./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3eb113140124fef67732f40fc61a49bd06a18a65880ac225aa4f334e11de8939 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:19:52,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:19:52,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:19:52,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:19:52,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:19:52,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:19:52,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:19:52,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:19:52,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:19:52,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:19:52,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:19:52,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:19:52,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:19:52,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:19:52,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:19:52,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:19:52,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:19:52,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:19:52,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:19:52,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:19:52,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:19:52,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:19:52,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:19:52,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:19:52,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:19:52,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:19:52,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:19:53,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:19:53,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:19:53,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:19:53,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:19:53,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:19:53,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:19:53,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:19:53,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:19:53,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:19:53,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:19:53,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:19:53,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:19:53,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:19:53,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:19:53,008 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 14:19:53,027 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:19:53,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:19:53,028 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:19:53,028 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:19:53,028 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:19:53,029 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:19:53,029 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:19:53,029 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:19:53,029 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:19:53,029 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:19:53,029 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:19:53,030 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:19:53,030 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:19:53,030 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:19:53,030 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:19:53,030 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:19:53,030 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:19:53,030 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:19:53,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:19:53,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:19:53,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:19:53,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:19:53,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:19:53,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:19:53,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:19:53,032 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:19:53,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:19:53,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:19:53,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:19:53,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:19:53,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:19:53,033 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:19:53,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:19:53,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:19:53,034 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:19:53,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:19:53,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:19:53,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:19:53,034 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_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3eb113140124fef67732f40fc61a49bd06a18a65880ac225aa4f334e11de8939 [2022-12-14 14:19:53,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:19:53,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:19:53,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:19:53,215 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:19:53,216 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:19:53,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c [2022-12-14 14:19:55,833 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:19:55,985 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:19:55,986 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c [2022-12-14 14:19:55,992 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/data/b8565fdab/7fa4294962464c44a78eaa08527526f3/FLAG1e107f3a4 [2022-12-14 14:19:56,003 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/data/b8565fdab/7fa4294962464c44a78eaa08527526f3 [2022-12-14 14:19:56,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:19:56,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:19:56,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:19:56,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:19:56,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:19:56,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:19:56" (1/1) ... [2022-12-14 14:19:56,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fffbc37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:56, skipping insertion in model container [2022-12-14 14:19:56,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:19:56" (1/1) ... [2022-12-14 14:19:56,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:19:56,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:19:56,163 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c[1107,1120] [2022-12-14 14:19:56,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:19:56,247 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:19:56,258 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c[1107,1120] [2022-12-14 14:19:56,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:19:56,316 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:19:56,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:56 WrapperNode [2022-12-14 14:19:56,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:19:56,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:19:56,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:19:56,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:19:56,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:56" (1/1) ... [2022-12-14 14:19:56,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:56" (1/1) ... [2022-12-14 14:19:56,355 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 421 [2022-12-14 14:19:56,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:19:56,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:19:56,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:19:56,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:19:56,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:56" (1/1) ... [2022-12-14 14:19:56,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:56" (1/1) ... [2022-12-14 14:19:56,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:56" (1/1) ... [2022-12-14 14:19:56,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:56" (1/1) ... [2022-12-14 14:19:56,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:56" (1/1) ... [2022-12-14 14:19:56,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:56" (1/1) ... [2022-12-14 14:19:56,380 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:56" (1/1) ... [2022-12-14 14:19:56,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:56" (1/1) ... [2022-12-14 14:19:56,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:19:56,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:19:56,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:19:56,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:19:56,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:56" (1/1) ... [2022-12-14 14:19:56,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:19:56,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:19:56,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:19:56,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:19:56,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:19:56,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:19:56,558 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:19:56,560 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:19:57,190 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:19:57,205 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:19:57,205 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:19:57,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:19:57 BoogieIcfgContainer [2022-12-14 14:19:57,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:19:57,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:19:57,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:19:57,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:19:57,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:19:56" (1/3) ... [2022-12-14 14:19:57,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488ad358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:19:57, skipping insertion in model container [2022-12-14 14:19:57,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:19:56" (2/3) ... [2022-12-14 14:19:57,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488ad358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:19:57, skipping insertion in model container [2022-12-14 14:19:57,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:19:57" (3/3) ... [2022-12-14 14:19:57,213 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c [2022-12-14 14:19:57,226 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:19:57,227 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:19:57,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:19:57,264 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;@6873c183, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:19:57,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:19:57,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:19:57,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 14:19:57,271 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:19:57,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 14:19:57,272 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:19:57,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:19:57,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 14:19:57,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:19:57,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61897123] [2022-12-14 14:19:57,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:19:57,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:19:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:19:57,425 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 14:19:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:19:57,479 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 14:19:57,481 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 14:19:57,482 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 14:19:57,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:19:57,486 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 14:19:57,489 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:19:57,502 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 14:19:57,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:19:57 BoogieIcfgContainer [2022-12-14 14:19:57,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:19:57,508 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:19:57,508 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:19:57,509 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:19:57,509 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:19:57" (3/4) ... [2022-12-14 14:19:57,514 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 14:19:57,514 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:19:57,515 INFO L158 Benchmark]: Toolchain (without parser) took 1509.18ms. Allocated memory is still 201.3MB. Free memory was 138.3MB in the beginning and 170.9MB in the end (delta: -32.6MB). Peak memory consumption was 81.3MB. Max. memory is 16.1GB. [2022-12-14 14:19:57,515 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 100.7MB. Free memory was 65.0MB in the beginning and 64.9MB in the end (delta: 113.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:19:57,516 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.37ms. Allocated memory is still 201.3MB. Free memory was 138.3MB in the beginning and 119.8MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 14:19:57,516 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.56ms. Allocated memory is still 201.3MB. Free memory was 119.8MB in the beginning and 115.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 14:19:57,517 INFO L158 Benchmark]: Boogie Preprocessor took 28.20ms. Allocated memory is still 201.3MB. Free memory was 115.6MB in the beginning and 113.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:19:57,517 INFO L158 Benchmark]: RCFGBuilder took 822.52ms. Allocated memory is still 201.3MB. Free memory was 113.2MB in the beginning and 88.5MB in the end (delta: 24.7MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. [2022-12-14 14:19:57,517 INFO L158 Benchmark]: TraceAbstraction took 299.31ms. Allocated memory is still 201.3MB. Free memory was 87.5MB in the beginning and 61.2MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-12-14 14:19:57,518 INFO L158 Benchmark]: Witness Printer took 6.06ms. Allocated memory is still 201.3MB. Free memory was 61.2MB in the beginning and 170.9MB in the end (delta: -109.6MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2022-12-14 14:19:57,520 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 100.7MB. Free memory was 65.0MB in the beginning and 64.9MB in the end (delta: 113.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.37ms. Allocated memory is still 201.3MB. Free memory was 138.3MB in the beginning and 119.8MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.56ms. Allocated memory is still 201.3MB. Free memory was 119.8MB in the beginning and 115.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.20ms. Allocated memory is still 201.3MB. Free memory was 115.6MB in the beginning and 113.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 822.52ms. Allocated memory is still 201.3MB. Free memory was 113.2MB in the beginning and 88.5MB in the end (delta: 24.7MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. * TraceAbstraction took 299.31ms. Allocated memory is still 201.3MB. Free memory was 87.5MB in the beginning and 61.2MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 6.06ms. Allocated memory is still 201.3MB. Free memory was 61.2MB in the beginning and 170.9MB in the end (delta: -109.6MB). Peak memory consumption was 2.6MB. 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 165, overapproximation of bitwiseOr at line 163, overapproximation of bitwiseAnd at line 150. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 8); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L31] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 32); [L32] const SORT_10 msb_SORT_10 = (SORT_10)1 << (32 - 1); [L34] const SORT_33 mask_SORT_33 = (SORT_33)-1 >> (sizeof(SORT_33) * 8 - 4); [L35] const SORT_33 msb_SORT_33 = (SORT_33)1 << (4 - 1); [L37] const SORT_69 mask_SORT_69 = (SORT_69)-1 >> (sizeof(SORT_69) * 8 - 10); [L38] const SORT_69 msb_SORT_69 = (SORT_69)1 << (10 - 1); [L40] const SORT_3 var_7 = 0; [L41] const SORT_10 var_12 = 0; [L42] const SORT_1 var_14 = 0; [L43] const SORT_10 var_18 = 1; [L44] const SORT_1 var_23 = 1; [L45] const SORT_69 var_70 = 0; [L46] const SORT_10 var_113 = 104; [L48] SORT_1 input_2; [L49] SORT_3 input_4; [L50] SORT_1 input_5; [L51] SORT_1 input_6; [L52] SORT_1 input_31; [L53] SORT_33 input_34; [L54] SORT_1 input_36; [L55] SORT_33 input_38; [L56] SORT_1 input_40; [L57] SORT_1 input_42; [L58] SORT_1 input_48; [L59] SORT_1 input_50; [L60] SORT_1 input_52; [L61] SORT_1 input_57; [L62] SORT_1 input_67; [L63] SORT_3 input_75; [L64] SORT_1 input_82; [L65] SORT_1 input_89; [L66] SORT_1 input_95; [L67] SORT_1 input_101; [L68] SORT_1 input_107; [L69] SORT_1 input_108; [L70] SORT_1 input_109; [L71] SORT_1 input_126; [L72] SORT_69 input_136; [L73] SORT_1 input_144; [L74] SORT_1 input_145; [L75] SORT_1 input_146; [L77] SORT_3 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L78] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_44 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_46 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_54 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_69 state_71 = __VERIFIER_nondet_ushort() & mask_SORT_69; [L89] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_3 init_9_arg_1 = var_7; [L92] state_8 = init_9_arg_1 [L93] SORT_1 init_16_arg_1 = var_14; [L94] state_15 = init_16_arg_1 [L95] SORT_1 init_28_arg_1 = var_14; [L96] state_27 = init_28_arg_1 [L97] SORT_1 init_30_arg_1 = var_14; [L98] state_29 = init_30_arg_1 [L99] SORT_1 init_45_arg_1 = var_14; [L100] state_44 = init_45_arg_1 [L101] SORT_1 init_47_arg_1 = var_14; [L102] state_46 = init_47_arg_1 [L103] SORT_1 init_55_arg_1 = var_23; [L104] state_54 = init_55_arg_1 [L105] SORT_1 init_60_arg_1 = var_14; [L106] state_59 = init_60_arg_1 [L107] SORT_1 init_62_arg_1 = var_14; [L108] state_61 = init_62_arg_1 [L109] SORT_1 init_64_arg_1 = var_14; [L110] state_63 = init_64_arg_1 [L111] SORT_1 init_66_arg_1 = var_14; [L112] state_65 = init_66_arg_1 [L113] SORT_69 init_72_arg_1 = var_70; [L114] state_71 = init_72_arg_1 [L115] SORT_1 init_74_arg_1 = var_14; [L116] state_73 = init_74_arg_1 VAL [init_16_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_45_arg_1=0, init_47_arg_1=0, init_55_arg_1=1, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_10=4294967295, mask_SORT_3=255, mask_SORT_33=15, mask_SORT_69=1023, msb_SORT_1=1, msb_SORT_10=2147483648, msb_SORT_3=128, msb_SORT_33=8, msb_SORT_69=512, state_15=0, state_27=0, state_29=0, state_44=0, state_46=0, state_54=1, state_59=0, state_61=0, state_63=0, state_65=0, state_71=0, state_73=0, state_8=0, var_113=104, var_12=0, var_14=0, var_18=1, var_23=1, var_7=0, var_70=0] [L119] input_2 = __VERIFIER_nondet_uchar() [L120] input_4 = __VERIFIER_nondet_uchar() [L121] input_5 = __VERIFIER_nondet_uchar() [L122] input_6 = __VERIFIER_nondet_uchar() [L123] input_31 = __VERIFIER_nondet_uchar() [L124] input_34 = __VERIFIER_nondet_uchar() [L125] input_36 = __VERIFIER_nondet_uchar() [L126] input_38 = __VERIFIER_nondet_uchar() [L127] input_40 = __VERIFIER_nondet_uchar() [L128] input_42 = __VERIFIER_nondet_uchar() [L129] input_48 = __VERIFIER_nondet_uchar() [L130] input_50 = __VERIFIER_nondet_uchar() [L131] input_52 = __VERIFIER_nondet_uchar() [L132] input_57 = __VERIFIER_nondet_uchar() [L133] input_67 = __VERIFIER_nondet_uchar() [L134] input_75 = __VERIFIER_nondet_uchar() [L135] input_82 = __VERIFIER_nondet_uchar() [L136] input_89 = __VERIFIER_nondet_uchar() [L137] input_95 = __VERIFIER_nondet_uchar() [L138] input_101 = __VERIFIER_nondet_uchar() [L139] input_107 = __VERIFIER_nondet_uchar() [L140] input_108 = __VERIFIER_nondet_uchar() [L141] input_109 = __VERIFIER_nondet_uchar() [L142] input_126 = __VERIFIER_nondet_uchar() [L143] input_136 = __VERIFIER_nondet_ushort() [L144] input_144 = __VERIFIER_nondet_uchar() [L145] input_145 = __VERIFIER_nondet_uchar() [L146] input_146 = __VERIFIER_nondet_uchar() [L149] SORT_3 var_11_arg_0 = state_8; [L150] var_11_arg_0 = var_11_arg_0 & mask_SORT_3 [L151] SORT_10 var_11 = var_11_arg_0; [L152] SORT_10 var_13_arg_0 = var_11; [L153] SORT_10 var_13_arg_1 = var_12; [L154] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L155] SORT_1 var_17_arg_0 = state_15; [L156] var_17_arg_0 = var_17_arg_0 & mask_SORT_1 [L157] SORT_10 var_17 = var_17_arg_0; [L158] SORT_10 var_19_arg_0 = var_17; [L159] SORT_10 var_19_arg_1 = var_18; [L160] SORT_1 var_19 = var_19_arg_0 == var_19_arg_1; [L161] SORT_1 var_20_arg_0 = var_13; [L162] SORT_1 var_20_arg_1 = var_19; [L163] SORT_1 var_20 = var_20_arg_0 | var_20_arg_1; [L164] SORT_1 var_24_arg_0 = var_20; [L165] SORT_1 var_24 = ~var_24_arg_0; [L166] SORT_1 var_25_arg_0 = var_23; [L167] SORT_1 var_25_arg_1 = var_24; [L168] SORT_1 var_25 = var_25_arg_0 & var_25_arg_1; [L169] var_25 = var_25 & mask_SORT_1 [L170] SORT_1 bad_26_arg_0 = var_25; [L171] CALL __VERIFIER_assert(!(bad_26_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: 0.2s, 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 [2022-12-14 14:19:57,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/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_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3eb113140124fef67732f40fc61a49bd06a18a65880ac225aa4f334e11de8939 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:19:59,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:19:59,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:19:59,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:19:59,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:19:59,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:19:59,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:19:59,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:19:59,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:19:59,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:19:59,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:19:59,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:19:59,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:19:59,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:19:59,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:19:59,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:19:59,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:19:59,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:19:59,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:19:59,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:19:59,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:19:59,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:19:59,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:19:59,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:19:59,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:19:59,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:19:59,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:19:59,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:19:59,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:19:59,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:19:59,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:19:59,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:19:59,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:19:59,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:19:59,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:19:59,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:19:59,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:19:59,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:19:59,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:19:59,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:19:59,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:19:59,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 14:19:59,173 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:19:59,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:19:59,174 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:19:59,174 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:19:59,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:19:59,175 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:19:59,175 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:19:59,175 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:19:59,175 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:19:59,175 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:19:59,175 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:19:59,176 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:19:59,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:19:59,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:19:59,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:19:59,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:19:59,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:19:59,177 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:19:59,177 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 14:19:59,177 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 14:19:59,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:19:59,178 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:19:59,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:19:59,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:19:59,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 14:19:59,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:19:59,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:19:59,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:19:59,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:19:59,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:19:59,179 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 14:19:59,179 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 14:19:59,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:19:59,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:19:59,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 14:19:59,180 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_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3eb113140124fef67732f40fc61a49bd06a18a65880ac225aa4f334e11de8939 [2022-12-14 14:19:59,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:19:59,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:19:59,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:19:59,406 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:19:59,407 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:19:59,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c [2022-12-14 14:20:01,991 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:20:02,191 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:20:02,192 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c [2022-12-14 14:20:02,198 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/data/4d9b7fc50/263449d19b7441f19806b87612580635/FLAGe793b8c5d [2022-12-14 14:20:02,545 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/data/4d9b7fc50/263449d19b7441f19806b87612580635 [2022-12-14 14:20:02,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:20:02,549 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:20:02,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:20:02,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:20:02,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:20:02,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:20:02" (1/1) ... [2022-12-14 14:20:02,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bd62cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:20:02, skipping insertion in model container [2022-12-14 14:20:02,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:20:02" (1/1) ... [2022-12-14 14:20:02,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:20:02,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:20:02,692 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c[1107,1120] [2022-12-14 14:20:02,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:20:02,762 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:20:02,770 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c[1107,1120] [2022-12-14 14:20:02,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:20:02,820 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:20:02,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:20:02 WrapperNode [2022-12-14 14:20:02,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:20:02,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:20:02,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:20:02,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:20:02,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:20:02" (1/1) ... [2022-12-14 14:20:02,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:20:02" (1/1) ... [2022-12-14 14:20:02,865 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 421 [2022-12-14 14:20:02,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:20:02,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:20:02,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:20:02,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:20:02,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:20:02" (1/1) ... [2022-12-14 14:20:02,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:20:02" (1/1) ... [2022-12-14 14:20:02,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:20:02" (1/1) ... [2022-12-14 14:20:02,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:20:02" (1/1) ... [2022-12-14 14:20:02,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:20:02" (1/1) ... [2022-12-14 14:20:02,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:20:02" (1/1) ... [2022-12-14 14:20:02,891 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:20:02" (1/1) ... [2022-12-14 14:20:02,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:20:02" (1/1) ... [2022-12-14 14:20:02,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:20:02,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:20:02,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:20:02,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:20:02,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:20:02" (1/1) ... [2022-12-14 14:20:02,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:20:02,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:20:02,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:20:02,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:20:02,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:20:02,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:20:03,074 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:20:03,075 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:20:03,354 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:20:03,359 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:20:03,359 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:20:03,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:20:03 BoogieIcfgContainer [2022-12-14 14:20:03,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:20:03,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:20:03,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:20:03,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:20:03,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:20:02" (1/3) ... [2022-12-14 14:20:03,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520f620b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:20:03, skipping insertion in model container [2022-12-14 14:20:03,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:20:02" (2/3) ... [2022-12-14 14:20:03,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520f620b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:20:03, skipping insertion in model container [2022-12-14 14:20:03,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:20:03" (3/3) ... [2022-12-14 14:20:03,368 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p22.c [2022-12-14 14:20:03,381 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:20:03,381 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:20:03,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:20:03,419 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;@72c21281, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:20:03,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:20:03,422 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) [2022-12-14 14:20:03,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 14:20:03,426 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:20:03,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 14:20:03,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:20:03,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:20:03,431 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 14:20:03,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:20:03,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863463801] [2022-12-14 14:20:03,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:20:03,440 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 [2022-12-14 14:20:03,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:20:03,441 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/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) [2022-12-14 14:20:03,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/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 [2022-12-14 14:20:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:20:03,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-14 14:20:03,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:20:03,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:20:03,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:20:03,669 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:20:03,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863463801] [2022-12-14 14:20:03,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863463801] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:20:03,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:20:03,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:20:03,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097234674] [2022-12-14 14:20:03,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:20:03,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:20:03,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:20:03,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:20:03,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:20:03,698 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) [2022-12-14 14:20:03,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:20:03,763 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 14:20:03,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:20:03,765 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 [2022-12-14 14:20:03,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:20:03,771 INFO L225 Difference]: With dead ends: 20 [2022-12-14 14:20:03,771 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 14:20:03,773 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 [2022-12-14 14:20:03,775 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 [2022-12-14 14:20:03,776 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] [2022-12-14 14:20:03,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 14:20:03,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 14:20:03,796 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) [2022-12-14 14:20:03,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 14:20:03,797 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 14:20:03,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:20:03,797 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 14:20:03,798 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) [2022-12-14 14:20:03,798 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 14:20:03,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 14:20:03,798 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:20:03,798 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 14:20:03,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/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 [2022-12-14 14:20:03,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/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 [2022-12-14 14:20:03,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:20:04,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:20:04,000 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 14:20:04,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:20:04,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113902792] [2022-12-14 14:20:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:20:04,001 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 [2022-12-14 14:20:04,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:20:04,002 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/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) [2022-12-14 14:20:04,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/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 [2022-12-14 14:20:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:20:04,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 14:20:04,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:20:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:20:04,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:20:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:20:04,650 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:20:04,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113902792] [2022-12-14 14:20:04,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113902792] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:20:04,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [117820021] [2022-12-14 14:20:04,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:20:04,651 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 14:20:04,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 14:20:04,672 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 14:20:04,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 14:20:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:20:04,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 14:20:04,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:20:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:20:05,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:20:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:20:05,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [117820021] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:20:05,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988387335] [2022-12-14 14:20:05,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:20:05,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:20:05,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:20:05,195 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:20:05,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:20:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:20:05,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-14 14:20:05,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:20:05,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:20:05,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:20:05,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:20:05,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988387335] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:20:05,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 14:20:05,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-12-14 14:20:05,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521428331] [2022-12-14 14:20:05,643 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 14:20:05,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 14:20:05,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:20:05,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 14:20:05,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-14 14:20:05,645 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:20:05,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:20:05,767 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-14 14:20:05,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 14:20:05,767 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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 [2022-12-14 14:20:05,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:20:05,768 INFO L225 Difference]: With dead ends: 16 [2022-12-14 14:20:05,768 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 14:20:05,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-12-14 14:20:05,770 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:20:05,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 16 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:20:05,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 14:20:05,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-12-14 14:20:05,773 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) [2022-12-14 14:20:05,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-12-14 14:20:05,774 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-12-14 14:20:05,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:20:05,774 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-12-14 14:20:05,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:20:05,774 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-12-14 14:20:05,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 14:20:05,775 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:20:05,775 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 14:20:05,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 14:20:05,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 14:20:06,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 14:20:06,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 14:20:06,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:20:06,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:20:06,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-12-14 14:20:06,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:20:06,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850935531] [2022-12-14 14:20:06,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 14:20:06,384 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 [2022-12-14 14:20:06,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:20:06,385 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/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) [2022-12-14 14:20:06,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/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 [2022-12-14 14:20:06,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 14:20:06,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:20:06,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-14 14:20:06,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:20:06,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:20:06,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:20:08,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:20:08,457 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:20:08,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850935531] [2022-12-14 14:20:08,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850935531] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:20:08,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [17670968] [2022-12-14 14:20:08,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 14:20:08,458 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 14:20:08,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 14:20:08,459 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 14:20:08,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 14:20:08,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 14:20:08,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:20:08,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-14 14:20:08,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:20:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:20:08,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:20:09,756 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:20:09,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [17670968] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:20:09,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945789119] [2022-12-14 14:20:09,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 14:20:09,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:20:09,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:20:09,758 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:20:09,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 14:20:09,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 14:20:09,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:20:09,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 56 conjunts are in the unsatisfiable core [2022-12-14 14:20:09,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:20:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:20:10,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:20:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:20:10,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945789119] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:20:10,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 14:20:10,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 12 [2022-12-14 14:20:10,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880911230] [2022-12-14 14:20:10,776 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 14:20:10,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 14:20:10,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:20:10,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 14:20:10,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-14 14:20:10,777 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:20:10,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:20:10,910 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-12-14 14:20:10,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 14:20:10,911 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 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 [2022-12-14 14:20:10,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:20:10,911 INFO L225 Difference]: With dead ends: 19 [2022-12-14 14:20:10,911 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 14:20:10,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2022-12-14 14:20:10,912 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:20:10,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 19 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:20:10,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 14:20:10,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-12-14 14:20:10,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:20:10,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-14 14:20:10,915 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-12-14 14:20:10,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:20:10,915 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-14 14:20:10,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:20:10,915 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-14 14:20:10,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 14:20:10,915 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:20:10,915 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-12-14 14:20:10,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 14:20:11,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/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)] Ended with exit code 0 [2022-12-14 14:20:11,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-12-14 14:20:11,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 14:20:11,517 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:20:11,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:20:11,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-12-14 14:20:11,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:20:11,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764371225] [2022-12-14 14:20:11,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:20:11,522 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 [2022-12-14 14:20:11,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:20:11,523 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/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) [2022-12-14 14:20:11,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/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 (9)] Waiting until timeout for monitored process [2022-12-14 14:20:11,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 14:20:11,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:20:11,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 74 conjunts are in the unsatisfiable core [2022-12-14 14:20:11,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:20:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 14:20:12,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:20:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 14:20:15,206 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:20:15,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764371225] [2022-12-14 14:20:15,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764371225] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:20:15,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1935162152] [2022-12-14 14:20:15,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:20:15,206 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 14:20:15,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 14:20:15,207 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 14:20:15,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-12-14 14:20:15,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 14:20:15,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:20:15,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 71 conjunts are in the unsatisfiable core [2022-12-14 14:20:15,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:20:16,349 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 14:20:16,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:20:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 14:20:17,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1935162152] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:20:17,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266883352] [2022-12-14 14:20:17,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:20:17,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:20:17,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:20:17,877 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:20:17,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 14:20:18,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 14:20:18,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:20:18,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 71 conjunts are in the unsatisfiable core [2022-12-14 14:20:18,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:20:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 14:20:18,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:20:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 14:20:19,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266883352] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:20:19,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 14:20:19,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7, 7, 7, 7] total 18 [2022-12-14 14:20:19,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014907976] [2022-12-14 14:20:19,747 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 14:20:19,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 14:20:19,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:20:19,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 14:20:19,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-12-14 14:20:19,749 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:20:19,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:20:19,867 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-12-14 14:20:19,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:20:19,868 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 14:20:19,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:20:19,868 INFO L225 Difference]: With dead ends: 15 [2022-12-14 14:20:19,868 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 14:20:19,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 55 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-12-14 14:20:19,869 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:20:19,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 10 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:20:19,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 14:20:19,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 14:20:19,870 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) [2022-12-14 14:20:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 14:20:19,870 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-12-14 14:20:19,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:20:19,870 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 14:20:19,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:20:19,871 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 14:20:19,871 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 14:20:19,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 14:20:19,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 14:20:20,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-12-14 14:20:20,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/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 (9)] Ended with exit code 0 [2022-12-14 14:20:20,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/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 [2022-12-14 14:20:20,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 14:20:20,700 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 14:20:20,700 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 14:20:20,700 INFO L895 garLoopResultBuilder]: At program point main_returnLabel#1(lines 22 408) the Hoare annotation is: false [2022-12-14 14:20:20,700 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-14 14:20:20,700 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-14 14:20:20,700 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-12-14 14:20:20,700 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-12-14 14:20:20,701 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-12-14 14:20:20,701 INFO L895 garLoopResultBuilder]: At program point L117-2(lines 117 406) the Hoare annotation is: (let ((.cse0 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse1 (= (_ bv1 8) |ULTIMATE.start_main_~var_23~0#1|)) (.cse2 (= |ULTIMATE.start_main_~var_18~0#1| (_ bv1 32))) (.cse4 (= |ULTIMATE.start_main_~var_12~0#1| (_ bv0 32))) (.cse5 (= (_ bv0 8) (bvadd (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_3~0#1|)))) (or (let ((.cse3 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_1~0#1|))) (and .cse0 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse1 .cse2 (exists ((|ULTIMATE.start_main_~var_105_arg_1~0#1| (_ BitVec 8))) (= ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_105_arg_1~0#1|))) .cse3)) |ULTIMATE.start_main_~state_46~0#1|)) (or (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~state_8~0#1|) ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_3~0#1|)))) |ULTIMATE.start_main_~var_12~0#1|) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~state_15~0#1|) .cse3))) |ULTIMATE.start_main_~var_18~0#1|)) .cse4 .cse5)) (and .cse0 (= |ULTIMATE.start_main_~var_14~0#1| |ULTIMATE.start_main_~state_27~0#1|) (= |ULTIMATE.start_main_~state_8~0#1| (_ bv0 8)) (= |ULTIMATE.start_main_~var_14~0#1| |ULTIMATE.start_main_~state_65~0#1|) .cse1 (= (_ bv0 8) |ULTIMATE.start_main_~state_46~0#1|) (= |ULTIMATE.start_main_~var_14~0#1| |ULTIMATE.start_main_~state_46~0#1|) (= (_ bv1 8) |ULTIMATE.start_main_~state_54~0#1|) .cse2 (= |ULTIMATE.start_main_~var_14~0#1| |ULTIMATE.start_main_~state_44~0#1|) .cse4 .cse5))) [2022-12-14 14:20:20,701 INFO L899 garLoopResultBuilder]: For program point L117-3(lines 117 406) no Hoare annotation was computed. [2022-12-14 14:20:20,701 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-12-14 14:20:20,704 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2022-12-14 14:20:20,705 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:20:20,710 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_105_arg_1~0#1,QUANTIFIED] [2022-12-14 14:20:20,714 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_105_arg_1~0#1,QUANTIFIED] [2022-12-14 14:20:20,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:20:20 BoogieIcfgContainer [2022-12-14 14:20:20,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:20:20,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:20:20,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:20:20,716 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:20:20,716 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:20:03" (3/4) ... [2022-12-14 14:20:20,718 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 14:20:20,727 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-12-14 14:20:20,727 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 14:20:20,727 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 14:20:20,745 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((1bv8 == mask_SORT_1 && cond == 1bv32) && 1bv8 == var_23) && var_18 == 1bv32) && (\exists ULTIMATE.start_main_~var_105_arg_1~0#1 : bv8 :: ~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(ULTIMATE.start_main_~var_105_arg_1~0#1)[7:0]), ~zero_extendFrom16To32(mask_SORT_1))[7:0] == state_46)) && (~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(state_8), ~zero_extendFrom16To32(mask_SORT_3))[7:0]) == var_12 || ~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(state_15), ~zero_extendFrom16To32(mask_SORT_1))[7:0]) == var_18)) && var_12 == 0bv32) && 0bv8 == ~bvadd128(1bv8, mask_SORT_3)) || (((((((((((1bv8 == mask_SORT_1 && var_14 == state_27) && state_8 == 0bv8) && var_14 == state_65) && 1bv8 == var_23) && 0bv8 == state_46) && var_14 == state_46) && 1bv8 == state_54) && var_18 == 1bv32) && var_14 == state_44) && var_12 == 0bv32) && 0bv8 == ~bvadd128(1bv8, mask_SORT_3)) [2022-12-14 14:20:20,768 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 14:20:20,768 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:20:20,768 INFO L158 Benchmark]: Toolchain (without parser) took 18219.69ms. Allocated memory was 92.3MB in the beginning and 161.5MB in the end (delta: 69.2MB). Free memory was 70.3MB in the beginning and 114.5MB in the end (delta: -44.2MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2022-12-14 14:20:20,769 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 56.6MB. Free memory is still 35.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:20:20,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.26ms. Allocated memory is still 92.3MB. Free memory was 70.3MB in the beginning and 51.7MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 14:20:20,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.37ms. Allocated memory is still 92.3MB. Free memory was 51.7MB in the beginning and 70.9MB in the end (delta: -19.3MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2022-12-14 14:20:20,769 INFO L158 Benchmark]: Boogie Preprocessor took 29.97ms. Allocated memory is still 92.3MB. Free memory was 70.9MB in the beginning and 68.4MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 14:20:20,769 INFO L158 Benchmark]: RCFGBuilder took 465.08ms. Allocated memory is still 92.3MB. Free memory was 68.4MB in the beginning and 59.8MB in the end (delta: 8.6MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. [2022-12-14 14:20:20,770 INFO L158 Benchmark]: TraceAbstraction took 17352.66ms. Allocated memory was 92.3MB in the beginning and 161.5MB in the end (delta: 69.2MB). Free memory was 59.1MB in the beginning and 121.9MB in the end (delta: -62.8MB). Peak memory consumption was 88.8MB. Max. memory is 16.1GB. [2022-12-14 14:20:20,770 INFO L158 Benchmark]: Witness Printer took 52.42ms. Allocated memory is still 161.5MB. Free memory was 121.9MB in the beginning and 114.5MB in the end (delta: 7.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-14 14:20:20,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 56.6MB. Free memory is still 35.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.26ms. Allocated memory is still 92.3MB. Free memory was 70.3MB in the beginning and 51.7MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.37ms. Allocated memory is still 92.3MB. Free memory was 51.7MB in the beginning and 70.9MB in the end (delta: -19.3MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.97ms. Allocated memory is still 92.3MB. Free memory was 70.9MB in the beginning and 68.4MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 465.08ms. Allocated memory is still 92.3MB. Free memory was 68.4MB in the beginning and 59.8MB in the end (delta: 8.6MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. * TraceAbstraction took 17352.66ms. Allocated memory was 92.3MB in the beginning and 161.5MB in the end (delta: 69.2MB). Free memory was 59.1MB in the beginning and 121.9MB in the end (delta: -62.8MB). Peak memory consumption was 88.8MB. Max. memory is 16.1GB. * Witness Printer took 52.42ms. Allocated memory is still 161.5MB. Free memory was 121.9MB in the beginning and 114.5MB in the end (delta: 7.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_105_arg_1~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_105_arg_1~0#1,QUANTIFIED] * 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: 17.3s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 58 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 43 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60 IncrementalHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 15 mSDtfsCounter, 60 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 131 SyntacticMatches, 17 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=3, InterpolantAutomatonStates: 25, 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 92 HoareAnnotationTreeSize, 2 FomulaSimplifications, 34 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 144 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 104 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 184 ConstructedInterpolants, 69 QuantifiedInterpolants, 9927 SizeOfPredicates, 501 NumberOfNonLiveVariables, 4990 ConjunctsInSsa, 488 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 40/144 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: 117]: Loop Invariant [2022-12-14 14:20:20,776 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_105_arg_1~0#1,QUANTIFIED] [2022-12-14 14:20:20,777 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_105_arg_1~0#1,QUANTIFIED] Derived loop invariant: (((((((1bv8 == mask_SORT_1 && cond == 1bv32) && 1bv8 == var_23) && var_18 == 1bv32) && (\exists ULTIMATE.start_main_~var_105_arg_1~0#1 : bv8 :: ~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(ULTIMATE.start_main_~var_105_arg_1~0#1)[7:0]), ~zero_extendFrom16To32(mask_SORT_1))[7:0] == state_46)) && (~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(state_8), ~zero_extendFrom16To32(mask_SORT_3))[7:0]) == var_12 || ~zero_extendFrom16To32(~bvand32(~zero_extendFrom16To32(state_15), ~zero_extendFrom16To32(mask_SORT_1))[7:0]) == var_18)) && var_12 == 0bv32) && 0bv8 == ~bvadd128(1bv8, mask_SORT_3)) || (((((((((((1bv8 == mask_SORT_1 && var_14 == state_27) && state_8 == 0bv8) && var_14 == state_65) && 1bv8 == var_23) && 0bv8 == state_46) && var_14 == state_46) && 1bv8 == state_54) && var_18 == 1bv32) && var_14 == state_44) && var_12 == 0bv32) && 0bv8 == ~bvadd128(1bv8, mask_SORT_3)) RESULT: Ultimate proved your program to be correct! [2022-12-14 14:20:20,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d2444f-a961-477a-b331-1cb4227db6a5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE