./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/nested_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/nested_1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8828f6ff39cd2bcfba4fe3d04f0119d60137bcad91eabef2e2b840cbd0802b98 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:21:11,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:21:11,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:21:12,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:21:12,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:21:12,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:21:12,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:21:12,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:21:12,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:21:12,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:21:12,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:21:12,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:21:12,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:21:12,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:21:12,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:21:12,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:21:12,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:21:12,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:21:12,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:21:12,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:21:12,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:21:12,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:21:12,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:21:12,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:21:12,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:21:12,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:21:12,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:21:12,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:21:12,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:21:12,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:21:12,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:21:12,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:21:12,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:21:12,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:21:12,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:21:12,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:21:12,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:21:12,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:21:12,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:21:12,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:21:12,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:21:12,076 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:21:12,108 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:21:12,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:21:12,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:21:12,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:21:12,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:21:12,114 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:21:12,115 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:21:12,115 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:21:12,115 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:21:12,115 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:21:12,116 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:21:12,117 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:21:12,117 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:21:12,117 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:21:12,117 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:21:12,117 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:21:12,118 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:21:12,118 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:21:12,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:21:12,119 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:21:12,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:21:12,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:21:12,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:21:12,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:21:12,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:21:12,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:21:12,120 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:21:12,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:21:12,121 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:21:12,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:21:12,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:21:12,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:21:12,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:21:12,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:21:12,122 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:21:12,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:21:12,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:21:12,123 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:21:12,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:21:12,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:21:12,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:21:12,124 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_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8828f6ff39cd2bcfba4fe3d04f0119d60137bcad91eabef2e2b840cbd0802b98 [2022-11-25 23:21:12,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:21:12,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:21:12,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:21:12,433 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:21:12,434 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:21:12,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/loop-acceleration/nested_1-2.c [2022-11-25 23:21:15,547 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:21:15,821 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:21:15,822 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/sv-benchmarks/c/loop-acceleration/nested_1-2.c [2022-11-25 23:21:15,830 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/data/86bc8b3c2/def77d9945064b4eb0f8f68b802bff78/FLAGe4501c3ff [2022-11-25 23:21:15,850 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/data/86bc8b3c2/def77d9945064b4eb0f8f68b802bff78 [2022-11-25 23:21:15,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:21:15,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:21:15,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:21:15,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:21:15,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:21:15,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:21:15" (1/1) ... [2022-11-25 23:21:15,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6acfc6e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:15, skipping insertion in model container [2022-11-25 23:21:15,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:21:15" (1/1) ... [2022-11-25 23:21:15,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:21:15,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:21:16,060 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_1dcc3602-b42a-4252-9533-7ab1b957c8be/sv-benchmarks/c/loop-acceleration/nested_1-2.c[322,335] [2022-11-25 23:21:16,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:21:16,086 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:21:16,098 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_1dcc3602-b42a-4252-9533-7ab1b957c8be/sv-benchmarks/c/loop-acceleration/nested_1-2.c[322,335] [2022-11-25 23:21:16,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:21:16,119 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:21:16,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16 WrapperNode [2022-11-25 23:21:16,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:21:16,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:21:16,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:21:16,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:21:16,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,153 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-11-25 23:21:16,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:21:16,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:21:16,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:21:16,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:21:16,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,172 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:21:16,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:21:16,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:21:16,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:21:16,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (1/1) ... [2022-11-25 23:21:16,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:21:16,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:21:16,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:21:16,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:21:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:21:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:21:16,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:21:16,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:21:16,320 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:21:16,322 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:21:16,431 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:21:16,460 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:21:16,460 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 23:21:16,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:21:16 BoogieIcfgContainer [2022-11-25 23:21:16,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:21:16,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:21:16,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:21:16,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:21:16,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:21:15" (1/3) ... [2022-11-25 23:21:16,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15327e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:21:16, skipping insertion in model container [2022-11-25 23:21:16,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:16" (2/3) ... [2022-11-25 23:21:16,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15327e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:21:16, skipping insertion in model container [2022-11-25 23:21:16,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:21:16" (3/3) ... [2022-11-25 23:21:16,472 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_1-2.c [2022-11-25 23:21:16,495 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:21:16,495 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:21:16,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:21:16,561 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;@1e35b202, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:21:16,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:21:16,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 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) [2022-11-25 23:21:16,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:21:16,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:21:16,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:21:16,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:21:16,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:21:16,576 INFO L85 PathProgramCache]: Analyzing trace with hash 2252617, now seen corresponding path program 1 times [2022-11-25 23:21:16,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:21:16,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409916899] [2022-11-25 23:21:16,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:16,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:21:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:21:16,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:16,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:21:16,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409916899] [2022-11-25 23:21:16,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409916899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:21:16,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:21:16,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:21:16,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994470843] [2022-11-25 23:21:16,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:21:16,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:21:16,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:21:16,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:21:16,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:21:16,875 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 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) 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) [2022-11-25 23:21:16,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:21:16,912 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2022-11-25 23:21:16,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:21:16,915 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 [2022-11-25 23:21:16,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:21:16,922 INFO L225 Difference]: With dead ends: 15 [2022-11-25 23:21:16,923 INFO L226 Difference]: Without dead ends: 8 [2022-11-25 23:21:16,925 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 [2022-11-25 23:21:16,929 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:21:16,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:21:16,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-25 23:21:16,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2022-11-25 23:21:16,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.3333333333333333) 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) [2022-11-25 23:21:16,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2022-11-25 23:21:16,961 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 4 [2022-11-25 23:21:16,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:21:16,961 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-11-25 23:21:16,962 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) [2022-11-25 23:21:16,962 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2022-11-25 23:21:16,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 23:21:16,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:21:16,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 23:21:16,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:21:16,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:21:16,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:21:16,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2130164165, now seen corresponding path program 1 times [2022-11-25 23:21:16,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:21:16,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827070222] [2022-11-25 23:21:16,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:16,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:21:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:21:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:17,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:21:17,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827070222] [2022-11-25 23:21:17,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827070222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:21:17,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:21:17,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:21:17,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819885906] [2022-11-25 23:21:17,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:21:17,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:21:17,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:21:17,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:21:17,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:21:17,092 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:17,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:21:17,129 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2022-11-25 23:21:17,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:21:17,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-25 23:21:17,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:21:17,131 INFO L225 Difference]: With dead ends: 13 [2022-11-25 23:21:17,132 INFO L226 Difference]: Without dead ends: 8 [2022-11-25 23:21:17,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:21:17,134 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:21:17,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:21:17,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-25 23:21:17,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-25 23:21:17,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2022-11-25 23:21:17,139 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2022-11-25 23:21:17,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:21:17,139 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-11-25 23:21:17,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:17,140 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2022-11-25 23:21:17,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 23:21:17,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:21:17,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:21:17,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:21:17,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:21:17,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:21:17,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1585602295, now seen corresponding path program 1 times [2022-11-25 23:21:17,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:21:17,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143553656] [2022-11-25 23:21:17,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:17,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:21:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:21:17,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:17,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:21:17,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143553656] [2022-11-25 23:21:17,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143553656] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:21:17,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255091606] [2022-11-25 23:21:17,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:17,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:21:17,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:21:17,353 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:21:17,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:21:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:21:17,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:21:17,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:21:17,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:17,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:21:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:17,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255091606] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:21:17,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1385562456] [2022-11-25 23:21:17,522 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-25 23:21:17,522 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:21:17,526 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:21:17,531 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:21:17,532 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:21:18,119 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:21:18,234 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '122#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:21:18,234 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:21:18,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:21:18,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-25 23:21:18,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100740325] [2022-11-25 23:21:18,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:21:18,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:21:18,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:21:18,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:21:18,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:21:18,243 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:18,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:21:18,305 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2022-11-25 23:21:18,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:21:18,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 7 [2022-11-25 23:21:18,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:21:18,308 INFO L225 Difference]: With dead ends: 17 [2022-11-25 23:21:18,308 INFO L226 Difference]: Without dead ends: 11 [2022-11-25 23:21:18,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-25 23:21:18,314 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:21:18,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:21:18,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-25 23:21:18,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-25 23:21:18,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-25 23:21:18,323 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2022-11-25 23:21:18,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:21:18,323 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-25 23:21:18,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:21:18,325 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-25 23:21:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 23:21:18,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:21:18,326 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-25 23:21:18,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 23:21:18,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:21:18,532 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:21:18,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:21:18,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1594914373, now seen corresponding path program 2 times [2022-11-25 23:21:18,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:21:18,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299243232] [2022-11-25 23:21:18,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:18,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:21:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:21:18,728 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:18,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:21:18,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299243232] [2022-11-25 23:21:18,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299243232] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:21:18,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018306570] [2022-11-25 23:21:18,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:21:18,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:21:18,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:21:18,737 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:21:18,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:21:18,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 23:21:18,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:21:18,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:21:18,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:21:18,832 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:21:18,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:21:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:21:18,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018306570] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:21:18,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1036846945] [2022-11-25 23:21:18,882 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-25 23:21:18,882 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:21:18,882 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:21:18,882 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:21:18,883 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:21:19,133 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:21:19,454 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '237#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:21:19,454 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:21:19,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:21:19,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3, 3] total 11 [2022-11-25 23:21:19,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977649857] [2022-11-25 23:21:19,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:21:19,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 23:21:19,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:21:19,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 23:21:19,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-25 23:21:19,457 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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) [2022-11-25 23:21:19,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:21:19,923 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2022-11-25 23:21:19,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-25 23:21:19,924 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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 10 [2022-11-25 23:21:19,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:21:19,925 INFO L225 Difference]: With dead ends: 42 [2022-11-25 23:21:19,925 INFO L226 Difference]: Without dead ends: 33 [2022-11-25 23:21:19,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=239, Invalid=951, Unknown=0, NotChecked=0, Total=1190 [2022-11-25 23:21:19,926 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 21 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:21:19,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 20 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:21:19,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-25 23:21:19,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-25 23:21:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.15625) internal successors, (37), 32 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) [2022-11-25 23:21:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-11-25 23:21:19,947 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2022-11-25 23:21:19,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:21:19,947 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-11-25 23:21:19,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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) [2022-11-25 23:21:19,948 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-11-25 23:21:19,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-25 23:21:19,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:21:19,949 INFO L195 NwaCegarLoop]: trace histogram [20, 4, 4, 1, 1, 1, 1] [2022-11-25 23:21:19,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:21:20,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:21:20,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:21:20,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:21:20,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1777225673, now seen corresponding path program 3 times [2022-11-25 23:21:20,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:21:20,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370917680] [2022-11-25 23:21:20,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:20,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:21:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:21:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 112 proven. 15 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-25 23:21:20,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:21:20,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370917680] [2022-11-25 23:21:20,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370917680] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:21:20,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551299363] [2022-11-25 23:21:20,514 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:21:20,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:21:20,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:21:20,516 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:21:20,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:21:20,594 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:21:20,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:21:20,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 23:21:20,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:21:20,816 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 241 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 23:21:20,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:21:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 5 proven. 236 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 23:21:21,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551299363] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:21:21,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1090219892] [2022-11-25 23:21:21,197 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-25 23:21:21,197 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:21:21,197 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:21:21,197 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:21:21,197 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:21:21,372 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:21:22,392 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '636#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:21:22,392 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:21:22,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:21:22,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2022-11-25 23:21:22,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218478808] [2022-11-25 23:21:22,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:21:22,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-25 23:21:22,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:21:22,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-25 23:21:22,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2022-11-25 23:21:22,395 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 states have internal predecessors, (50), 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) [2022-11-25 23:21:27,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:21:27,820 INFO L93 Difference]: Finished difference Result 110 states and 139 transitions. [2022-11-25 23:21:27,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-11-25 23:21:27,821 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 states have internal predecessors, (50), 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 32 [2022-11-25 23:21:27,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:21:27,822 INFO L225 Difference]: With dead ends: 110 [2022-11-25 23:21:27,822 INFO L226 Difference]: Without dead ends: 85 [2022-11-25 23:21:27,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 49 SyntacticMatches, 24 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3194 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1662, Invalid=7080, Unknown=0, NotChecked=0, Total=8742 [2022-11-25 23:21:27,826 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 65 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:21:27,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 24 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:21:27,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-25 23:21:27,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-11-25 23:21:27,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.130952380952381) internal successors, (95), 84 states have internal predecessors, (95), 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) [2022-11-25 23:21:27,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2022-11-25 23:21:27,848 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 32 [2022-11-25 23:21:27,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:21:27,848 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2022-11-25 23:21:27,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 states have internal predecessors, (50), 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) [2022-11-25 23:21:27,849 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2022-11-25 23:21:27,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-25 23:21:27,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:21:27,851 INFO L195 NwaCegarLoop]: trace histogram [60, 10, 10, 1, 1, 1, 1] [2022-11-25 23:21:27,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 23:21:28,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:21:28,057 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:21:28,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:21:28,058 INFO L85 PathProgramCache]: Analyzing trace with hash 781465505, now seen corresponding path program 4 times [2022-11-25 23:21:28,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:21:28,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620879324] [2022-11-25 23:21:28,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:28,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:21:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:21:28,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2470 backedges. 451 proven. 21 refuted. 0 times theorem prover too weak. 1998 trivial. 0 not checked. [2022-11-25 23:21:28,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:21:28,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620879324] [2022-11-25 23:21:28,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620879324] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:21:28,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776609271] [2022-11-25 23:21:28,559 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 23:21:28,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:21:28,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:21:28,564 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:21:28,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:21:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:21:28,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-25 23:21:28,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:21:28,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2470 backedges. 451 proven. 21 refuted. 0 times theorem prover too weak. 1998 trivial. 0 not checked. [2022-11-25 23:21:28,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:21:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2470 backedges. 1210 proven. 771 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2022-11-25 23:21:29,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776609271] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:21:29,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1563005256] [2022-11-25 23:21:29,365 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-25 23:21:29,365 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:21:29,365 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:21:29,365 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:21:29,366 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:21:29,529 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:21:31,925 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1672#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:21:31,926 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:21:31,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:21:31,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 15] total 30 [2022-11-25 23:21:31,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637356398] [2022-11-25 23:21:31,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:21:31,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-25 23:21:31,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:21:31,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-25 23:21:31,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=876, Unknown=0, NotChecked=0, Total=1056 [2022-11-25 23:21:31,928 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 30 states, 30 states have (on average 1.6) internal successors, (48), 30 states have internal predecessors, (48), 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) [2022-11-25 23:21:43,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:21:43,215 INFO L93 Difference]: Finished difference Result 606 states and 824 transitions. [2022-11-25 23:21:43,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-11-25 23:21:43,216 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6) internal successors, (48), 30 states have internal predecessors, (48), 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 84 [2022-11-25 23:21:43,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:21:43,221 INFO L225 Difference]: With dead ends: 606 [2022-11-25 23:21:43,222 INFO L226 Difference]: Without dead ends: 332 [2022-11-25 23:21:43,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 158 SyntacticMatches, 70 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3672 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=1693, Invalid=7619, Unknown=0, NotChecked=0, Total=9312 [2022-11-25 23:21:43,227 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 65 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:21:43,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 34 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-25 23:21:43,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-25 23:21:43,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 266. [2022-11-25 23:21:43,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.1849056603773584) internal successors, (314), 265 states have internal predecessors, (314), 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) [2022-11-25 23:21:43,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 314 transitions. [2022-11-25 23:21:43,320 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 314 transitions. Word has length 84 [2022-11-25 23:21:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:21:43,321 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 314 transitions. [2022-11-25 23:21:43,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6) internal successors, (48), 30 states have internal predecessors, (48), 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) [2022-11-25 23:21:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 314 transitions. [2022-11-25 23:21:43,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-25 23:21:43,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:21:43,325 INFO L195 NwaCegarLoop]: trace histogram [82, 10, 10, 1, 1, 1, 1] [2022-11-25 23:21:43,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:21:43,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 23:21:43,532 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:21:43,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:21:43,533 INFO L85 PathProgramCache]: Analyzing trace with hash -409663111, now seen corresponding path program 5 times [2022-11-25 23:21:43,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:21:43,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983327737] [2022-11-25 23:21:43,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:43,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:21:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:21:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4241 backedges. 2462 proven. 28 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-25 23:21:44,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:21:44,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983327737] [2022-11-25 23:21:44,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983327737] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:21:44,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004023171] [2022-11-25 23:21:44,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:21:44,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:21:44,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:21:44,076 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:21:44,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:21:44,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-11-25 23:21:44,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:21:44,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-25 23:21:44,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:21:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4241 backedges. 618 proven. 720 refuted. 0 times theorem prover too weak. 2903 trivial. 0 not checked. [2022-11-25 23:21:44,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:21:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4241 backedges. 682 proven. 28 refuted. 0 times theorem prover too weak. 3531 trivial. 0 not checked. [2022-11-25 23:21:44,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004023171] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:21:44,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1014359145] [2022-11-25 23:21:44,639 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-25 23:21:44,639 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:21:44,639 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:21:44,639 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:21:44,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:21:44,821 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:21:44,984 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4179#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:21:44,984 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:21:44,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:21:44,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-11-25 23:21:44,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094572516] [2022-11-25 23:21:44,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:21:44,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 23:21:44,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:21:44,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 23:21:44,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-25 23:21:44,987 INFO L87 Difference]: Start difference. First operand 266 states and 314 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 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) [2022-11-25 23:21:45,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:21:45,117 INFO L93 Difference]: Finished difference Result 269 states and 316 transitions. [2022-11-25 23:21:45,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 23:21:45,118 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 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 106 [2022-11-25 23:21:45,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:21:45,121 INFO L225 Difference]: With dead ends: 269 [2022-11-25 23:21:45,121 INFO L226 Difference]: Without dead ends: 125 [2022-11-25 23:21:45,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 304 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2022-11-25 23:21:45,126 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:21:45,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:21:45,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-25 23:21:45,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-11-25 23:21:45,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.0887096774193548) internal successors, (135), 124 states have internal predecessors, (135), 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) [2022-11-25 23:21:45,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 135 transitions. [2022-11-25 23:21:45,157 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 135 transitions. Word has length 106 [2022-11-25 23:21:45,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:21:45,157 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 135 transitions. [2022-11-25 23:21:45,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 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) [2022-11-25 23:21:45,158 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 135 transitions. [2022-11-25 23:21:45,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-25 23:21:45,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:21:45,160 INFO L195 NwaCegarLoop]: trace histogram [100, 10, 10, 1, 1, 1, 1] [2022-11-25 23:21:45,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-25 23:21:45,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:21:45,366 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:21:45,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:21:45,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1113288353, now seen corresponding path program 6 times [2022-11-25 23:21:45,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:21:45,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729935638] [2022-11-25 23:21:45,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:45,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:21:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:21:46,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 0 proven. 5500 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-25 23:21:46,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:21:46,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729935638] [2022-11-25 23:21:46,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729935638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:21:46,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810801068] [2022-11-25 23:21:46,016 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:21:46,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:21:46,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:21:46,018 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:21:46,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 23:21:46,157 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:21:46,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:21:46,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-25 23:21:46,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:21:46,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 0 proven. 5555 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-11-25 23:21:46,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:21:47,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 0 proven. 5500 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-25 23:21:47,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810801068] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:21:47,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [613002051] [2022-11-25 23:21:47,426 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-25 23:21:47,426 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:21:47,426 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:21:47,426 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:21:47,427 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:21:47,575 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:21:50,955 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5734#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:21:50,956 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:21:50,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:21:50,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 22, 12] total 34 [2022-11-25 23:21:50,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229893767] [2022-11-25 23:21:50,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:21:50,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-25 23:21:50,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:21:50,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-25 23:21:50,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1057, Unknown=0, NotChecked=0, Total=1406 [2022-11-25 23:21:50,959 INFO L87 Difference]: Start difference. First operand 125 states and 135 transitions. Second operand has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 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) [2022-11-25 23:21:58,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:21:58,230 INFO L93 Difference]: Finished difference Result 272 states and 305 transitions. [2022-11-25 23:21:58,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-25 23:21:58,230 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 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 124 [2022-11-25 23:21:58,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:21:58,232 INFO L225 Difference]: With dead ends: 272 [2022-11-25 23:21:58,232 INFO L226 Difference]: Without dead ends: 269 [2022-11-25 23:21:58,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 235 SyntacticMatches, 111 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3159 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=699, Invalid=1557, Unknown=0, NotChecked=0, Total=2256 [2022-11-25 23:21:58,233 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:21:58,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 157 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:21:58,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-25 23:21:58,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-11-25 23:21:58,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.085820895522388) internal successors, (291), 268 states have internal predecessors, (291), 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) [2022-11-25 23:21:58,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 291 transitions. [2022-11-25 23:21:58,289 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 291 transitions. Word has length 124 [2022-11-25 23:21:58,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:21:58,293 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 291 transitions. [2022-11-25 23:21:58,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 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) [2022-11-25 23:21:58,293 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 291 transitions. [2022-11-25 23:21:58,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-25 23:21:58,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:21:58,300 INFO L195 NwaCegarLoop]: trace histogram [220, 22, 22, 1, 1, 1, 1] [2022-11-25 23:21:58,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-25 23:21:58,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:21:58,511 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:21:58,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:21:58,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1876164465, now seen corresponding path program 7 times [2022-11-25 23:21:58,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:21:58,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055467741] [2022-11-25 23:21:58,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:21:58,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:21:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:22:00,569 INFO L134 CoverageAnalysis]: Checked inductivity of 29414 backedges. 0 proven. 28204 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-25 23:22:00,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:22:00,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055467741] [2022-11-25 23:22:00,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055467741] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:22:00,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671071353] [2022-11-25 23:22:00,569 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 23:22:00,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:22:00,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:22:00,571 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:22:00,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 23:22:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:22:00,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-25 23:22:00,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:22:01,760 INFO L134 CoverageAnalysis]: Checked inductivity of 29414 backedges. 0 proven. 28204 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-25 23:22:01,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:22:03,401 INFO L134 CoverageAnalysis]: Checked inductivity of 29414 backedges. 0 proven. 28204 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-25 23:22:03,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671071353] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:22:03,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1112854377] [2022-11-25 23:22:03,403 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-25 23:22:03,404 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:22:03,404 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:22:03,404 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:22:03,404 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:22:03,529 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:22:03,857 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8479#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:22:03,857 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:22:03,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:22:03,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2022-11-25 23:22:03,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381343026] [2022-11-25 23:22:03,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:22:03,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-25 23:22:03,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:22:03,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-25 23:22:03,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=1973, Unknown=0, NotChecked=0, Total=2652 [2022-11-25 23:22:03,864 INFO L87 Difference]: Start difference. First operand 269 states and 291 transitions. Second operand has 49 states, 49 states have (on average 2.857142857142857) internal successors, (140), 48 states have internal predecessors, (140), 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) [2022-11-25 23:22:33,978 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 86 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:24:33,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:24:33,895 INFO L93 Difference]: Finished difference Result 560 states and 629 transitions. [2022-11-25 23:24:33,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-25 23:24:33,895 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.857142857142857) internal successors, (140), 48 states have internal predecessors, (140), 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 268 [2022-11-25 23:24:33,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:24:33,899 INFO L225 Difference]: With dead ends: 560 [2022-11-25 23:24:33,899 INFO L226 Difference]: Without dead ends: 557 [2022-11-25 23:24:33,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 775 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 151.0s TimeCoverageRelationStatistics Valid=1751, Invalid=3644, Unknown=7, NotChecked=0, Total=5402 [2022-11-25 23:24:33,901 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 52 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:24:33,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 603 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-25 23:24:33,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-11-25 23:24:33,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2022-11-25 23:24:33,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 1.0845323741007193) internal successors, (603), 556 states have internal predecessors, (603), 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) [2022-11-25 23:24:33,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 603 transitions. [2022-11-25 23:24:33,980 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 603 transitions. Word has length 268 [2022-11-25 23:24:33,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:24:33,980 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 603 transitions. [2022-11-25 23:24:33,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.857142857142857) internal successors, (140), 48 states have internal predecessors, (140), 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) [2022-11-25 23:24:33,981 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 603 transitions. [2022-11-25 23:24:33,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2022-11-25 23:24:33,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:24:33,993 INFO L195 NwaCegarLoop]: trace histogram [460, 46, 46, 1, 1, 1, 1] [2022-11-25 23:24:34,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-25 23:24:34,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:24:34,201 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:24:34,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:24:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash 320553233, now seen corresponding path program 8 times [2022-11-25 23:24:34,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:24:34,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374978568] [2022-11-25 23:24:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:24:34,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:24:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:24:40,879 INFO L134 CoverageAnalysis]: Checked inductivity of 128846 backedges. 0 proven. 126316 refuted. 0 times theorem prover too weak. 2530 trivial. 0 not checked. [2022-11-25 23:24:40,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:24:40,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374978568] [2022-11-25 23:24:40,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374978568] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:24:40,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141755779] [2022-11-25 23:24:40,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:24:40,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:24:40,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:24:40,882 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:24:40,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 23:26:18,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 277 check-sat command(s) [2022-11-25 23:26:18,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:26:18,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 1693 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-25 23:26:18,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:26:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 128846 backedges. 0 proven. 126335 refuted. 0 times theorem prover too weak. 2511 trivial. 0 not checked. [2022-11-25 23:26:20,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:26:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 128846 backedges. 502 proven. 64562 refuted. 0 times theorem prover too weak. 63782 trivial. 0 not checked. [2022-11-25 23:26:22,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141755779] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:26:22,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1268701252] [2022-11-25 23:26:22,194 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-25 23:26:22,194 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:26:22,194 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:26:22,194 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:26:22,195 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:26:22,326 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:26:52,898 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14137#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:26:52,898 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:26:52,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:26:52,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 51, 6] total 57 [2022-11-25 23:26:52,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887053870] [2022-11-25 23:26:52,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:26:52,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-25 23:26:52,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:26:52,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-25 23:26:52,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=3382, Unknown=0, NotChecked=0, Total=3660 [2022-11-25 23:26:52,901 INFO L87 Difference]: Start difference. First operand 557 states and 603 transitions. Second operand has 58 states, 58 states have (on average 2.7586206896551726) internal successors, (160), 57 states have internal predecessors, (160), 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) [2022-11-25 23:26:56,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:26:56,117 INFO L93 Difference]: Finished difference Result 596 states and 646 transitions. [2022-11-25 23:26:56,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-25 23:26:56,117 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.7586206896551726) internal successors, (160), 57 states have internal predecessors, (160), 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 556 [2022-11-25 23:26:56,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:26:56,120 INFO L225 Difference]: With dead ends: 596 [2022-11-25 23:26:56,120 INFO L226 Difference]: Without dead ends: 592 [2022-11-25 23:26:56,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1739 GetRequests, 1148 SyntacticMatches, 507 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5515 ImplicationChecksByTransitivity, 33.9s TimeCoverageRelationStatistics Valid=450, Invalid=6860, Unknown=0, NotChecked=0, Total=7310 [2022-11-25 23:26:56,123 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 10 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 3488 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 3515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:26:56,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1537 Invalid, 3515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3488 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-25 23:26:56,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-11-25 23:26:56,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 569. [2022-11-25 23:26:56,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.0845070422535212) internal successors, (616), 568 states have internal predecessors, (616), 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) [2022-11-25 23:26:56,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 616 transitions. [2022-11-25 23:26:56,220 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 616 transitions. Word has length 556 [2022-11-25 23:26:56,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:26:56,221 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 616 transitions. [2022-11-25 23:26:56,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.7586206896551726) internal successors, (160), 57 states have internal predecessors, (160), 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) [2022-11-25 23:26:56,221 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 616 transitions. [2022-11-25 23:26:56,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2022-11-25 23:26:56,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:26:56,235 INFO L195 NwaCegarLoop]: trace histogram [470, 47, 47, 1, 1, 1, 1] [2022-11-25 23:26:56,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 23:26:56,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:26:56,451 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:26:56,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:26:56,452 INFO L85 PathProgramCache]: Analyzing trace with hash 2146291405, now seen corresponding path program 9 times [2022-11-25 23:26:56,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:26:56,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880335782] [2022-11-25 23:26:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:26:56,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:26:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:27:01,734 INFO L134 CoverageAnalysis]: Checked inductivity of 134514 backedges. 0 proven. 131929 refuted. 0 times theorem prover too weak. 2585 trivial. 0 not checked. [2022-11-25 23:27:01,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:27:01,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880335782] [2022-11-25 23:27:01,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880335782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:27:01,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276980877] [2022-11-25 23:27:01,735 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 23:27:01,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:27:01,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:27:01,737 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:27:01,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcc3602-b42a-4252-9533-7ab1b957c8be/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 23:27:02,388 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 23:27:02,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:27:02,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-25 23:27:02,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:27:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 134514 backedges. 0 proven. 131929 refuted. 0 times theorem prover too weak. 2585 trivial. 0 not checked. [2022-11-25 23:27:04,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:27:10,140 INFO L134 CoverageAnalysis]: Checked inductivity of 134514 backedges. 0 proven. 131929 refuted. 0 times theorem prover too weak. 2585 trivial. 0 not checked. [2022-11-25 23:27:10,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276980877] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:27:10,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1592987136] [2022-11-25 23:27:10,142 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-25 23:27:10,143 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:27:10,143 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:27:10,143 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:27:10,143 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:27:10,292 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:27:58,677 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20009#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 23:27:58,677 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 23:27:58,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:27:58,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 98 [2022-11-25 23:27:58,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417811076] [2022-11-25 23:27:58,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 23:27:58,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-11-25 23:27:58,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:27:58,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-11-25 23:27:58,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2604, Invalid=7698, Unknown=0, NotChecked=0, Total=10302 [2022-11-25 23:27:58,684 INFO L87 Difference]: Start difference. First operand 569 states and 616 transitions. Second operand has 99 states, 99 states have (on average 2.9292929292929295) internal successors, (290), 98 states have internal predecessors, (290), 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) [2022-11-25 23:29:07,750 WARN L233 SmtUtils]: Spent 15.22s on a formula simplification. DAG size of input: 194 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:30:20,596 WARN L233 SmtUtils]: Spent 12.48s on a formula simplification. DAG size of input: 190 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:31:30,093 WARN L233 SmtUtils]: Spent 16.92s on a formula simplification. DAG size of input: 186 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:32:41,867 WARN L233 SmtUtils]: Spent 11.70s on a formula simplification. DAG size of input: 182 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:32:43,902 WARN L837 $PredicateComparison]: unable to prove that (and (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 35) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 39) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 43) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 33) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 42) 4294967296) 268435455) (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 5) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 29) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 22) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 31) 4294967296) 268435455) (< (mod (+ 41 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) 268435455) (< (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 3) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 1) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296) 268435455) (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 21) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 9) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 32) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 37) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455) (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 30) 4294967296) 268435455)) is different from false [2022-11-25 23:34:08,442 WARN L233 SmtUtils]: Spent 12.07s on a formula simplification. DAG size of input: 176 DAG size of output: 12 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:35:25,070 WARN L233 SmtUtils]: Spent 19.53s on a formula simplification. DAG size of input: 174 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)