./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8730d6ec4fcbc5f6df390d4be768126ffa92771ead17d97dfd39e0d222630fca --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 15:59:39,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 15:59:39,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 15:59:39,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 15:59:39,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 15:59:39,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 15:59:39,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 15:59:39,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 15:59:39,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 15:59:39,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 15:59:39,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 15:59:39,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 15:59:39,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 15:59:39,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 15:59:39,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 15:59:39,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 15:59:39,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 15:59:39,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 15:59:39,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 15:59:39,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 15:59:39,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 15:59:39,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 15:59:39,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 15:59:39,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 15:59:39,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 15:59:39,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 15:59:39,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 15:59:39,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 15:59:39,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 15:59:39,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 15:59:39,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 15:59:39,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 15:59:39,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 15:59:39,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 15:59:39,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 15:59:39,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 15:59:39,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 15:59:39,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 15:59:39,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 15:59:39,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 15:59:39,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 15:59:39,851 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 15:59:39,888 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 15:59:39,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 15:59:39,889 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 15:59:39,889 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 15:59:39,890 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 15:59:39,891 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 15:59:39,891 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 15:59:39,891 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 15:59:39,891 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 15:59:39,892 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 15:59:39,893 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 15:59:39,893 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 15:59:39,893 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 15:59:39,893 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 15:59:39,894 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 15:59:39,894 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 15:59:39,894 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 15:59:39,894 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 15:59:39,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 15:59:39,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 15:59:39,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 15:59:39,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 15:59:39,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 15:59:39,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 15:59:39,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 15:59:39,898 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 15:59:39,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 15:59:39,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 15:59:39,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 15:59:39,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:59:39,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 15:59:39,900 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 15:59:39,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 15:59:39,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 15:59:39,901 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 15:59:39,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 15:59:39,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 15:59:39,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 15:59:39,902 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_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8730d6ec4fcbc5f6df390d4be768126ffa92771ead17d97dfd39e0d222630fca [2022-11-16 15:59:40,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 15:59:40,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 15:59:40,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 15:59:40,220 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 15:59:40,221 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 15:59:40,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c [2022-11-16 15:59:40,308 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/data/ec556d22d/8db358b992544db48e694cebdbdb5ca3/FLAG01649a5d5 [2022-11-16 15:59:40,864 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 15:59:40,865 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c [2022-11-16 15:59:40,874 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/data/ec556d22d/8db358b992544db48e694cebdbdb5ca3/FLAG01649a5d5 [2022-11-16 15:59:41,182 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/data/ec556d22d/8db358b992544db48e694cebdbdb5ca3 [2022-11-16 15:59:41,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 15:59:41,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 15:59:41,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 15:59:41,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 15:59:41,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 15:59:41,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:59:41" (1/1) ... [2022-11-16 15:59:41,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa750eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:41, skipping insertion in model container [2022-11-16 15:59:41,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:59:41" (1/1) ... [2022-11-16 15:59:41,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 15:59:41,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 15:59:41,442 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c[1107,1120] [2022-11-16 15:59:41,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:59:41,569 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 15:59:41,580 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c[1107,1120] [2022-11-16 15:59:41,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:59:41,695 INFO L208 MainTranslator]: Completed translation [2022-11-16 15:59:41,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:41 WrapperNode [2022-11-16 15:59:41,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 15:59:41,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 15:59:41,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 15:59:41,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 15:59:41,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:41" (1/1) ... [2022-11-16 15:59:41,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:41" (1/1) ... [2022-11-16 15:59:41,777 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 604 [2022-11-16 15:59:41,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 15:59:41,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 15:59:41,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 15:59:41,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 15:59:41,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:41" (1/1) ... [2022-11-16 15:59:41,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:41" (1/1) ... [2022-11-16 15:59:41,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:41" (1/1) ... [2022-11-16 15:59:41,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:41" (1/1) ... [2022-11-16 15:59:41,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:41" (1/1) ... [2022-11-16 15:59:41,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:41" (1/1) ... [2022-11-16 15:59:41,823 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:41" (1/1) ... [2022-11-16 15:59:41,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:41" (1/1) ... [2022-11-16 15:59:41,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 15:59:41,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 15:59:41,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 15:59:41,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 15:59:41,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:41" (1/1) ... [2022-11-16 15:59:41,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:59:41,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:59:41,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 15:59:41,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 15:59:41,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 15:59:41,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 15:59:42,198 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 15:59:42,202 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 15:59:45,039 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 15:59:45,582 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 15:59:45,582 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 15:59:45,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:59:45 BoogieIcfgContainer [2022-11-16 15:59:45,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 15:59:45,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 15:59:45,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 15:59:45,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 15:59:45,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:59:41" (1/3) ... [2022-11-16 15:59:45,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9334165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:59:45, skipping insertion in model container [2022-11-16 15:59:45,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:41" (2/3) ... [2022-11-16 15:59:45,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9334165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:59:45, skipping insertion in model container [2022-11-16 15:59:45,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:59:45" (3/3) ... [2022-11-16 15:59:45,593 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_sym_ex_v.c [2022-11-16 15:59:45,612 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 15:59:45,612 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 15:59:45,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 15:59:45,664 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;@12ef932e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 15:59:45,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 15:59:45,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:59:45,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 15:59:45,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:59:45,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 15:59:45,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:59:45,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:59:45,689 INFO L85 PathProgramCache]: Analyzing trace with hash 5578637, now seen corresponding path program 1 times [2022-11-16 15:59:45,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:59:45,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720431087] [2022-11-16 15:59:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:59:45,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:59:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 15:59:45,871 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 15:59:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 15:59:45,998 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 15:59:46,000 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 15:59:46,001 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 15:59:46,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 15:59:46,008 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 15:59:46,012 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 15:59:46,033 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-16 15:59:46,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 03:59:46 BoogieIcfgContainer [2022-11-16 15:59:46,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 15:59:46,046 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 15:59:46,046 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 15:59:46,047 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 15:59:46,048 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:59:45" (3/4) ... [2022-11-16 15:59:46,051 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 15:59:46,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 15:59:46,054 INFO L158 Benchmark]: Toolchain (without parser) took 4867.32ms. Allocated memory was 119.5MB in the beginning and 237.0MB in the end (delta: 117.4MB). Free memory was 80.3MB in the beginning and 169.4MB in the end (delta: -89.1MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2022-11-16 15:59:46,055 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 119.5MB. Free memory is still 97.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:59:46,055 INFO L158 Benchmark]: CACSL2BoogieTranslator took 508.22ms. Allocated memory is still 119.5MB. Free memory was 80.1MB in the beginning and 82.2MB in the end (delta: -2.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 15:59:46,057 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.18ms. Allocated memory is still 119.5MB. Free memory was 81.8MB in the beginning and 75.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 15:59:46,058 INFO L158 Benchmark]: Boogie Preprocessor took 72.94ms. Allocated memory is still 119.5MB. Free memory was 75.5MB in the beginning and 71.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 15:59:46,063 INFO L158 Benchmark]: RCFGBuilder took 3732.94ms. Allocated memory was 119.5MB in the beginning and 237.0MB in the end (delta: 117.4MB). Free memory was 71.8MB in the beginning and 192.5MB in the end (delta: -120.7MB). Peak memory consumption was 125.2MB. Max. memory is 16.1GB. [2022-11-16 15:59:46,064 INFO L158 Benchmark]: TraceAbstraction took 457.16ms. Allocated memory is still 237.0MB. Free memory was 191.4MB in the beginning and 169.4MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-16 15:59:46,065 INFO L158 Benchmark]: Witness Printer took 6.59ms. Allocated memory is still 237.0MB. Free memory is still 169.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:59:46,072 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 119.5MB. Free memory is still 97.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 508.22ms. Allocated memory is still 119.5MB. Free memory was 80.1MB in the beginning and 82.2MB in the end (delta: -2.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.18ms. Allocated memory is still 119.5MB. Free memory was 81.8MB in the beginning and 75.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.94ms. Allocated memory is still 119.5MB. Free memory was 75.5MB in the beginning and 71.8MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 3732.94ms. Allocated memory was 119.5MB in the beginning and 237.0MB in the end (delta: 117.4MB). Free memory was 71.8MB in the beginning and 192.5MB in the end (delta: -120.7MB). Peak memory consumption was 125.2MB. Max. memory is 16.1GB. * TraceAbstraction took 457.16ms. Allocated memory is still 237.0MB. Free memory was 191.4MB in the beginning and 169.4MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 6.59ms. Allocated memory is still 237.0MB. Free memory is still 169.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 92, overapproximation of bitwiseAnd at line 82. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 8); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (8 - 1); [L28] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 1); [L29] const SORT_5 msb_SORT_5 = (SORT_5)1 << (1 - 1); [L31] const SORT_5 var_7 = 0; [L32] const SORT_5 var_13 = 1; [L33] const SORT_1 var_33 = 0; [L34] const SORT_1 var_42 = 4; [L35] const SORT_1 var_54 = 5; [L36] const SORT_1 var_193 = 3; [L37] const SORT_1 var_199 = 2; [L39] SORT_1 input_2; [L40] SORT_1 input_3; [L41] SORT_1 input_4; [L42] SORT_5 input_6; [L43] SORT_1 input_38; [L45] SORT_5 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L46] SORT_5 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L47] SORT_5 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L48] SORT_5 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L49] SORT_5 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L50] SORT_5 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L51] SORT_5 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L52] SORT_5 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L53] SORT_5 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L54] SORT_1 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L55] SORT_1 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L57] SORT_5 init_9_arg_1 = var_7; [L58] state_8 = init_9_arg_1 [L59] SORT_5 init_18_arg_1 = var_13; [L60] state_17 = init_18_arg_1 [L61] SORT_5 init_20_arg_1 = var_7; [L62] state_19 = init_20_arg_1 [L63] SORT_5 init_22_arg_1 = var_7; [L64] state_21 = init_22_arg_1 [L65] SORT_5 init_24_arg_1 = var_7; [L66] state_23 = init_24_arg_1 [L67] SORT_5 init_26_arg_1 = var_7; [L68] state_25 = init_26_arg_1 [L69] SORT_5 init_28_arg_1 = var_7; [L70] state_27 = init_28_arg_1 [L71] SORT_5 init_30_arg_1 = var_7; [L72] state_29 = init_30_arg_1 [L73] SORT_5 init_32_arg_1 = var_13; [L74] state_31 = init_32_arg_1 [L75] SORT_1 init_35_arg_1 = var_33; [L76] state_34 = init_35_arg_1 [L77] SORT_1 init_37_arg_1 = var_33; [L78] state_36 = init_37_arg_1 VAL [init_18_arg_1=1, init_20_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=1, init_35_arg_1=0, init_37_arg_1=0, init_9_arg_1=0, mask_SORT_1=255, mask_SORT_5=1, msb_SORT_1=128, msb_SORT_5=1, state_17=1, state_19=0, state_21=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=1, state_34=0, state_36=0, state_8=0, var_13=1, var_193=3, var_199=2, var_33=0, var_42=4, var_54=5, var_7=0] [L81] input_2 = __VERIFIER_nondet_uchar() [L82] input_2 = input_2 & mask_SORT_1 [L83] input_3 = __VERIFIER_nondet_uchar() [L84] input_3 = input_3 & mask_SORT_1 [L85] input_4 = __VERIFIER_nondet_uchar() [L86] input_4 = input_4 & mask_SORT_1 [L87] input_6 = __VERIFIER_nondet_uchar() [L88] input_38 = __VERIFIER_nondet_uchar() [L91] SORT_5 var_10_arg_0 = state_8; [L92] SORT_5 var_10 = ~var_10_arg_0; [L93] SORT_5 var_14_arg_0 = var_10; [L94] SORT_5 var_14 = ~var_14_arg_0; [L95] SORT_5 var_15_arg_0 = var_13; [L96] SORT_5 var_15_arg_1 = var_14; [L97] SORT_5 var_15 = var_15_arg_0 & var_15_arg_1; [L98] var_15 = var_15 & mask_SORT_5 [L99] SORT_5 bad_16_arg_0 = var_15; [L100] CALL __VERIFIER_assert(!(bad_16_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 15:59:46,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8730d6ec4fcbc5f6df390d4be768126ffa92771ead17d97dfd39e0d222630fca --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 15:59:48,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 15:59:48,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 15:59:48,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 15:59:48,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 15:59:48,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 15:59:48,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 15:59:48,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 15:59:48,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 15:59:48,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 15:59:48,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 15:59:48,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 15:59:48,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 15:59:48,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 15:59:48,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 15:59:48,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 15:59:48,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 15:59:48,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 15:59:48,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 15:59:48,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 15:59:48,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 15:59:48,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 15:59:48,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 15:59:48,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 15:59:48,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 15:59:48,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 15:59:48,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 15:59:48,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 15:59:48,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 15:59:48,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 15:59:48,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 15:59:48,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 15:59:48,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 15:59:48,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 15:59:48,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 15:59:48,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 15:59:48,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 15:59:48,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 15:59:48,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 15:59:48,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 15:59:48,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 15:59:48,410 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-16 15:59:48,433 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 15:59:48,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 15:59:48,434 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 15:59:48,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 15:59:48,435 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 15:59:48,435 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 15:59:48,436 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 15:59:48,436 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 15:59:48,436 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 15:59:48,437 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 15:59:48,437 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 15:59:48,437 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 15:59:48,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 15:59:48,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 15:59:48,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 15:59:48,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 15:59:48,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 15:59:48,439 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 15:59:48,439 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 15:59:48,440 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 15:59:48,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 15:59:48,440 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 15:59:48,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 15:59:48,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 15:59:48,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 15:59:48,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 15:59:48,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:59:48,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 15:59:48,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 15:59:48,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 15:59:48,442 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 15:59:48,442 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 15:59:48,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 15:59:48,443 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 15:59:48,443 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 15:59:48,443 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_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8730d6ec4fcbc5f6df390d4be768126ffa92771ead17d97dfd39e0d222630fca [2022-11-16 15:59:48,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 15:59:48,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 15:59:48,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 15:59:48,869 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 15:59:48,870 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 15:59:48,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c [2022-11-16 15:59:48,947 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/data/6091e9311/88afa14e36ee478697b3ce5b906d7a6c/FLAG73b469f0e [2022-11-16 15:59:49,496 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 15:59:49,497 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c [2022-11-16 15:59:49,527 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/data/6091e9311/88afa14e36ee478697b3ce5b906d7a6c/FLAG73b469f0e [2022-11-16 15:59:49,811 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/data/6091e9311/88afa14e36ee478697b3ce5b906d7a6c [2022-11-16 15:59:49,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 15:59:49,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 15:59:49,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 15:59:49,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 15:59:49,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 15:59:49,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:59:49" (1/1) ... [2022-11-16 15:59:49,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1014840a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:49, skipping insertion in model container [2022-11-16 15:59:49,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:59:49" (1/1) ... [2022-11-16 15:59:49,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 15:59:49,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 15:59:50,033 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c[1107,1120] [2022-11-16 15:59:50,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:59:50,278 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 15:59:50,289 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex_v.c[1107,1120] [2022-11-16 15:59:50,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:59:50,363 INFO L208 MainTranslator]: Completed translation [2022-11-16 15:59:50,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:50 WrapperNode [2022-11-16 15:59:50,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 15:59:50,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 15:59:50,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 15:59:50,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 15:59:50,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:50" (1/1) ... [2022-11-16 15:59:50,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:50" (1/1) ... [2022-11-16 15:59:50,452 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 534 [2022-11-16 15:59:50,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 15:59:50,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 15:59:50,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 15:59:50,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 15:59:50,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:50" (1/1) ... [2022-11-16 15:59:50,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:50" (1/1) ... [2022-11-16 15:59:50,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:50" (1/1) ... [2022-11-16 15:59:50,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:50" (1/1) ... [2022-11-16 15:59:50,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:50" (1/1) ... [2022-11-16 15:59:50,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:50" (1/1) ... [2022-11-16 15:59:50,507 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:50" (1/1) ... [2022-11-16 15:59:50,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:50" (1/1) ... [2022-11-16 15:59:50,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 15:59:50,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 15:59:50,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 15:59:50,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 15:59:50,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:50" (1/1) ... [2022-11-16 15:59:50,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:59:50,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:59:50,615 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 15:59:50,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 15:59:50,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 15:59:50,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 15:59:50,912 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 15:59:50,914 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 15:59:51,640 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 15:59:51,646 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 15:59:51,648 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 15:59:51,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:59:51 BoogieIcfgContainer [2022-11-16 15:59:51,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 15:59:51,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 15:59:51,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 15:59:51,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 15:59:51,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:59:49" (1/3) ... [2022-11-16 15:59:51,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4429d5e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:59:51, skipping insertion in model container [2022-11-16 15:59:51,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:59:50" (2/3) ... [2022-11-16 15:59:51,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4429d5e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:59:51, skipping insertion in model container [2022-11-16 15:59:51,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:59:51" (3/3) ... [2022-11-16 15:59:51,660 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_sym_ex_v.c [2022-11-16 15:59:51,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 15:59:51,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 15:59:51,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 15:59:51,736 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;@142433b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 15:59:51,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 15:59:51,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:59:51,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 15:59:51,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:59:51,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 15:59:51,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:59:51,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:59:51,754 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-16 15:59:51,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 15:59:51,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799578773] [2022-11-16 15:59:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:59:51,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 15:59:51,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 15:59:51,775 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 15:59:51,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 15:59:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:59:51,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 15:59:51,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:59:52,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:59:52,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:59:52,123 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 15:59:52,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799578773] [2022-11-16 15:59:52,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799578773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:59:52,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:59:52,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 15:59:52,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452496134] [2022-11-16 15:59:52,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:59:52,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 15:59:52,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 15:59:52,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 15:59:52,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 15:59:52,169 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:59:52,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:59:52,277 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-16 15:59:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 15:59:52,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 15:59:52,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:59:52,292 INFO L225 Difference]: With dead ends: 20 [2022-11-16 15:59:52,293 INFO L226 Difference]: Without dead ends: 11 [2022-11-16 15:59:52,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 15:59:52,299 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 [2022-11-16 15:59:52,301 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] [2022-11-16 15:59:52,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-16 15:59:52,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-16 15:59:52,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:59:52,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-16 15:59:52,334 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-16 15:59:52,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:59:52,334 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-16 15:59:52,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:59:52,335 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-16 15:59:52,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 15:59:52,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:59:52,336 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-16 15:59:52,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 15:59:52,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 15:59:52,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:59:52,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:59:52,549 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-16 15:59:52,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 15:59:52,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594144478] [2022-11-16 15:59:52,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:59:52,555 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 15:59:52,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 15:59:52,567 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 15:59:52,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 15:59:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:59:52,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 15:59:52,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:59:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:59:52,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:59:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:59:53,270 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 15:59:53,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594144478] [2022-11-16 15:59:53,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594144478] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:59:53,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [22206522] [2022-11-16 15:59:53,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:59:53,276 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 15:59:53,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 15:59:53,280 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 15:59:53,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-16 15:59:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:59:53,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 15:59:53,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:59:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:59:53,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:59:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:59:54,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [22206522] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:59:54,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378445856] [2022-11-16 15:59:54,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:59:54,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:59:54,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:59:54,147 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:59:54,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 15:59:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:59:54,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 15:59:54,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:59:54,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:59:54,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:59:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:59:54,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378445856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:59:54,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 15:59:54,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-11-16 15:59:54,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943476179] [2022-11-16 15:59:54,767 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 15:59:54,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 15:59:54,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 15:59:54,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 15:59:54,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 15:59:54,769 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) [2022-11-16 15:59:54,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:59:54,914 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-16 15:59:54,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 15:59:54,915 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 [2022-11-16 15:59:54,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:59:54,915 INFO L225 Difference]: With dead ends: 16 [2022-11-16 15:59:54,915 INFO L226 Difference]: Without dead ends: 14 [2022-11-16 15:59:54,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-16 15:59:54,917 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 15:59:54,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 17 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 10 Unchecked, 0.1s Time] [2022-11-16 15:59:54,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-16 15:59:54,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-16 15:59:54,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:59:54,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-16 15:59:54,922 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-16 15:59:54,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:59:54,922 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-16 15:59:54,922 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) [2022-11-16 15:59:54,922 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-16 15:59:54,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 15:59:54,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:59:54,923 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-16 15:59:54,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 15:59:55,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 15:59:55,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-16 15:59:55,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 15:59:55,538 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:59:55,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:59:55,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-16 15:59:55,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 15:59:55,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294803439] [2022-11-16 15:59:55,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 15:59:55,541 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 15:59:55,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 15:59:55,542 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 15:59:55,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 15:59:55,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 15:59:55,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 15:59:56,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 112 conjunts are in the unsatisfiable core [2022-11-16 15:59:56,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:59:56,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:59:56,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:59:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:59:57,575 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 15:59:57,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294803439] [2022-11-16 15:59:57,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294803439] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:59:57,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1460470510] [2022-11-16 15:59:57,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 15:59:57,576 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 15:59:57,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 15:59:57,577 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 15:59:57,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-16 15:59:58,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 15:59:58,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 15:59:58,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 112 conjunts are in the unsatisfiable core [2022-11-16 15:59:58,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:59:58,667 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:59:58,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:00:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:00:03,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1460470510] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:00:03,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765103901] [2022-11-16 16:00:03,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 16:00:03,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:00:03,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:00:03,691 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:00:03,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 16:00:04,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 16:00:04,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:00:04,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 117 conjunts are in the unsatisfiable core [2022-11-16 16:00:04,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:00:04,828 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:00:04,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:00:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:00:07,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765103901] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:00:07,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 16:00:07,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 9, 9] total 21 [2022-11-16 16:00:07,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672508282] [2022-11-16 16:00:07,201 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 16:00:07,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 16:00:07,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:00:07,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 16:00:07,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=316, Unknown=2, NotChecked=0, Total=420 [2022-11-16 16:00:07,203 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:00:07,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:00:07,559 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-16 16:00:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 16:00:07,560 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 16:00:07,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:00:07,561 INFO L225 Difference]: With dead ends: 19 [2022-11-16 16:00:07,561 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 16:00:07,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=162, Invalid=436, Unknown=2, NotChecked=0, Total=600 [2022-11-16 16:00:07,563 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 24 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:00:07,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 26 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 39 Unchecked, 0.0s Time] [2022-11-16 16:00:07,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 16:00:07,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-16 16:00:07,568 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) [2022-11-16 16:00:07,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-16 16:00:07,569 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-16 16:00:07,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:00:07,569 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-16 16:00:07,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:00:07,570 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-16 16:00:07,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 16:00:07,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:00:07,571 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-16 16:00:07,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 16:00:07,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 16:00:07,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-16 16:00:08,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 16:00:08,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:00:08,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:00:08,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-16 16:00:08,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:00:08,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395893621] [2022-11-16 16:00:08,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 16:00:08,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:00:08,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:00:08,191 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:00:08,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 16:00:08,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 16:00:08,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:00:08,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 215 conjunts are in the unsatisfiable core [2022-11-16 16:00:08,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:00:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:00:14,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:00:43,345 WARN L233 SmtUtils]: Spent 12.28s on a formula simplification that was a NOOP. DAG size: 397 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:01:30,642 WARN L233 SmtUtils]: Spent 28.48s on a formula simplification that was a NOOP. DAG size: 634 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:01:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:01:31,753 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:01:31,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395893621] [2022-11-16 16:01:31,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395893621] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:01:31,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1774812014] [2022-11-16 16:01:31,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 16:01:31,754 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:01:31,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:01:31,757 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:01:31,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-16 16:01:32,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 16:01:32,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:01:32,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 268 conjunts are in the unsatisfiable core [2022-11-16 16:01:32,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:01:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:01:34,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:01:54,833 WARN L233 SmtUtils]: Spent 9.04s on a formula simplification. DAG size of input: 404 DAG size of output: 347 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:04:01,618 WARN L233 SmtUtils]: Spent 1.79m on a formula simplification. DAG size of input: 709 DAG size of output: 680 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:04:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:04:02,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1774812014] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:04:02,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481928579] [2022-11-16 16:04:02,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 16:04:02,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:04:02,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:04:02,162 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:04:02,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 16:04:02,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 16:04:02,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:04:02,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 128 conjunts are in the unsatisfiable core [2022-11-16 16:04:02,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:04:05,063 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:04:05,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:04:36,380 WARN L233 SmtUtils]: Spent 6.46s on a formula simplification that was a NOOP. DAG size: 246 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:04:48,398 WARN L233 SmtUtils]: Spent 6.69s on a formula simplification that was a NOOP. DAG size: 250 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:04:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:04:48,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481928579] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:04:48,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 16:04:48,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 10, 10] total 31 [2022-11-16 16:04:48,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998937096] [2022-11-16 16:04:48,504 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 16:04:48,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 16:04:48,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:04:48,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 16:04:48,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=762, Unknown=34, NotChecked=0, Total=930 [2022-11-16 16:04:48,506 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 31 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:04:55,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:04:55,473 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-16 16:04:55,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 16:04:55,474 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 31 states have internal predecessors, (59), 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 [2022-11-16 16:04:55,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:04:55,474 INFO L225 Difference]: With dead ends: 22 [2022-11-16 16:04:55,475 INFO L226 Difference]: Without dead ends: 20 [2022-11-16 16:04:55,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 274.9s TimeCoverageRelationStatistics Valid=263, Invalid=1034, Unknown=35, NotChecked=0, Total=1332 [2022-11-16 16:04:55,476 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 16:04:55,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 70 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 92 Unchecked, 0.3s Time] [2022-11-16 16:04:55,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-16 16:04:55,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-16 16:04:55,487 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) [2022-11-16 16:04:55,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-16 16:04:55,488 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-11-16 16:04:55,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:04:55,488 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-16 16:04:55,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 31 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:04:55,488 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-16 16:04:55,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 16:04:55,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:04:55,489 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-16 16:04:55,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2022-11-16 16:04:55,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 16:04:55,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 16:04:56,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:04:56,096 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:04:56,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:04:56,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 4 times [2022-11-16 16:04:56,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:04:56,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328429402] [2022-11-16 16:04:56,097 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 16:04:56,098 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:04:56,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:04:56,098 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:04:56,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 16:04:56,695 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 16:04:56,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:04:56,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 1845 conjuncts, 382 conjunts are in the unsatisfiable core [2022-11-16 16:04:56,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:04:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:04:59,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:05:06,640 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 319 DAG size of output: 260 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:06:37,385 WARN L233 SmtUtils]: Spent 1.39m on a formula simplification. DAG size of input: 710 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:11:18,849 WARN L233 SmtUtils]: Spent 4.45m on a formula simplification. DAG size of input: 961 DAG size of output: 479 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:11:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:11:19,482 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:11:19,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328429402] [2022-11-16 16:11:19,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328429402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:11:19,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [385113558] [2022-11-16 16:11:19,483 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 16:11:19,483 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:11:19,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:11:19,485 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:11:19,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71be0f8-44f9-4de3-b338-cecd374d7b51/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-16 16:11:20,649 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 16:11:20,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:11:20,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 1845 conjuncts, 381 conjunts are in the unsatisfiable core [2022-11-16 16:11:20,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:11:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:11:23,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:11:40,513 WARN L233 SmtUtils]: Spent 11.29s on a formula simplification. DAG size of input: 325 DAG size of output: 260 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:13:40,869 WARN L233 SmtUtils]: Spent 1.73m on a formula simplification. DAG size of input: 739 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)