./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW --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 ae120e442d3333a3829560b2dc4c79b941b2f5347f398389c9ef7ff85802ce4e --- 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-4e7fbc6 [2022-11-23 15:10:12,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:10:12,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:10:12,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:10:12,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:10:12,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:10:12,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:10:12,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:10:12,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:10:12,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:10:12,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:10:12,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:10:12,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:10:12,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:10:12,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:10:12,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:10:12,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:10:12,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:10:12,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:10:12,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:10:12,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:10:12,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:10:12,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:10:12,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:10:13,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:10:13,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:10:13,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:10:13,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:10:13,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:10:13,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:10:13,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:10:13,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:10:13,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:10:13,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:10:13,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:10:13,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:10:13,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:10:13,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:10:13,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:10:13,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:10:13,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:10:13,023 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:10:13,072 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:10:13,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:10:13,073 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:10:13,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:10:13,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:10:13,075 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:10:13,076 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:10:13,076 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:10:13,077 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:10:13,077 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:10:13,078 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:10:13,079 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:10:13,079 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:10:13,079 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:10:13,080 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:10:13,080 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:10:13,080 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:10:13,081 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:10:13,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:10:13,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:10:13,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:10:13,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:10:13,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:10:13,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:10:13,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:10:13,085 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:10:13,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:10:13,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:10:13,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:10:13,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:10:13,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:10:13,088 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:10:13,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:10:13,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:10:13,089 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:10:13,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:10:13,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:10:13,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:10:13,090 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_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae120e442d3333a3829560b2dc4c79b941b2f5347f398389c9ef7ff85802ce4e [2022-11-23 15:10:13,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:10:13,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:10:13,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:10:13,424 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:10:13,424 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:10:13,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c [2022-11-23 15:10:16,789 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:10:17,041 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:10:17,042 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c [2022-11-23 15:10:17,053 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/data/89035213c/d652a2f8fbce4ca5bd65e513e165d09d/FLAG2d3a06177 [2022-11-23 15:10:17,082 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/data/89035213c/d652a2f8fbce4ca5bd65e513e165d09d [2022-11-23 15:10:17,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:10:17,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:10:17,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:10:17,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:10:17,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:10:17,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:10:17" (1/1) ... [2022-11-23 15:10:17,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@230a3d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:17, skipping insertion in model container [2022-11-23 15:10:17,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:10:17" (1/1) ... [2022-11-23 15:10:17,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:10:17,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:10:17,382 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_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c[1107,1120] [2022-11-23 15:10:17,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:10:17,623 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:10:17,634 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_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c[1107,1120] [2022-11-23 15:10:17,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:10:17,733 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:10:17,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:17 WrapperNode [2022-11-23 15:10:17,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:10:17,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:10:17,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:10:17,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:10:17,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:17" (1/1) ... [2022-11-23 15:10:17,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:17" (1/1) ... [2022-11-23 15:10:17,870 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 978 [2022-11-23 15:10:17,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:10:17,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:10:17,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:10:17,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:10:17,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:17" (1/1) ... [2022-11-23 15:10:17,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:17" (1/1) ... [2022-11-23 15:10:17,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:17" (1/1) ... [2022-11-23 15:10:17,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:17" (1/1) ... [2022-11-23 15:10:17,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:17" (1/1) ... [2022-11-23 15:10:17,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:17" (1/1) ... [2022-11-23 15:10:17,958 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:17" (1/1) ... [2022-11-23 15:10:17,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:17" (1/1) ... [2022-11-23 15:10:17,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:10:17,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:10:17,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:10:17,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:10:17,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:17" (1/1) ... [2022-11-23 15:10:17,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:10:18,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:10:18,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:10:18,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:10:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:10:18,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:10:18,353 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:10:18,355 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:10:24,959 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:10:24,984 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:10:24,984 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:10:24,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:10:24 BoogieIcfgContainer [2022-11-23 15:10:24,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:10:24,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:10:24,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:10:24,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:10:24,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:10:17" (1/3) ... [2022-11-23 15:10:24,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77611d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:10:24, skipping insertion in model container [2022-11-23 15:10:24,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:17" (2/3) ... [2022-11-23 15:10:24,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77611d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:10:24, skipping insertion in model container [2022-11-23 15:10:24,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:10:24" (3/3) ... [2022-11-23 15:10:24,996 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.miim.c [2022-11-23 15:10:25,015 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:10:25,016 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:10:25,062 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:10:25,069 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;@869e2a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:10:25,070 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:10:25,074 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:10:25,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 15:10:25,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:25,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 15:10:25,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:25,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:25,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-23 15:10:25,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:25,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370553584] [2022-11-23 15:10:25,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:25,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:10:25,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:10:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:10:25,751 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:10:25,753 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:10:25,755 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:10:25,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:10:25,762 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 15:10:25,766 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:10:25,799 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 15:10:25,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:10:25 BoogieIcfgContainer [2022-11-23 15:10:25,822 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:10:25,824 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:10:25,824 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:10:25,825 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:10:25,826 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:10:24" (3/4) ... [2022-11-23 15:10:25,830 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:10:25,830 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:10:25,832 INFO L158 Benchmark]: Toolchain (without parser) took 8742.64ms. Allocated memory was 155.2MB in the beginning and 679.5MB in the end (delta: 524.3MB). Free memory was 110.4MB in the beginning and 372.7MB in the end (delta: -262.3MB). Peak memory consumption was 262.6MB. Max. memory is 16.1GB. [2022-11-23 15:10:25,833 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 115.3MB. Free memory was 83.6MB in the beginning and 83.6MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:10:25,834 INFO L158 Benchmark]: CACSL2BoogieTranslator took 640.73ms. Allocated memory is still 155.2MB. Free memory was 109.7MB in the beginning and 79.5MB in the end (delta: 30.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-23 15:10:25,835 INFO L158 Benchmark]: Boogie Procedure Inliner took 143.64ms. Allocated memory is still 155.2MB. Free memory was 79.5MB in the beginning and 71.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 15:10:25,840 INFO L158 Benchmark]: Boogie Preprocessor took 93.35ms. Allocated memory is still 155.2MB. Free memory was 71.1MB in the beginning and 117.7MB in the end (delta: -46.6MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2022-11-23 15:10:25,841 INFO L158 Benchmark]: RCFGBuilder took 7013.94ms. Allocated memory was 155.2MB in the beginning and 679.5MB in the end (delta: 524.3MB). Free memory was 117.7MB in the beginning and 426.1MB in the end (delta: -308.4MB). Peak memory consumption was 411.1MB. Max. memory is 16.1GB. [2022-11-23 15:10:25,842 INFO L158 Benchmark]: TraceAbstraction took 833.24ms. Allocated memory is still 679.5MB. Free memory was 426.1MB in the beginning and 373.7MB in the end (delta: 52.5MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2022-11-23 15:10:25,843 INFO L158 Benchmark]: Witness Printer took 6.77ms. Allocated memory is still 679.5MB. Free memory was 373.7MB in the beginning and 372.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:10:25,849 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 115.3MB. Free memory was 83.6MB in the beginning and 83.6MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 640.73ms. Allocated memory is still 155.2MB. Free memory was 109.7MB in the beginning and 79.5MB in the end (delta: 30.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 143.64ms. Allocated memory is still 155.2MB. Free memory was 79.5MB in the beginning and 71.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.35ms. Allocated memory is still 155.2MB. Free memory was 71.1MB in the beginning and 117.7MB in the end (delta: -46.6MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * RCFGBuilder took 7013.94ms. Allocated memory was 155.2MB in the beginning and 679.5MB in the end (delta: 524.3MB). Free memory was 117.7MB in the beginning and 426.1MB in the end (delta: -308.4MB). Peak memory consumption was 411.1MB. Max. memory is 16.1GB. * TraceAbstraction took 833.24ms. Allocated memory is still 679.5MB. Free memory was 426.1MB in the beginning and 373.7MB in the end (delta: 52.5MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Witness Printer took 6.77ms. Allocated memory is still 679.5MB. Free memory was 373.7MB in the beginning and 372.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 295, overapproximation of bitwiseOr at line 298, overapproximation of bitwiseAnd at line 222. 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 - 16); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (16 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 8); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (8 - 1); [L34] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 5); [L35] const SORT_7 msb_SORT_7 = (SORT_7)1 << (5 - 1); [L37] const SORT_20 mask_SORT_20 = (SORT_20)-1 >> (sizeof(SORT_20) * 8 - 32); [L38] const SORT_20 msb_SORT_20 = (SORT_20)1 << (32 - 1); [L40] const SORT_51 mask_SORT_51 = (SORT_51)-1 >> (sizeof(SORT_51) * 8 - 6); [L41] const SORT_51 msb_SORT_51 = (SORT_51)1 << (6 - 1); [L43] const SORT_66 mask_SORT_66 = (SORT_66)-1 >> (sizeof(SORT_66) * 8 - 25); [L44] const SORT_66 msb_SORT_66 = (SORT_66)1 << (25 - 1); [L46] const SORT_68 mask_SORT_68 = (SORT_68)-1 >> (sizeof(SORT_68) * 8 - 7); [L47] const SORT_68 msb_SORT_68 = (SORT_68)1 << (7 - 1); [L49] const SORT_88 mask_SORT_88 = (SORT_88)-1 >> (sizeof(SORT_88) * 8 - 2); [L50] const SORT_88 msb_SORT_88 = (SORT_88)1 << (2 - 1); [L52] const SORT_126 mask_SORT_126 = (SORT_126)-1 >> (sizeof(SORT_126) * 8 - 3); [L53] const SORT_126 msb_SORT_126 = (SORT_126)1 << (3 - 1); [L55] const SORT_1 var_17 = 0; [L56] const SORT_20 var_22 = 1; [L57] const SORT_1 var_47 = 1; [L58] const SORT_51 var_52 = 0; [L59] const SORT_5 var_56 = 0; [L60] const SORT_5 var_61 = 2; [L61] const SORT_20 var_63 = 2; [L62] const SORT_66 var_67 = 0; [L63] const SORT_20 var_116 = 0; [L64] const SORT_51 var_254 = 33; [L65] const SORT_5 var_273 = 1; [L67] SORT_1 input_2; [L68] SORT_3 input_4; [L69] SORT_5 input_6; [L70] SORT_7 input_8; [L71] SORT_1 input_9; [L72] SORT_1 input_10; [L73] SORT_1 input_11; [L74] SORT_1 input_12; [L75] SORT_7 input_13; [L76] SORT_1 input_14; [L77] SORT_1 input_15; [L78] SORT_1 input_16; [L79] SORT_1 input_80; [L80] SORT_88 input_89; [L81] SORT_1 input_91; [L82] SORT_1 input_93; [L83] SORT_1 input_95; [L84] SORT_1 input_99; [L85] SORT_1 input_103; [L86] SORT_1 input_105; [L87] SORT_1 input_109; [L88] SORT_1 input_138; [L89] SORT_1 input_144; [L90] SORT_1 input_153; [L91] SORT_1 input_155; [L92] SORT_1 input_157; [L93] SORT_7 input_166; [L94] SORT_1 input_168; [L95] SORT_3 input_170; [L96] SORT_5 input_172; [L97] SORT_1 input_183; [L98] SORT_1 input_185; [L99] SORT_1 input_198; [L100] SORT_1 input_200; [L101] SORT_1 input_203; [L102] SORT_1 input_210; [L103] SORT_1 input_212; [L104] SORT_1 input_215; [L105] SORT_1 input_220; [L106] SORT_1 input_228; [L107] SORT_1 input_229; [L108] SORT_1 input_231; [L109] SORT_1 input_234; [L110] SORT_1 input_238; [L111] SORT_1 input_241; [L112] SORT_1 input_246; [L113] SORT_51 input_250; [L114] SORT_51 input_251; [L115] SORT_51 input_258; [L116] SORT_51 input_262; [L117] SORT_51 input_266; [L118] SORT_51 input_269; [L119] SORT_5 input_276; [L120] SORT_1 input_283; [L121] SORT_1 input_288; [L122] SORT_1 input_293; [L123] SORT_1 input_300; [L124] SORT_1 input_308; [L125] SORT_1 input_312; [L126] SORT_1 input_313; [L127] SORT_1 input_315; [L128] SORT_1 input_318; [L129] SORT_1 input_320; [L130] SORT_1 input_321; [L131] SORT_1 input_326; [L132] SORT_1 input_330; [L133] SORT_1 input_333; [L134] SORT_1 input_338; [L135] SORT_1 input_343; [L136] SORT_1 input_352; [L137] SORT_1 input_357; [L139] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L140] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L141] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L142] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L143] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L144] SORT_1 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L145] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L146] SORT_51 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_51; [L147] SORT_5 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L148] SORT_1 state_74 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L149] SORT_1 state_84 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L150] SORT_1 state_86 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L151] SORT_1 state_97 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L152] SORT_1 state_101 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L153] SORT_1 state_107 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L154] SORT_1 state_111 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L155] SORT_1 state_140 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L156] SORT_1 state_142 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L157] SORT_1 state_146 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L158] SORT_1 state_148 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L159] SORT_1 state_174 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L160] SORT_1 state_176 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L161] SORT_1 state_187 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L162] SORT_1 state_189 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L164] SORT_1 init_19_arg_1 = var_17; [L165] state_18 = init_19_arg_1 [L166] SORT_1 init_26_arg_1 = var_17; [L167] state_25 = init_26_arg_1 [L168] SORT_1 init_28_arg_1 = var_17; [L169] state_27 = init_28_arg_1 [L170] SORT_1 init_31_arg_1 = var_17; [L171] state_30 = init_31_arg_1 [L172] SORT_1 init_34_arg_1 = var_17; [L173] state_33 = init_34_arg_1 [L174] SORT_1 init_37_arg_1 = var_17; [L175] state_36 = init_37_arg_1 [L176] SORT_1 init_40_arg_1 = var_17; [L177] state_39 = init_40_arg_1 [L178] SORT_51 init_54_arg_1 = var_52; [L179] state_53 = init_54_arg_1 [L180] SORT_5 init_58_arg_1 = var_56; [L181] state_57 = init_58_arg_1 [L182] SORT_1 init_75_arg_1 = var_17; [L183] state_74 = init_75_arg_1 [L184] SORT_1 init_85_arg_1 = var_17; [L185] state_84 = init_85_arg_1 [L186] SORT_1 init_87_arg_1 = var_17; [L187] state_86 = init_87_arg_1 [L188] SORT_1 init_98_arg_1 = var_17; [L189] state_97 = init_98_arg_1 [L190] SORT_1 init_102_arg_1 = var_17; [L191] state_101 = init_102_arg_1 [L192] SORT_1 init_108_arg_1 = var_17; [L193] state_107 = init_108_arg_1 [L194] SORT_1 init_112_arg_1 = var_17; [L195] state_111 = init_112_arg_1 [L196] SORT_1 init_141_arg_1 = var_17; [L197] state_140 = init_141_arg_1 [L198] SORT_1 init_143_arg_1 = var_17; [L199] state_142 = init_143_arg_1 [L200] SORT_1 init_147_arg_1 = var_17; [L201] state_146 = init_147_arg_1 [L202] SORT_1 init_149_arg_1 = var_17; [L203] state_148 = init_149_arg_1 [L204] SORT_1 init_175_arg_1 = var_17; [L205] state_174 = init_175_arg_1 [L206] SORT_1 init_177_arg_1 = var_17; [L207] state_176 = init_177_arg_1 [L208] SORT_1 init_188_arg_1 = var_17; [L209] state_187 = init_188_arg_1 [L210] SORT_1 init_190_arg_1 = var_17; [L211] state_189 = init_190_arg_1 VAL [init_102_arg_1=0, init_108_arg_1=0, init_112_arg_1=0, init_141_arg_1=0, init_143_arg_1=0, init_147_arg_1=0, init_149_arg_1=0, init_175_arg_1=0, init_177_arg_1=0, init_188_arg_1=0, init_190_arg_1=0, init_19_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_54_arg_1=0, init_58_arg_1=0, init_75_arg_1=0, init_85_arg_1=0, init_87_arg_1=0, init_98_arg_1=0, mask_SORT_1=1, mask_SORT_126=7, mask_SORT_20=4294967295, mask_SORT_3=65535, mask_SORT_5=255, mask_SORT_51=63, mask_SORT_66=4294967295, mask_SORT_68=127, mask_SORT_7=31, mask_SORT_88=3, msb_SORT_1=1, msb_SORT_126=4, msb_SORT_20=2147483648, msb_SORT_3=32768, msb_SORT_5=128, msb_SORT_51=32, msb_SORT_66=16777216, msb_SORT_68=64, msb_SORT_7=16, msb_SORT_88=2, state_101=0, state_107=0, state_111=0, state_140=0, state_142=0, state_146=0, state_148=0, state_174=0, state_176=0, state_18=0, state_187=0, state_189=0, state_25=0, state_27=0, state_30=0, state_33=0, state_36=0, state_39=0, state_53=0, state_57=0, state_74=0, state_84=0, state_86=0, state_97=0, var_116=0, var_17=0, var_22=1, var_254=33, var_273=1, var_47=1, var_52=0, var_56=0, var_61=2, var_63=2, var_67=0] [L214] input_2 = __VERIFIER_nondet_uchar() [L215] input_4 = __VERIFIER_nondet_ushort() [L216] input_6 = __VERIFIER_nondet_uchar() [L217] input_8 = __VERIFIER_nondet_uchar() [L218] input_9 = __VERIFIER_nondet_uchar() [L219] input_10 = __VERIFIER_nondet_uchar() [L220] input_11 = __VERIFIER_nondet_uchar() [L221] input_12 = __VERIFIER_nondet_uchar() [L222] input_12 = input_12 & mask_SORT_1 [L223] input_13 = __VERIFIER_nondet_uchar() [L224] input_14 = __VERIFIER_nondet_uchar() [L225] input_15 = __VERIFIER_nondet_uchar() [L226] input_16 = __VERIFIER_nondet_uchar() [L227] input_80 = __VERIFIER_nondet_uchar() [L228] input_89 = __VERIFIER_nondet_uchar() [L229] input_91 = __VERIFIER_nondet_uchar() [L230] input_93 = __VERIFIER_nondet_uchar() [L231] input_95 = __VERIFIER_nondet_uchar() [L232] input_99 = __VERIFIER_nondet_uchar() [L233] input_103 = __VERIFIER_nondet_uchar() [L234] input_105 = __VERIFIER_nondet_uchar() [L235] input_109 = __VERIFIER_nondet_uchar() [L236] input_138 = __VERIFIER_nondet_uchar() [L237] input_144 = __VERIFIER_nondet_uchar() [L238] input_153 = __VERIFIER_nondet_uchar() [L239] input_155 = __VERIFIER_nondet_uchar() [L240] input_157 = __VERIFIER_nondet_uchar() [L241] input_166 = __VERIFIER_nondet_uchar() [L242] input_168 = __VERIFIER_nondet_uchar() [L243] input_170 = __VERIFIER_nondet_ushort() [L244] input_172 = __VERIFIER_nondet_uchar() [L245] input_183 = __VERIFIER_nondet_uchar() [L246] input_185 = __VERIFIER_nondet_uchar() [L247] input_198 = __VERIFIER_nondet_uchar() [L248] input_200 = __VERIFIER_nondet_uchar() [L249] input_203 = __VERIFIER_nondet_uchar() [L250] input_210 = __VERIFIER_nondet_uchar() [L251] input_212 = __VERIFIER_nondet_uchar() [L252] input_215 = __VERIFIER_nondet_uchar() [L253] input_220 = __VERIFIER_nondet_uchar() [L254] input_228 = __VERIFIER_nondet_uchar() [L255] input_229 = __VERIFIER_nondet_uchar() [L256] input_231 = __VERIFIER_nondet_uchar() [L257] input_234 = __VERIFIER_nondet_uchar() [L258] input_238 = __VERIFIER_nondet_uchar() [L259] input_241 = __VERIFIER_nondet_uchar() [L260] input_246 = __VERIFIER_nondet_uchar() [L261] input_250 = __VERIFIER_nondet_uchar() [L262] input_251 = __VERIFIER_nondet_uchar() [L263] input_258 = __VERIFIER_nondet_uchar() [L264] input_262 = __VERIFIER_nondet_uchar() [L265] input_266 = __VERIFIER_nondet_uchar() [L266] input_269 = __VERIFIER_nondet_uchar() [L267] input_276 = __VERIFIER_nondet_uchar() [L268] input_283 = __VERIFIER_nondet_uchar() [L269] input_288 = __VERIFIER_nondet_uchar() [L270] input_293 = __VERIFIER_nondet_uchar() [L271] input_300 = __VERIFIER_nondet_uchar() [L272] input_308 = __VERIFIER_nondet_uchar() [L273] input_312 = __VERIFIER_nondet_uchar() [L274] input_313 = __VERIFIER_nondet_uchar() [L275] input_315 = __VERIFIER_nondet_uchar() [L276] input_318 = __VERIFIER_nondet_uchar() [L277] input_320 = __VERIFIER_nondet_uchar() [L278] input_321 = __VERIFIER_nondet_uchar() [L279] input_326 = __VERIFIER_nondet_uchar() [L280] input_330 = __VERIFIER_nondet_uchar() [L281] input_333 = __VERIFIER_nondet_uchar() [L282] input_338 = __VERIFIER_nondet_uchar() [L283] input_343 = __VERIFIER_nondet_uchar() [L284] input_352 = __VERIFIER_nondet_uchar() [L285] input_357 = __VERIFIER_nondet_uchar() [L288] SORT_1 var_21_arg_0 = state_18; [L289] var_21_arg_0 = var_21_arg_0 & mask_SORT_1 [L290] SORT_20 var_21 = var_21_arg_0; [L291] SORT_20 var_23_arg_0 = var_21; [L292] SORT_20 var_23_arg_1 = var_22; [L293] SORT_1 var_23 = var_23_arg_0 == var_23_arg_1; [L294] SORT_1 var_24_arg_0 = var_23; [L295] SORT_1 var_24 = ~var_24_arg_0; [L296] SORT_1 var_29_arg_0 = state_25; [L297] SORT_1 var_29_arg_1 = state_27; [L298] SORT_1 var_29 = var_29_arg_0 | var_29_arg_1; [L299] SORT_1 var_32_arg_0 = var_29; [L300] SORT_1 var_32_arg_1 = state_30; [L301] SORT_1 var_32 = var_32_arg_0 | var_32_arg_1; [L302] SORT_1 var_35_arg_0 = var_32; [L303] SORT_1 var_35_arg_1 = state_33; [L304] SORT_1 var_35 = var_35_arg_0 | var_35_arg_1; [L305] SORT_1 var_38_arg_0 = var_35; [L306] SORT_1 var_38_arg_1 = state_36; [L307] SORT_1 var_38 = var_38_arg_0 | var_38_arg_1; [L308] SORT_1 var_41_arg_0 = var_38; [L309] SORT_1 var_41_arg_1 = state_39; [L310] SORT_1 var_41 = var_41_arg_0 | var_41_arg_1; [L311] SORT_1 var_42_arg_0 = var_41; [L312] var_42_arg_0 = var_42_arg_0 & mask_SORT_1 [L313] SORT_20 var_42 = var_42_arg_0; [L314] SORT_20 var_43_arg_0 = var_42; [L315] SORT_20 var_43_arg_1 = var_22; [L316] SORT_1 var_43 = var_43_arg_0 == var_43_arg_1; [L317] SORT_1 var_44_arg_0 = var_24; [L318] SORT_1 var_44_arg_1 = var_43; [L319] SORT_1 var_44 = var_44_arg_0 | var_44_arg_1; [L320] SORT_1 var_48_arg_0 = var_44; [L321] SORT_1 var_48 = ~var_48_arg_0; [L322] SORT_1 var_49_arg_0 = var_47; [L323] SORT_1 var_49_arg_1 = var_48; [L324] SORT_1 var_49 = var_49_arg_0 & var_49_arg_1; [L325] var_49 = var_49 & mask_SORT_1 [L326] SORT_1 bad_50_arg_0 = var_49; [L327] CALL __VERIFIER_assert(!(bad_50_arg_0)) [L20] COND TRUE !(cond) VAL [cond=0, unknown-#in~cond-unknown=0] [L20] reach_error() VAL [cond=0, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 15:10:25,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW --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 ae120e442d3333a3829560b2dc4c79b941b2f5347f398389c9ef7ff85802ce4e --- 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-4e7fbc6 [2022-11-23 15:10:28,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:10:28,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:10:28,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:10:28,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:10:28,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:10:28,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:10:28,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:10:28,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:10:28,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:10:28,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:10:28,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:10:28,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:10:28,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:10:28,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:10:28,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:10:28,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:10:28,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:10:28,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:10:28,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:10:28,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:10:28,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:10:28,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:10:28,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:10:28,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:10:28,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:10:28,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:10:28,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:10:28,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:10:28,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:10:28,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:10:28,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:10:28,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:10:28,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:10:28,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:10:28,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:10:28,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:10:28,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:10:28,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:10:28,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:10:28,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:10:28,638 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-23 15:10:28,678 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:10:28,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:10:28,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:10:28,681 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:10:28,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:10:28,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:10:28,682 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:10:28,683 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:10:28,683 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:10:28,683 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:10:28,684 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:10:28,685 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:10:28,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:10:28,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:10:28,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:10:28,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:10:28,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:10:28,687 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:10:28,688 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:10:28,688 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:10:28,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:10:28,689 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:10:28,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:10:28,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:10:28,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:10:28,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:10:28,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:10:28,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:10:28,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:10:28,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:10:28,691 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:10:28,691 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:10:28,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:10:28,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:10:28,692 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:10:28,693 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_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae120e442d3333a3829560b2dc4c79b941b2f5347f398389c9ef7ff85802ce4e [2022-11-23 15:10:29,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:10:29,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:10:29,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:10:29,125 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:10:29,125 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:10:29,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c [2022-11-23 15:10:32,225 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:10:32,495 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:10:32,496 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c [2022-11-23 15:10:32,510 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/data/70f27779e/c1ae246d2bf24a3ab5381f23e503f609/FLAG8bfc5c97c [2022-11-23 15:10:32,528 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/data/70f27779e/c1ae246d2bf24a3ab5381f23e503f609 [2022-11-23 15:10:32,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:10:32,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:10:32,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:10:32,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:10:32,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:10:32,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:10:32" (1/1) ... [2022-11-23 15:10:32,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd0aff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:32, skipping insertion in model container [2022-11-23 15:10:32,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:10:32" (1/1) ... [2022-11-23 15:10:32,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:10:32,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:10:32,827 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_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c[1107,1120] [2022-11-23 15:10:33,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:10:33,151 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:10:33,165 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_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c[1107,1120] [2022-11-23 15:10:33,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:10:33,299 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:10:33,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:33 WrapperNode [2022-11-23 15:10:33,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:10:33,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:10:33,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:10:33,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:10:33,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:33" (1/1) ... [2022-11-23 15:10:33,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:33" (1/1) ... [2022-11-23 15:10:33,426 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 978 [2022-11-23 15:10:33,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:10:33,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:10:33,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:10:33,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:10:33,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:33" (1/1) ... [2022-11-23 15:10:33,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:33" (1/1) ... [2022-11-23 15:10:33,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:33" (1/1) ... [2022-11-23 15:10:33,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:33" (1/1) ... [2022-11-23 15:10:33,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:33" (1/1) ... [2022-11-23 15:10:33,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:33" (1/1) ... [2022-11-23 15:10:33,529 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:33" (1/1) ... [2022-11-23 15:10:33,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:33" (1/1) ... [2022-11-23 15:10:33,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:10:33,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:10:33,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:10:33,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:10:33,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:33" (1/1) ... [2022-11-23 15:10:33,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:10:33,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:10:33,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:10:33,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:10:33,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:10:33,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:10:33,932 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:10:33,934 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:10:34,845 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:10:34,852 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:10:34,853 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:10:34,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:10:34 BoogieIcfgContainer [2022-11-23 15:10:34,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:10:34,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:10:34,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:10:34,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:10:34,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:10:32" (1/3) ... [2022-11-23 15:10:34,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a705c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:10:34, skipping insertion in model container [2022-11-23 15:10:34,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:33" (2/3) ... [2022-11-23 15:10:34,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a705c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:10:34, skipping insertion in model container [2022-11-23 15:10:34,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:10:34" (3/3) ... [2022-11-23 15:10:34,874 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.miim.c [2022-11-23 15:10:34,893 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:10:34,894 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:10:34,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:10:34,962 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;@20e079f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:10:34,963 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:10:34,967 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:10:34,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:10:34,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:34,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:10:34,975 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:34,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:34,982 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-23 15:10:35,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:10:35,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384427648] [2022-11-23 15:10:35,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:35,001 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 [2022-11-23 15:10:35,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:10:35,007 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:10:35,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 15:10:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:35,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 15:10:35,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:10:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:10:35,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:10:35,528 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:10:35,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384427648] [2022-11-23 15:10:35,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384427648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:10:35,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:10:35,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:10:35,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763278066] [2022-11-23 15:10:35,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:10:35,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:10:35,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:10:35,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:10:35,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:10:35,583 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:10:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:10:35,712 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-23 15:10:35,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:10:35,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 15:10:35,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:10:35,725 INFO L225 Difference]: With dead ends: 20 [2022-11-23 15:10:35,725 INFO L226 Difference]: Without dead ends: 11 [2022-11-23 15:10:35,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:10:35,734 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:10:35,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:10:35,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-23 15:10:35,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-23 15:10:35,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:10:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 15:10:35,771 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-23 15:10:35,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:10:35,772 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 15:10:35,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:10:35,773 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 15:10:35,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:10:35,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:35,774 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 15:10:35,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/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)] Ended with exit code 0 [2022-11-23 15:10:35,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:10:35,987 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:35,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:35,987 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-23 15:10:35,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:10:35,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264602194] [2022-11-23 15:10:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:35,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:10:35,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:10:35,991 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:10:35,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 15:10:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:36,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 15:10:36,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:10:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:10:36,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:10:36,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:10:36,974 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:10:36,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264602194] [2022-11-23 15:10:36,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264602194] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:10:36,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [637201229] [2022-11-23 15:10:36,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:36,980 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:10:36,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:10:37,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:10:37,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-23 15:10:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:38,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 15:10:38,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:10:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:10:38,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:10:38,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:10:38,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [637201229] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:10:38,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293777062] [2022-11-23 15:10:38,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:38,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:10:38,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:10:38,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:10:38,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:10:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:38,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-23 15:10:38,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:10:38,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:10:38,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:10:39,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:10:39,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293777062] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:10:39,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 15:10:39,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-11-23 15:10:39,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916952464] [2022-11-23 15:10:39,082 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 15:10:39,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 15:10:39,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:10:39,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 15:10:39,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-23 15:10:39,085 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) [2022-11-23 15:10:39,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:10:39,367 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-23 15:10:39,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:10:39,369 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 [2022-11-23 15:10:39,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:10:39,369 INFO L225 Difference]: With dead ends: 16 [2022-11-23 15:10:39,369 INFO L226 Difference]: Without dead ends: 14 [2022-11-23 15:10:39,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-23 15:10:39,371 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:10:39,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 22 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:10:39,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-23 15:10:39,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-23 15:10:39,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:10:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-23 15:10:39,374 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-23 15:10:39,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:10:39,375 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-23 15:10:39,375 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) [2022-11-23 15:10:39,375 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-23 15:10:39,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 15:10:39,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:39,376 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-23 15:10:39,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:10:39,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:10:39,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:10:39,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 15:10:39,977 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:39,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:39,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-23 15:10:39,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:10:39,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740585628] [2022-11-23 15:10:39,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:10:39,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:10:39,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:10:39,982 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:10:40,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 15:10:40,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 15:10:40,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:10:40,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-23 15:10:40,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:10:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:10:41,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:10:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:10:44,824 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:10:44,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740585628] [2022-11-23 15:10:44,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740585628] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:10:44,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [131037162] [2022-11-23 15:10:44,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:10:44,825 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:10:44,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:10:44,829 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:10:44,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-23 15:10:46,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 15:10:46,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:10:46,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-23 15:10:46,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:10:46,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:10:46,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:10:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:10:51,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [131037162] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:10:51,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275359381] [2022-11-23 15:10:51,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:10:51,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:10:51,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:10:51,475 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:10:51,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 15:10:52,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 15:10:52,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:10:52,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-23 15:10:52,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:10:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:10:52,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:10:53,339 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:10:53,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275359381] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:10:53,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 15:10:53,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6, 6, 7, 7] total 17 [2022-11-23 15:10:53,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867708121] [2022-11-23 15:10:53,341 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 15:10:53,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 15:10:53,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:10:53,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 15:10:53,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=204, Unknown=3, NotChecked=0, Total=272 [2022-11-23 15:10:53,343 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:10:53,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:10:53,826 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-23 15:10:53,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:10:53,827 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-23 15:10:53,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:10:53,827 INFO L225 Difference]: With dead ends: 19 [2022-11-23 15:10:53,827 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 15:10:53,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=113, Invalid=304, Unknown=3, NotChecked=0, Total=420 [2022-11-23 15:10:53,829 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 25 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:10:53,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 25 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:10:53,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 15:10:53,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-23 15:10:53,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:10:53,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-23 15:10:53,833 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-23 15:10:53,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:10:53,833 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-23 15:10:53,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:10:53,833 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-23 15:10:53,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 15:10:53,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:53,834 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-23 15:10:53,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:10:54,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-23 15:10:54,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 15:10:54,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/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_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:10:54,457 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:54,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:54,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-23 15:10:54,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:10:54,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899578340] [2022-11-23 15:10:54,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:10:54,460 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:10:54,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:10:54,462 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:10:54,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:10:55,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 15:10:55,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:10:55,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 2224 conjuncts, 160 conjunts are in the unsatisfiable core [2022-11-23 15:10:55,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:10:57,032 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:10:57,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:12:06,191 WARN L233 SmtUtils]: Spent 1.07m on a formula simplification. DAG size of input: 479 DAG size of output: 345 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:12:30,234 WARN L233 SmtUtils]: Spent 19.48s on a formula simplification. DAG size of input: 347 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:12:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:12:30,245 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:12:30,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899578340] [2022-11-23 15:12:30,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899578340] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:12:30,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1767888892] [2022-11-23 15:12:30,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:12:30,246 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:12:30,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:12:30,249 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:12:30,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-23 15:12:32,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 15:12:32,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:12:32,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 2224 conjuncts, 165 conjunts are in the unsatisfiable core [2022-11-23 15:12:32,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:12:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:12:33,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:13:47,726 WARN L233 SmtUtils]: Spent 1.04m on a formula simplification. DAG size of input: 469 DAG size of output: 280 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:47,848 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:13:47,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1767888892] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:13:47,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081927974] [2022-11-23 15:13:47,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:13:47,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:13:47,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:13:47,853 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:13:47,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 15:13:48,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 15:13:48,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:13:48,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 2224 conjuncts, 265 conjunts are in the unsatisfiable core [2022-11-23 15:13:48,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:13:52,147 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:13:52,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:15:52,081 WARN L233 SmtUtils]: Spent 1.71m on a formula simplification. DAG size of input: 461 DAG size of output: 300 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:58,911 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:15:58,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081927974] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:15:58,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 15:15:58,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7, 7, 8, 8] total 21 [2022-11-23 15:15:58,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115281960] [2022-11-23 15:15:58,913 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 15:15:58,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 15:15:58,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:15:58,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 15:15:58,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=334, Unknown=15, NotChecked=0, Total=420 [2022-11-23 15:15:58,914 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:15:59,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:15:59,891 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-23 15:15:59,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 15:15:59,892 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 15:15:59,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:15:59,892 INFO L225 Difference]: With dead ends: 22 [2022-11-23 15:15:59,893 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 15:15:59,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 282.4s TimeCoverageRelationStatistics Valid=142, Invalid=493, Unknown=15, NotChecked=0, Total=650 [2022-11-23 15:15:59,894 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 31 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:15:59,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 37 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:15:59,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 15:15:59,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-23 15:15:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 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) [2022-11-23 15:15:59,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-23 15:15:59,901 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-11-23 15:15:59,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:15:59,901 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-23 15:15:59,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:15:59,901 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-23 15:15:59,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 15:15:59,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:15:59,902 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-23 15:15:59,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-23 15:16:00,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/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)] Forceful destruction successful, exit code 0 [2022-11-23 15:16:00,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 15:16:00,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:16:00,507 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:16:00,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:16:00,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 4 times [2022-11-23 15:16:00,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:16:00,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412314859] [2022-11-23 15:16:00,510 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:16:00,510 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:16:00,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:16:00,511 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:16:00,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb1af98e-46e6-43d3-b1e5-6c0b8e7cd184/bin/utaipan-Q6hlc19bkW/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 (12)] Waiting until timeout for monitored process [2022-11-23 15:16:01,506 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:16:01,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:16:01,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 2901 conjuncts, 385 conjunts are in the unsatisfiable core [2022-11-23 15:16:01,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:17:17,860 WARN L233 SmtUtils]: Spent 57.46s on a formula simplification. DAG size of input: 377 DAG size of output: 160 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:28,146 WARN L233 SmtUtils]: Spent 10.11s on a formula simplification that was a NOOP. DAG size: 167 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:31,458 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:17:31,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:22:24,436 WARN L233 SmtUtils]: Spent 4.72m on a formula simplification. DAG size of input: 497 DAG size of output: 281 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)