 1.26m on a formula simplification. DAG size of input: 97 DAG size of output: 67 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:57:52,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:59:12,436 WARN L233 SmtUtils]: Spent 1.04m on a formula simplification. DAG size of input: 91 DAG size of output: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:00:14,808 WARN L233 SmtUtils]: Spent 45.56s on a formula simplification. DAG size of input: 85 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:01:03,670 WARN L233 SmtUtils]: Spent 36.21s on a formula simplification. DAG size of input: 79 DAG size of output: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)