./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0 --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 64bit --witnessprinter.graph.data.programhash 0e771275e23cfd9924146ad4a0592fc14c96989d7773b80a2279912b761b2779 --- 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-e04fb08 [2022-11-16 20:35:42,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:35:42,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:35:42,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:35:42,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:35:42,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:35:42,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:35:42,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:35:42,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:35:42,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:35:42,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:35:42,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:35:42,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:35:42,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:35:42,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:35:42,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:35:42,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:35:42,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:35:42,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:35:42,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:35:42,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:35:42,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:35:42,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:35:42,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:35:42,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:35:42,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:35:42,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:35:42,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:35:42,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:35:42,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:35:42,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:35:42,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:35:42,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:35:42,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:35:42,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:35:42,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:35:42,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:35:42,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:35:42,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:35:42,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:35:42,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:35:42,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 20:35:42,968 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:35:42,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:35:42,969 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:35:42,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:35:42,970 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:35:42,970 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:35:42,970 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:35:42,975 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:35:42,975 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:35:42,975 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:35:42,977 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:35:42,977 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:35:42,977 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:35:42,978 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:35:42,978 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:35:42,978 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:35:42,979 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:35:42,979 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:35:42,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:35:42,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:35:42,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:35:42,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:35:42,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:35:42,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:35:42,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:35:42,984 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:35:42,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:35:42,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:35:42,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:35:42,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:35:42,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:35:42,986 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:35:42,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:35:42,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:35:42,988 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:35:42,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:35:42,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:35:42,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:35:42,989 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_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e771275e23cfd9924146ad4a0592fc14c96989d7773b80a2279912b761b2779 [2022-11-16 20:35:43,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:35:43,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:35:43,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:35:43,339 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:35:43,340 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:35:43,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c [2022-11-16 20:35:43,436 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/data/cdea173ac/c438941e2eb446dd8a87390bc219ba4a/FLAG94594ee3d [2022-11-16 20:35:44,016 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:35:44,019 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c [2022-11-16 20:35:44,035 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/data/cdea173ac/c438941e2eb446dd8a87390bc219ba4a/FLAG94594ee3d [2022-11-16 20:35:44,363 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/data/cdea173ac/c438941e2eb446dd8a87390bc219ba4a [2022-11-16 20:35:44,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:35:44,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:35:44,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:35:44,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:35:44,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:35:44,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:35:44" (1/1) ... [2022-11-16 20:35:44,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7472e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:44, skipping insertion in model container [2022-11-16 20:35:44,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:35:44" (1/1) ... [2022-11-16 20:35:44,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:35:44,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:35:44,668 WARN L229 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_f0f31372-1026-4733-877a-38311746e5f5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c[1107,1120] [2022-11-16 20:35:44,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:35:44,736 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:35:44,749 WARN L229 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_f0f31372-1026-4733-877a-38311746e5f5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c[1107,1120] [2022-11-16 20:35:44,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:35:44,814 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:35:44,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:44 WrapperNode [2022-11-16 20:35:44,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:35:44,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:35:44,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:35:44,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:35:44,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:44" (1/1) ... [2022-11-16 20:35:44,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:44" (1/1) ... [2022-11-16 20:35:44,887 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 145 [2022-11-16 20:35:44,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:35:44,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:35:44,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:35:44,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:35:44,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:44" (1/1) ... [2022-11-16 20:35:44,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:44" (1/1) ... [2022-11-16 20:35:44,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:44" (1/1) ... [2022-11-16 20:35:44,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:44" (1/1) ... [2022-11-16 20:35:44,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:44" (1/1) ... [2022-11-16 20:35:44,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:44" (1/1) ... [2022-11-16 20:35:44,942 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:44" (1/1) ... [2022-11-16 20:35:44,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:44" (1/1) ... [2022-11-16 20:35:44,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:35:44,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:35:44,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:35:44,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:35:44,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:44" (1/1) ... [2022-11-16 20:35:44,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:35:44,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:35:44,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:35:44,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:35:45,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:35:45,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:35:45,109 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:35:45,112 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:35:45,336 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:35:45,641 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:35:45,641 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 20:35:45,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:35:45 BoogieIcfgContainer [2022-11-16 20:35:45,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:35:45,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:35:45,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:35:45,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:35:45,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:35:44" (1/3) ... [2022-11-16 20:35:45,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a091a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:35:45, skipping insertion in model container [2022-11-16 20:35:45,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:44" (2/3) ... [2022-11-16 20:35:45,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a091a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:35:45, skipping insertion in model container [2022-11-16 20:35:45,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:35:45" (3/3) ... [2022-11-16 20:35:45,658 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal181.c [2022-11-16 20:35:45,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:35:45,678 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:35:45,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:35:45,761 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;@76d8d7d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:35:45,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:35:45,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:35:45,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 20:35:45,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:35:45,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 20:35:45,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:35:45,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:35:45,782 INFO L85 PathProgramCache]: Analyzing trace with hash 3714874, now seen corresponding path program 1 times [2022-11-16 20:35:45,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:35:45,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795788570] [2022-11-16 20:35:45,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:35:45,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:35:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:35:45,978 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 20:35:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:35:46,084 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 20:35:46,086 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 20:35:46,087 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 20:35:46,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:35:46,094 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 20:35:46,098 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 20:35:46,116 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-16 20:35:46,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 08:35:46 BoogieIcfgContainer [2022-11-16 20:35:46,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 20:35:46,124 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 20:35:46,124 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 20:35:46,124 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 20:35:46,125 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:35:45" (3/4) ... [2022-11-16 20:35:46,128 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 20:35:46,128 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 20:35:46,130 INFO L158 Benchmark]: Toolchain (without parser) took 1757.65ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 64.9MB in the beginning and 73.2MB in the end (delta: -8.3MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2022-11-16 20:35:46,130 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 98.6MB. Free memory is still 52.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:35:46,131 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.64ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 64.7MB in the beginning and 92.5MB in the end (delta: -27.9MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2022-11-16 20:35:46,131 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.45ms. Allocated memory is still 119.5MB. Free memory was 92.2MB in the beginning and 90.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 20:35:46,132 INFO L158 Benchmark]: Boogie Preprocessor took 57.03ms. Allocated memory is still 119.5MB. Free memory was 90.3MB in the beginning and 88.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 20:35:46,133 INFO L158 Benchmark]: RCFGBuilder took 697.65ms. Allocated memory is still 119.5MB. Free memory was 88.7MB in the beginning and 94.3MB in the end (delta: -5.6MB). Peak memory consumption was 33.4MB. Max. memory is 16.1GB. [2022-11-16 20:35:46,133 INFO L158 Benchmark]: TraceAbstraction took 477.03ms. Allocated memory is still 119.5MB. Free memory was 93.5MB in the beginning and 73.4MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-16 20:35:46,134 INFO L158 Benchmark]: Witness Printer took 4.59ms. Allocated memory is still 119.5MB. Free memory was 73.4MB in the beginning and 73.2MB in the end (delta: 208.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:35:46,137 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 98.6MB. Free memory is still 52.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 437.64ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 64.7MB in the beginning and 92.5MB in the end (delta: -27.9MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.45ms. Allocated memory is still 119.5MB. Free memory was 92.2MB in the beginning and 90.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.03ms. Allocated memory is still 119.5MB. Free memory was 90.3MB in the beginning and 88.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 697.65ms. Allocated memory is still 119.5MB. Free memory was 88.7MB in the beginning and 94.3MB in the end (delta: -5.6MB). Peak memory consumption was 33.4MB. Max. memory is 16.1GB. * TraceAbstraction took 477.03ms. Allocated memory is still 119.5MB. Free memory was 93.5MB in the beginning and 73.4MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.59ms. Allocated memory is still 119.5MB. Free memory was 73.4MB in the beginning and 73.2MB in the end (delta: 208.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 62, overapproximation of bitwiseOr at line 78, overapproximation of bitwiseAnd at line 67. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 32); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (32 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 1); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (1 - 1); [L31] const SORT_3 var_7 = 0; [L32] const SORT_1 var_11 = 0; [L33] const SORT_3 var_24 = 1; [L35] SORT_1 input_2; [L36] SORT_3 input_4; [L37] SORT_1 input_5; [L38] SORT_1 input_6; [L40] SORT_3 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L41] SORT_1 state_12 = __VERIFIER_nondet_uint() & mask_SORT_1; [L42] SORT_3 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L43] SORT_1 state_17 = __VERIFIER_nondet_uint() & mask_SORT_1; [L45] SORT_3 init_9_arg_1 = var_7; [L46] state_8 = init_9_arg_1 [L47] SORT_1 init_13_arg_1 = var_11; [L48] state_12 = init_13_arg_1 [L49] SORT_3 init_15_arg_1 = var_7; [L50] state_14 = init_15_arg_1 [L51] SORT_1 init_18_arg_1 = var_11; [L52] state_17 = init_18_arg_1 VAL [init_13_arg_1=0, init_15_arg_1=0, init_18_arg_1=0, init_9_arg_1=0, mask_SORT_1=4294967295, mask_SORT_3=1, msb_SORT_1=2147483648, msb_SORT_3=1, state_12=0, state_14=0, state_17=0, state_8=0, var_11=0, var_24=1, var_7=0] [L55] input_2 = __VERIFIER_nondet_uint() [L56] input_4 = __VERIFIER_nondet_uchar() [L57] input_5 = __VERIFIER_nondet_uint() [L58] input_6 = __VERIFIER_nondet_uint() [L61] SORT_3 var_10_arg_0 = state_8; [L62] SORT_3 var_10 = ~var_10_arg_0; [L63] SORT_3 var_16_arg_0 = state_14; [L64] SORT_1 var_16_arg_1 = state_12; [L65] SORT_1 var_16_arg_2 = input_2; [L66] SORT_1 var_16 = var_16_arg_0 ? var_16_arg_1 : var_16_arg_2; [L67] var_16 = var_16 & mask_SORT_1 [L68] SORT_3 var_19_arg_0 = state_14; [L69] SORT_1 var_19_arg_1 = state_17; [L70] SORT_1 var_19_arg_2 = input_2; [L71] SORT_1 var_19 = var_19_arg_0 ? var_19_arg_1 : var_19_arg_2; [L72] var_19 = var_19 & mask_SORT_1 [L73] SORT_1 var_20_arg_0 = var_16; [L74] SORT_1 var_20_arg_1 = var_19; [L75] SORT_3 var_20 = var_20_arg_0 == var_20_arg_1; [L76] SORT_3 var_21_arg_0 = var_10; [L77] SORT_3 var_21_arg_1 = var_20; [L78] SORT_3 var_21 = var_21_arg_0 | var_21_arg_1; [L79] SORT_3 var_25_arg_0 = var_21; [L80] SORT_3 var_25 = ~var_25_arg_0; [L81] SORT_3 var_26_arg_0 = var_24; [L82] SORT_3 var_26_arg_1 = var_25; [L83] SORT_3 var_26 = var_26_arg_0 & var_26_arg_1; [L84] var_26 = var_26 & mask_SORT_3 [L85] SORT_3 bad_27_arg_0 = var_26; [L86] CALL __VERIFIER_assert(!(bad_27_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 20:35:46,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0 --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 64bit --witnessprinter.graph.data.programhash 0e771275e23cfd9924146ad4a0592fc14c96989d7773b80a2279912b761b2779 --- 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-e04fb08 [2022-11-16 20:35:48,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:35:48,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:35:48,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:35:48,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:35:48,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:35:48,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:35:48,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:35:48,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:35:48,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:35:48,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:35:48,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:35:48,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:35:48,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:35:48,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:35:48,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:35:48,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:35:48,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:35:48,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:35:48,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:35:48,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:35:48,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:35:48,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:35:48,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:35:48,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:35:48,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:35:48,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:35:48,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:35:48,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:35:48,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:35:48,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:35:48,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:35:48,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:35:48,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:35:48,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:35:48,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:35:48,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:35:48,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:35:48,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:35:48,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:35:48,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:35:48,680 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-16 20:35:48,708 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:35:48,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:35:48,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:35:48,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:35:48,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:35:48,713 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:35:48,713 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:35:48,714 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:35:48,714 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:35:48,714 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:35:48,715 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:35:48,715 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:35:48,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:35:48,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:35:48,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:35:48,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:35:48,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:35:48,718 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 20:35:48,718 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 20:35:48,718 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 20:35:48,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:35:48,719 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:35:48,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:35:48,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:35:48,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 20:35:48,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:35:48,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:35:48,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:35:48,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:35:48,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:35:48,721 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 20:35:48,721 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 20:35:48,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:35:48,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:35:48,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 20:35:48,722 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e771275e23cfd9924146ad4a0592fc14c96989d7773b80a2279912b761b2779 [2022-11-16 20:35:49,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:35:49,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:35:49,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:35:49,157 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:35:49,157 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:35:49,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c [2022-11-16 20:35:49,226 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/data/779557fd5/a33b243068ee49eb8e73bb7064dc3dae/FLAG4fe6d77ab [2022-11-16 20:35:49,675 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:35:49,676 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c [2022-11-16 20:35:49,684 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/data/779557fd5/a33b243068ee49eb8e73bb7064dc3dae/FLAG4fe6d77ab [2022-11-16 20:35:50,076 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/data/779557fd5/a33b243068ee49eb8e73bb7064dc3dae [2022-11-16 20:35:50,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:35:50,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:35:50,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:35:50,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:35:50,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:35:50,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:35:50" (1/1) ... [2022-11-16 20:35:50,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@234850d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:50, skipping insertion in model container [2022-11-16 20:35:50,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:35:50" (1/1) ... [2022-11-16 20:35:50,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:35:50,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:35:50,320 WARN L229 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_f0f31372-1026-4733-877a-38311746e5f5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c[1107,1120] [2022-11-16 20:35:50,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:35:50,387 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:35:50,423 WARN L229 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_f0f31372-1026-4733-877a-38311746e5f5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal181.c[1107,1120] [2022-11-16 20:35:50,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:35:50,482 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:35:50,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:50 WrapperNode [2022-11-16 20:35:50,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:35:50,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:35:50,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:35:50,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:35:50,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:50" (1/1) ... [2022-11-16 20:35:50,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:50" (1/1) ... [2022-11-16 20:35:50,530 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 110 [2022-11-16 20:35:50,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:35:50,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:35:50,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:35:50,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:35:50,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:50" (1/1) ... [2022-11-16 20:35:50,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:50" (1/1) ... [2022-11-16 20:35:50,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:50" (1/1) ... [2022-11-16 20:35:50,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:50" (1/1) ... [2022-11-16 20:35:50,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:50" (1/1) ... [2022-11-16 20:35:50,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:50" (1/1) ... [2022-11-16 20:35:50,552 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:50" (1/1) ... [2022-11-16 20:35:50,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:50" (1/1) ... [2022-11-16 20:35:50,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:35:50,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:35:50,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:35:50,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:35:50,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:50" (1/1) ... [2022-11-16 20:35:50,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:35:50,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:35:50,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:35:50,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:35:50,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:35:50,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:35:50,775 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:35:50,777 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:35:51,033 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:35:51,039 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:35:51,039 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 20:35:51,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:35:51 BoogieIcfgContainer [2022-11-16 20:35:51,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:35:51,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:35:51,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:35:51,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:35:51,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:35:50" (1/3) ... [2022-11-16 20:35:51,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e49e93f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:35:51, skipping insertion in model container [2022-11-16 20:35:51,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:50" (2/3) ... [2022-11-16 20:35:51,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e49e93f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:35:51, skipping insertion in model container [2022-11-16 20:35:51,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:35:51" (3/3) ... [2022-11-16 20:35:51,078 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal181.c [2022-11-16 20:35:51,108 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:35:51,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:35:51,189 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:35:51,198 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;@2827e34f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:35:51,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:35:51,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:35:51,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 20:35:51,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:35:51,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 20:35:51,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:35:51,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:35:51,220 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-16 20:35:51,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:35:51,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425487162] [2022-11-16 20:35:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:35:51,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:35:51,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:35:51,247 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:35:51,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 20:35:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:35:51,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 20:35:51,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:35:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:51,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:35:51,537 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:35:51,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425487162] [2022-11-16 20:35:51,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425487162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:35:51,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:35:51,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:35:51,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378153349] [2022-11-16 20:35:51,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:35:51,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:35:51,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:35:51,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:35:51,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:35:51,600 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-16 20:35:51,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:35:51,676 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-16 20:35:51,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:35:51,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 20:35:51,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:35:51,685 INFO L225 Difference]: With dead ends: 20 [2022-11-16 20:35:51,685 INFO L226 Difference]: Without dead ends: 11 [2022-11-16 20:35:51,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:35:51,690 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:35:51,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:35:51,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-16 20:35:51,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-16 20:35:51,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:35:51,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-16 20:35:51,718 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-16 20:35:51,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:35:51,718 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-16 20:35:51,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-16 20:35:51,719 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-16 20:35:51,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 20:35:51,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:35:51,720 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-16 20:35:51,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 20:35:51,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:35:51,932 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:35:51,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:35:51,933 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-16 20:35:51,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:35:51,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352817499] [2022-11-16 20:35:51,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:35:51,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:35:51,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:35:51,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:35:51,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 20:35:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:35:52,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 20:35:52,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:35:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:52,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:35:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:53,039 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:35:53,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352817499] [2022-11-16 20:35:53,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352817499] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:35:53,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1257135082] [2022-11-16 20:35:53,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:35:53,045 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:35:53,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:35:53,053 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:35:53,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-16 20:35:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:35:53,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 20:35:53,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:35:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:53,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:35:54,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:54,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1257135082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:35:54,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532930145] [2022-11-16 20:35:54,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:35:54,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:35:54,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:35:54,697 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:35:54,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 20:35:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:35:54,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 20:35:54,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:35:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:55,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:35:55,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:55,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532930145] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:35:55,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 20:35:55,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 15 [2022-11-16 20:35:55,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886118301] [2022-11-16 20:35:55,597 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 20:35:55,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 20:35:55,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:35:55,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 20:35:55,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-11-16 20:35:55,599 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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) [2022-11-16 20:35:55,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:35:55,699 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-16 20:35:55,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 20:35:55,700 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 20:35:55,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:35:55,700 INFO L225 Difference]: With dead ends: 16 [2022-11-16 20:35:55,700 INFO L226 Difference]: Without dead ends: 14 [2022-11-16 20:35:55,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-11-16 20:35:55,702 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:35:55,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 22 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2022-11-16 20:35:55,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-16 20:35:55,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-16 20:35:55,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 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) [2022-11-16 20:35:55,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-16 20:35:55,708 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-16 20:35:55,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:35:55,708 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-16 20:35:55,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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) [2022-11-16 20:35:55,709 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-16 20:35:55,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 20:35:55,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:35:55,709 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-16 20:35:55,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-16 20:35:55,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 20:35:56,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 20:35:56,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:35:56,311 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:35:56,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:35:56,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-16 20:35:56,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:35:56,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559664220] [2022-11-16 20:35:56,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:35:56,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:35:56,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:35:56,316 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:35:56,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 20:35:56,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 20:35:56,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:35:56,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-16 20:35:56,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:35:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:56,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:35:57,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:57,885 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:35:57,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559664220] [2022-11-16 20:35:57,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559664220] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:35:57,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1031861049] [2022-11-16 20:35:57,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:35:57,886 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:35:57,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:35:57,895 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:35:57,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-16 20:35:58,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 20:35:58,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:35:58,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-16 20:35:58,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:35:58,408 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:58,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:35:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:59,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1031861049] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:35:59,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597780196] [2022-11-16 20:35:59,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:35:59,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:35:59,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:35:59,339 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:35:59,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 20:35:59,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 20:35:59,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:35:59,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-16 20:35:59,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:35:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:59,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:36:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:36:01,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597780196] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:36:01,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 20:36:01,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 22 [2022-11-16 20:36:01,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673103443] [2022-11-16 20:36:01,904 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 20:36:01,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 20:36:01,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:36:01,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 20:36:01,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2022-11-16 20:36:01,907 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 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) [2022-11-16 20:36:02,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:36:02,159 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-11-16 20:36:02,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 20:36:02,160 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 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 11 [2022-11-16 20:36:02,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:36:02,161 INFO L225 Difference]: With dead ends: 13 [2022-11-16 20:36:02,161 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 20:36:02,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2022-11-16 20:36:02,162 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 22 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:36:02,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 11 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 14 Unchecked, 0.1s Time] [2022-11-16 20:36:02,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 20:36:02,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 20:36:02,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:36:02,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 20:36:02,164 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-11-16 20:36:02,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:36:02,165 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 20:36:02,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 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) [2022-11-16 20:36:02,165 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 20:36:02,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 20:36:02,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 20:36:02,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 20:36:02,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 20:36:02,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-16 20:36:02,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 20:36:02,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 20:36:02,916 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 20:36:02,916 INFO L895 garLoopResultBuilder]: At program point L126(lines 22 127) the Hoare annotation is: false [2022-11-16 20:36:02,917 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-16 20:36:02,917 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 20:36:02,917 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-16 20:36:02,917 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-16 20:36:02,917 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-16 20:36:02,917 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-16 20:36:02,918 INFO L895 garLoopResultBuilder]: At program point L53-2(lines 53 125) the Hoare annotation is: (let ((.cse3 (= |ULTIMATE.start_main_~state_17~0#1| |ULTIMATE.start_main_~state_12~0#1|)) (.cse5 (= |ULTIMATE.start_main_~state_8~0#1| |ULTIMATE.start_main_~var_24~0#1|)) (.cse6 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) (.cse0 (= |ULTIMATE.start_main_~var_7~0#1| (_ bv0 8))) (.cse1 (= (_ bv1 8) |ULTIMATE.start_main_~var_24~0#1|)) (.cse2 (= (bvadd |ULTIMATE.start_main_~mask_SORT_1~0#1| (_ bv1 32)) (_ bv0 32))) (.cse4 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_3~0#1|))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~state_8~0#1| |ULTIMATE.start_main_~var_7~0#1|) .cse2 .cse3 .cse4) (and .cse5 .cse6 (= ((_ extract 7 0) (bvand (_ bv1 32) ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_3~0#1|))) |ULTIMATE.start_main_~state_14~0#1|) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse6 .cse0 .cse1 .cse2 .cse4 (= (_ bv0 8) |ULTIMATE.start_main_~state_14~0#1|)))) [2022-11-16 20:36:02,918 INFO L899 garLoopResultBuilder]: For program point L53-3(lines 53 125) no Hoare annotation was computed. [2022-11-16 20:36:02,918 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-16 20:36:02,921 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1] [2022-11-16 20:36:02,924 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 20:36:02,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 08:36:02 BoogieIcfgContainer [2022-11-16 20:36:02,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 20:36:02,937 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 20:36:02,938 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 20:36:02,938 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 20:36:02,938 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:35:51" (3/4) ... [2022-11-16 20:36:02,941 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 20:36:02,951 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-16 20:36:02,951 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-16 20:36:02,952 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 20:36:02,993 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 20:36:02,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 20:36:02,994 INFO L158 Benchmark]: Toolchain (without parser) took 12911.70ms. Allocated memory was 62.9MB in the beginning and 192.9MB in the end (delta: 130.0MB). Free memory was 42.6MB in the beginning and 104.5MB in the end (delta: -61.9MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. [2022-11-16 20:36:02,995 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 62.9MB. Free memory is still 44.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:36:02,995 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.47ms. Allocated memory is still 62.9MB. Free memory was 42.5MB in the beginning and 45.7MB in the end (delta: -3.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 20:36:02,995 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.37ms. Allocated memory is still 62.9MB. Free memory was 45.7MB in the beginning and 43.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:36:02,996 INFO L158 Benchmark]: Boogie Preprocessor took 24.64ms. Allocated memory is still 62.9MB. Free memory was 43.8MB in the beginning and 42.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 20:36:02,996 INFO L158 Benchmark]: RCFGBuilder took 484.44ms. Allocated memory is still 62.9MB. Free memory was 42.2MB in the beginning and 29.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 20:36:02,997 INFO L158 Benchmark]: TraceAbstraction took 11865.38ms. Allocated memory was 79.7MB in the beginning and 192.9MB in the end (delta: 113.2MB). Free memory was 62.6MB in the beginning and 107.7MB in the end (delta: -45.1MB). Peak memory consumption was 67.5MB. Max. memory is 16.1GB. [2022-11-16 20:36:02,997 INFO L158 Benchmark]: Witness Printer took 56.18ms. Allocated memory is still 192.9MB. Free memory was 107.7MB in the beginning and 104.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 20:36:02,999 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 62.9MB. Free memory is still 44.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 395.47ms. Allocated memory is still 62.9MB. Free memory was 42.5MB in the beginning and 45.7MB in the end (delta: -3.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.37ms. Allocated memory is still 62.9MB. Free memory was 45.7MB in the beginning and 43.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.64ms. Allocated memory is still 62.9MB. Free memory was 43.8MB in the beginning and 42.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 484.44ms. Allocated memory is still 62.9MB. Free memory was 42.2MB in the beginning and 29.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 11865.38ms. Allocated memory was 79.7MB in the beginning and 192.9MB in the end (delta: 113.2MB). Free memory was 62.6MB in the beginning and 107.7MB in the end (delta: -45.1MB). Peak memory consumption was 67.5MB. Max. memory is 16.1GB. * Witness Printer took 56.18ms. Allocated memory is still 192.9MB. Free memory was 107.7MB in the beginning and 104.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.8s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 29 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 11 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=2, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 78 HoareAnnotationTreeSize, 2 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 33 QuantifiedInterpolants, 3601 SizeOfPredicates, 309 NumberOfNonLiveVariables, 903 ConjunctsInSsa, 270 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 11/54 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: ((((((var_7 == 0bv8 && 1bv8 == var_24) && state_8 == var_7) && ~bvadd64(mask_SORT_1, 1bv32) == 0bv32) && state_17 == state_12) && 1bv8 == mask_SORT_3) || (((((((state_8 == var_24 && cond == 1bv32) && ~bvand32(1bv32, ~zero_extendFrom8To32(mask_SORT_3))[7:0] == state_14) && var_7 == 0bv8) && 1bv8 == var_24) && ~bvadd64(mask_SORT_1, 1bv32) == 0bv32) && state_17 == state_12) && 1bv8 == mask_SORT_3)) || ((((((state_8 == var_24 && cond == 1bv32) && var_7 == 0bv8) && 1bv8 == var_24) && ~bvadd64(mask_SORT_1, 1bv32) == 0bv32) && 1bv8 == mask_SORT_3) && 0bv8 == state_14) RESULT: Ultimate proved your program to be correct! [2022-11-16 20:36:03,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0f31372-1026-4733-877a-38311746e5f5/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE