./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/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_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/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_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/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 53c4f091ca47a219848e8ce6a08b536550cf5bd4ddd301007577602d6cb19c38 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 20:08:45,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:08:45,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:08:45,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:08:45,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:08:45,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:08:45,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:08:45,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:08:45,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:08:45,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:08:45,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:08:45,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:08:45,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:08:45,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:08:45,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:08:45,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:08:45,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:08:45,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:08:45,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:08:45,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:08:45,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:08:45,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:08:45,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:08:45,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:08:45,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:08:45,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:08:45,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:08:45,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:08:45,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:08:45,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:08:45,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:08:45,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:08:45,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:08:45,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:08:45,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:08:45,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:08:45,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:08:45,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:08:45,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:08:45,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:08:45,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:08:45,865 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 20:08:45,886 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:08:45,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:08:45,887 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:08:45,887 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:08:45,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:08:45,888 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:08:45,888 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:08:45,888 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:08:45,889 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:08:45,889 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:08:45,889 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:08:45,889 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:08:45,890 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:08:45,890 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:08:45,890 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:08:45,890 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:08:45,891 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:08:45,891 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:08:45,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:08:45,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:08:45,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:08:45,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:08:45,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:08:45,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:08:45,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:08:45,893 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:08:45,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:08:45,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:08:45,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:08:45,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:08:45,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:08:45,895 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:08:45,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:08:45,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:08:45,895 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:08:45,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:08:45,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:08:45,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:08:45,896 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_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53c4f091ca47a219848e8ce6a08b536550cf5bd4ddd301007577602d6cb19c38 [2022-11-16 20:08:46,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:08:46,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:08:46,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:08:46,198 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:08:46,199 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:08:46,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c [2022-11-16 20:08:46,281 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/data/78187e032/5705c69709584fe0b0c2e8d9f9aa88b3/FLAGc9fb2abe1 [2022-11-16 20:08:46,863 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:08:46,864 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c [2022-11-16 20:08:46,883 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/data/78187e032/5705c69709584fe0b0c2e8d9f9aa88b3/FLAGc9fb2abe1 [2022-11-16 20:08:47,091 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/data/78187e032/5705c69709584fe0b0c2e8d9f9aa88b3 [2022-11-16 20:08:47,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:08:47,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:08:47,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:08:47,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:08:47,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:08:47,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:08:47" (1/1) ... [2022-11-16 20:08:47,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b32b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:47, skipping insertion in model container [2022-11-16 20:08:47,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:08:47" (1/1) ... [2022-11-16 20:08:47,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:08:47,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:08:47,401 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_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c[1014,1027] [2022-11-16 20:08:47,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:08:47,783 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:08:47,794 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_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c[1014,1027] [2022-11-16 20:08:47,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:08:48,012 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:08:48,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:48 WrapperNode [2022-11-16 20:08:48,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:08:48,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:08:48,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:08:48,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:08:48,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:48" (1/1) ... [2022-11-16 20:08:48,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:48" (1/1) ... [2022-11-16 20:08:48,297 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3352 [2022-11-16 20:08:48,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:08:48,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:08:48,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:08:48,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:08:48,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:48" (1/1) ... [2022-11-16 20:08:48,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:48" (1/1) ... [2022-11-16 20:08:48,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:48" (1/1) ... [2022-11-16 20:08:48,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:48" (1/1) ... [2022-11-16 20:08:48,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:48" (1/1) ... [2022-11-16 20:08:48,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:48" (1/1) ... [2022-11-16 20:08:48,457 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:48" (1/1) ... [2022-11-16 20:08:48,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:48" (1/1) ... [2022-11-16 20:08:48,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:08:48,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:08:48,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:08:48,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:08:48,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:48" (1/1) ... [2022-11-16 20:08:48,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:08:48,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:08:48,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:08:48,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:08:48,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:08:48,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:08:49,153 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:08:49,155 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:08:58,868 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:09:16,226 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:09:16,226 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 20:09:16,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:09:16 BoogieIcfgContainer [2022-11-16 20:09:16,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:09:16,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:09:16,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:09:16,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:09:16,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:08:47" (1/3) ... [2022-11-16 20:09:16,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f02ece9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:09:16, skipping insertion in model container [2022-11-16 20:09:16,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:08:48" (2/3) ... [2022-11-16 20:09:16,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f02ece9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:09:16, skipping insertion in model container [2022-11-16 20:09:16,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:09:16" (3/3) ... [2022-11-16 20:09:16,240 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lamport.1.prop1-func-interl.c [2022-11-16 20:09:16,260 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:09:16,261 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:09:16,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:09:16,317 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;@6bab91ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:09:16,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:09:16,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:09:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 20:09:16,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:09:16,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 20:09:16,329 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:09:16,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:09:16,334 INFO L85 PathProgramCache]: Analyzing trace with hash 60134213, now seen corresponding path program 1 times [2022-11-16 20:09:16,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:09:16,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299809201] [2022-11-16 20:09:16,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:16,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:09:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:09:16,815 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 20:09:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:09:17,073 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 20:09:17,075 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 20:09:17,076 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 20:09:17,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:09:17,086 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 20:09:17,090 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 20:09:17,139 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-16 20:09:17,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 08:09:17 BoogieIcfgContainer [2022-11-16 20:09:17,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 20:09:17,164 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 20:09:17,165 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 20:09:17,166 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 20:09:17,167 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:09:16" (3/4) ... [2022-11-16 20:09:17,171 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 20:09:17,171 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 20:09:17,172 INFO L158 Benchmark]: Toolchain (without parser) took 30073.57ms. Allocated memory was 121.6MB in the beginning and 4.4GB in the end (delta: 4.3GB). Free memory was 79.3MB in the beginning and 4.0GB in the end (delta: -3.9GB). Peak memory consumption was 321.1MB. Max. memory is 16.1GB. [2022-11-16 20:09:17,173 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory was 99.1MB in the beginning and 99.1MB in the end (delta: 55.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:09:17,175 INFO L158 Benchmark]: CACSL2BoogieTranslator took 910.20ms. Allocated memory was 121.6MB in the beginning and 155.2MB in the end (delta: 33.6MB). Free memory was 79.0MB in the beginning and 99.6MB in the end (delta: -20.5MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. [2022-11-16 20:09:17,176 INFO L158 Benchmark]: Boogie Procedure Inliner took 283.31ms. Allocated memory is still 155.2MB. Free memory was 99.6MB in the beginning and 96.7MB in the end (delta: 2.8MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2022-11-16 20:09:17,181 INFO L158 Benchmark]: Boogie Preprocessor took 203.29ms. Allocated memory is still 155.2MB. Free memory was 96.7MB in the beginning and 81.3MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-16 20:09:17,181 INFO L158 Benchmark]: RCFGBuilder took 27726.56ms. Allocated memory was 155.2MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 81.3MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-16 20:09:17,183 INFO L158 Benchmark]: TraceAbstraction took 932.33ms. Allocated memory is still 4.4GB. Free memory was 4.1GB in the beginning and 4.0GB in the end (delta: 71.3MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. [2022-11-16 20:09:17,184 INFO L158 Benchmark]: Witness Printer took 7.07ms. Allocated memory is still 4.4GB. Free memory was 4.0GB in the beginning and 4.0GB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 20:09:17,188 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 121.6MB. Free memory was 99.1MB in the beginning and 99.1MB in the end (delta: 55.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 910.20ms. Allocated memory was 121.6MB in the beginning and 155.2MB in the end (delta: 33.6MB). Free memory was 79.0MB in the beginning and 99.6MB in the end (delta: -20.5MB). Peak memory consumption was 34.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 283.31ms. Allocated memory is still 155.2MB. Free memory was 99.6MB in the beginning and 96.7MB in the end (delta: 2.8MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 203.29ms. Allocated memory is still 155.2MB. Free memory was 96.7MB in the beginning and 81.3MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * RCFGBuilder took 27726.56ms. Allocated memory was 155.2MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 81.3MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * TraceAbstraction took 932.33ms. Allocated memory is still 4.4GB. Free memory was 4.1GB in the beginning and 4.0GB in the end (delta: 71.3MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. * Witness Printer took 7.07ms. Allocated memory is still 4.4GB. Free memory was 4.0GB in the beginning and 4.0GB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 302, overapproximation of bitwiseAnd at line 213. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_22 = 0; [L39] const SORT_4 var_85 = 1; [L40] const SORT_4 var_86 = 0; [L41] const SORT_2 var_96 = 0; [L42] const SORT_2 var_100 = 1; [L43] const SORT_2 var_124 = 255; [L44] const SORT_2 var_126 = 2; [L45] const SORT_3 var_151 = 0; [L46] const SORT_4 var_320 = 3; [L47] const SORT_2 var_331 = 3; [L49] SORT_1 input_95; [L50] SORT_1 input_97; [L51] SORT_1 input_98; [L52] SORT_1 input_99; [L53] SORT_1 input_106; [L54] SORT_1 input_107; [L55] SORT_1 input_108; [L56] SORT_1 input_109; [L57] SORT_1 input_115; [L58] SORT_1 input_116; [L59] SORT_1 input_117; [L60] SORT_1 input_118; [L61] SORT_1 input_125; [L62] SORT_1 input_127; [L63] SORT_1 input_128; [L64] SORT_1 input_135; [L65] SORT_1 input_136; [L66] SORT_1 input_137; [L67] SORT_1 input_138; [L68] SORT_1 input_139; [L69] SORT_1 input_140; [L70] SORT_1 input_150; [L71] SORT_1 input_158; [L72] SORT_1 input_165; [L73] SORT_1 input_173; [L74] SORT_1 input_175; [L75] SORT_1 input_179; [L76] SORT_1 input_181; [L77] SORT_1 input_190; [L78] SORT_1 input_204; [L79] SORT_1 input_215; [L80] SORT_1 input_217; [L81] SORT_1 input_221; [L82] SORT_1 input_223; [L83] SORT_1 input_232; [L84] SORT_1 input_246; [L85] SORT_1 input_257; [L86] SORT_1 input_259; [L87] SORT_1 input_263; [L88] SORT_1 input_265; [L89] SORT_1 input_274; [L90] SORT_1 input_288; [L92] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L93] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L94] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L95] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L96] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L97] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L98] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L99] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L100] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L102] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L105] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L106] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L107] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L109] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L110] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L111] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L112] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L113] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L114] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L115] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L117] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L118] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L119] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L120] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L121] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L122] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L123] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L124] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L125] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L126] SORT_1 state_75 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L127] SORT_1 state_77 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L128] SORT_1 state_79 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L129] SORT_1 state_81 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L130] SORT_1 state_83 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L132] SORT_2 init_7_arg_1 = var_5; [L133] state_6 = init_7_arg_1 [L134] SORT_2 init_9_arg_1 = var_5; [L135] state_8 = init_9_arg_1 [L136] SORT_2 init_11_arg_1 = var_5; [L137] state_10 = init_11_arg_1 [L138] SORT_2 init_13_arg_1 = var_5; [L139] state_12 = init_13_arg_1 [L140] SORT_2 init_15_arg_1 = var_5; [L141] state_14 = init_15_arg_1 [L142] SORT_2 init_17_arg_1 = var_5; [L143] state_16 = init_17_arg_1 [L144] SORT_2 init_19_arg_1 = var_5; [L145] state_18 = init_19_arg_1 [L146] SORT_2 init_21_arg_1 = var_5; [L147] state_20 = init_21_arg_1 [L148] SORT_1 init_24_arg_1 = var_22; [L149] state_23 = init_24_arg_1 [L150] SORT_1 init_26_arg_1 = var_22; [L151] state_25 = init_26_arg_1 [L152] SORT_1 init_28_arg_1 = var_22; [L153] state_27 = init_28_arg_1 [L154] SORT_1 init_30_arg_1 = var_22; [L155] state_29 = init_30_arg_1 [L156] SORT_1 init_32_arg_1 = var_22; [L157] state_31 = init_32_arg_1 [L158] SORT_1 init_34_arg_1 = var_22; [L159] state_33 = init_34_arg_1 [L160] SORT_1 init_36_arg_1 = var_22; [L161] state_35 = init_36_arg_1 [L162] SORT_1 init_38_arg_1 = var_22; [L163] state_37 = init_38_arg_1 [L164] SORT_1 init_40_arg_1 = var_22; [L165] state_39 = init_40_arg_1 [L166] SORT_1 init_42_arg_1 = var_22; [L167] state_41 = init_42_arg_1 [L168] SORT_1 init_44_arg_1 = var_22; [L169] state_43 = init_44_arg_1 [L170] SORT_1 init_46_arg_1 = var_22; [L171] state_45 = init_46_arg_1 [L172] SORT_1 init_48_arg_1 = var_22; [L173] state_47 = init_48_arg_1 [L174] SORT_1 init_50_arg_1 = var_22; [L175] state_49 = init_50_arg_1 [L176] SORT_1 init_52_arg_1 = var_22; [L177] state_51 = init_52_arg_1 [L178] SORT_1 init_54_arg_1 = var_22; [L179] state_53 = init_54_arg_1 [L180] SORT_1 init_56_arg_1 = var_22; [L181] state_55 = init_56_arg_1 [L182] SORT_1 init_58_arg_1 = var_22; [L183] state_57 = init_58_arg_1 [L184] SORT_1 init_60_arg_1 = var_22; [L185] state_59 = init_60_arg_1 [L186] SORT_1 init_62_arg_1 = var_22; [L187] state_61 = init_62_arg_1 [L188] SORT_1 init_64_arg_1 = var_22; [L189] state_63 = init_64_arg_1 [L190] SORT_1 init_66_arg_1 = var_22; [L191] state_65 = init_66_arg_1 [L192] SORT_1 init_68_arg_1 = var_22; [L193] state_67 = init_68_arg_1 [L194] SORT_1 init_70_arg_1 = var_22; [L195] state_69 = init_70_arg_1 [L196] SORT_1 init_72_arg_1 = var_22; [L197] state_71 = init_72_arg_1 [L198] SORT_1 init_74_arg_1 = var_22; [L199] state_73 = init_74_arg_1 [L200] SORT_1 init_76_arg_1 = var_22; [L201] state_75 = init_76_arg_1 [L202] SORT_1 init_78_arg_1 = var_22; [L203] state_77 = init_78_arg_1 [L204] SORT_1 init_80_arg_1 = var_22; [L205] state_79 = init_80_arg_1 [L206] SORT_1 init_82_arg_1 = var_22; [L207] state_81 = init_82_arg_1 [L208] SORT_1 init_84_arg_1 = var_22; [L209] state_83 = init_84_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_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=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, state_81=0, state_83=0, var_100=1, var_124=255, var_126=2, var_151=0, var_22=0, var_320=3, var_331=3, var_5=0, var_85=1, var_86=0, var_96=0] [L212] input_95 = __VERIFIER_nondet_uchar() [L213] input_95 = input_95 & mask_SORT_1 [L214] input_97 = __VERIFIER_nondet_uchar() [L215] input_97 = input_97 & mask_SORT_1 [L216] input_98 = __VERIFIER_nondet_uchar() [L217] input_98 = input_98 & mask_SORT_1 [L218] input_99 = __VERIFIER_nondet_uchar() [L219] input_99 = input_99 & mask_SORT_1 [L220] input_106 = __VERIFIER_nondet_uchar() [L221] input_106 = input_106 & mask_SORT_1 [L222] input_107 = __VERIFIER_nondet_uchar() [L223] input_107 = input_107 & mask_SORT_1 [L224] input_108 = __VERIFIER_nondet_uchar() [L225] input_108 = input_108 & mask_SORT_1 [L226] input_109 = __VERIFIER_nondet_uchar() [L227] input_109 = input_109 & mask_SORT_1 [L228] input_115 = __VERIFIER_nondet_uchar() [L229] input_115 = input_115 & mask_SORT_1 [L230] input_116 = __VERIFIER_nondet_uchar() [L231] input_116 = input_116 & mask_SORT_1 [L232] input_117 = __VERIFIER_nondet_uchar() [L233] input_117 = input_117 & mask_SORT_1 [L234] input_118 = __VERIFIER_nondet_uchar() [L235] input_118 = input_118 & mask_SORT_1 [L236] input_125 = __VERIFIER_nondet_uchar() [L237] input_125 = input_125 & mask_SORT_1 [L238] input_127 = __VERIFIER_nondet_uchar() [L239] input_127 = input_127 & mask_SORT_1 [L240] input_128 = __VERIFIER_nondet_uchar() [L241] input_128 = input_128 & mask_SORT_1 [L242] input_135 = __VERIFIER_nondet_uchar() [L243] input_135 = input_135 & mask_SORT_1 [L244] input_136 = __VERIFIER_nondet_uchar() [L245] input_136 = input_136 & mask_SORT_1 [L246] input_137 = __VERIFIER_nondet_uchar() [L247] input_137 = input_137 & mask_SORT_1 [L248] input_138 = __VERIFIER_nondet_uchar() [L249] input_138 = input_138 & mask_SORT_1 [L250] input_139 = __VERIFIER_nondet_uchar() [L251] input_139 = input_139 & mask_SORT_1 [L252] input_140 = __VERIFIER_nondet_uchar() [L253] input_140 = input_140 & mask_SORT_1 [L254] input_150 = __VERIFIER_nondet_uchar() [L255] input_150 = input_150 & mask_SORT_1 [L256] input_158 = __VERIFIER_nondet_uchar() [L257] input_158 = input_158 & mask_SORT_1 [L258] input_165 = __VERIFIER_nondet_uchar() [L259] input_165 = input_165 & mask_SORT_1 [L260] input_173 = __VERIFIER_nondet_uchar() [L261] input_175 = __VERIFIER_nondet_uchar() [L262] input_179 = __VERIFIER_nondet_uchar() [L263] input_181 = __VERIFIER_nondet_uchar() [L264] input_190 = __VERIFIER_nondet_uchar() [L265] input_204 = __VERIFIER_nondet_uchar() [L266] input_215 = __VERIFIER_nondet_uchar() [L267] input_217 = __VERIFIER_nondet_uchar() [L268] input_221 = __VERIFIER_nondet_uchar() [L269] input_223 = __VERIFIER_nondet_uchar() [L270] input_232 = __VERIFIER_nondet_uchar() [L271] input_246 = __VERIFIER_nondet_uchar() [L272] input_257 = __VERIFIER_nondet_uchar() [L273] input_259 = __VERIFIER_nondet_uchar() [L274] input_263 = __VERIFIER_nondet_uchar() [L275] input_265 = __VERIFIER_nondet_uchar() [L276] input_274 = __VERIFIER_nondet_uchar() [L277] input_288 = __VERIFIER_nondet_uchar() [L280] SORT_1 var_87_arg_0 = state_25; [L281] SORT_4 var_87_arg_1 = var_85; [L282] SORT_4 var_87_arg_2 = var_86; [L283] SORT_4 var_87 = var_87_arg_0 ? var_87_arg_1 : var_87_arg_2; [L284] SORT_1 var_88_arg_0 = state_45; [L285] SORT_4 var_88_arg_1 = var_85; [L286] SORT_4 var_88_arg_2 = var_86; [L287] SORT_4 var_88 = var_88_arg_0 ? var_88_arg_1 : var_88_arg_2; [L288] SORT_4 var_89_arg_0 = var_87; [L289] SORT_4 var_89_arg_1 = var_88; [L290] SORT_4 var_89 = var_89_arg_0 + var_89_arg_1; [L291] SORT_1 var_90_arg_0 = state_65; [L292] SORT_4 var_90_arg_1 = var_85; [L293] SORT_4 var_90_arg_2 = var_86; [L294] SORT_4 var_90 = var_90_arg_0 ? var_90_arg_1 : var_90_arg_2; [L295] SORT_4 var_91_arg_0 = var_89; [L296] SORT_4 var_91_arg_1 = var_90; [L297] SORT_4 var_91 = var_91_arg_0 + var_91_arg_1; [L298] var_91 = var_91 & mask_SORT_4 [L299] SORT_4 var_92_arg_0 = var_91; [L300] SORT_4 var_92_arg_1 = var_85; [L301] SORT_1 var_92 = var_92_arg_0 <= var_92_arg_1; [L302] SORT_1 var_93_arg_0 = ~state_83; [L303] var_93_arg_0 = var_93_arg_0 & mask_SORT_1 [L304] SORT_1 var_93_arg_1 = ~var_92; [L305] var_93_arg_1 = var_93_arg_1 & mask_SORT_1 [L306] SORT_1 var_93 = var_93_arg_0 & var_93_arg_1; [L307] var_93 = var_93 & mask_SORT_1 [L308] SORT_1 bad_94_arg_0 = var_93; [L309] CALL __VERIFIER_assert(!(bad_94_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: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 20:09:17,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/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_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/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_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/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 53c4f091ca47a219848e8ce6a08b536550cf5bd4ddd301007577602d6cb19c38 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 20:09:19,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:09:19,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:09:19,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:09:19,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:09:19,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:09:19,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:09:19,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:09:19,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:09:19,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:09:19,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:09:19,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:09:19,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:09:19,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:09:19,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:09:19,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:09:19,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:09:19,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:09:19,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:09:19,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:09:19,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:09:19,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:09:19,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:09:19,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:09:19,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:09:19,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:09:19,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:09:19,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:09:19,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:09:19,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:09:19,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:09:19,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:09:19,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:09:19,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:09:19,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:09:19,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:09:19,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:09:19,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:09:19,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:09:19,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:09:19,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:09:19,800 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-16 20:09:19,844 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:09:19,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:09:19,846 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:09:19,846 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:09:19,847 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:09:19,847 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:09:19,848 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:09:19,848 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:09:19,848 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:09:19,848 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:09:19,850 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:09:19,850 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:09:19,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:09:19,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:09:19,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:09:19,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:09:19,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:09:19,853 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 20:09:19,853 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 20:09:19,853 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 20:09:19,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:09:19,854 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:09:19,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:09:19,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:09:19,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 20:09:19,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:09:19,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:09:19,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:09:19,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:09:19,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:09:19,856 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 20:09:19,856 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 20:09:19,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:09:19,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:09:19,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 20:09:19,858 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_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53c4f091ca47a219848e8ce6a08b536550cf5bd4ddd301007577602d6cb19c38 [2022-11-16 20:09:20,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:09:20,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:09:20,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:09:20,345 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:09:20,346 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:09:20,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c [2022-11-16 20:09:20,424 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/data/aa2b31805/4f00966210974364bcf159c510c06946/FLAG52e38eae7 [2022-11-16 20:09:21,217 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:09:21,218 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c [2022-11-16 20:09:21,257 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/data/aa2b31805/4f00966210974364bcf159c510c06946/FLAG52e38eae7 [2022-11-16 20:09:21,345 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/data/aa2b31805/4f00966210974364bcf159c510c06946 [2022-11-16 20:09:21,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:09:21,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:09:21,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:09:21,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:09:21,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:09:21,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:09:21" (1/1) ... [2022-11-16 20:09:21,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22fa029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:21, skipping insertion in model container [2022-11-16 20:09:21,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:09:21" (1/1) ... [2022-11-16 20:09:21,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:09:21,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:09:21,702 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_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c[1014,1027] [2022-11-16 20:09:22,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:09:22,102 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:09:22,114 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_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.1.prop1-func-interl.c[1014,1027] [2022-11-16 20:09:22,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:09:22,320 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:09:22,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:22 WrapperNode [2022-11-16 20:09:22,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:09:22,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:09:22,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:09:22,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:09:22,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:22" (1/1) ... [2022-11-16 20:09:22,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:22" (1/1) ... [2022-11-16 20:09:22,586 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2260 [2022-11-16 20:09:22,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:09:22,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:09:22,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:09:22,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:09:22,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:22" (1/1) ... [2022-11-16 20:09:22,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:22" (1/1) ... [2022-11-16 20:09:22,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:22" (1/1) ... [2022-11-16 20:09:22,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:22" (1/1) ... [2022-11-16 20:09:22,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:22" (1/1) ... [2022-11-16 20:09:22,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:22" (1/1) ... [2022-11-16 20:09:22,711 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:22" (1/1) ... [2022-11-16 20:09:22,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:22" (1/1) ... [2022-11-16 20:09:22,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:09:22,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:09:22,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:09:22,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:09:22,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:22" (1/1) ... [2022-11-16 20:09:22,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:09:22,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:09:22,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:09:22,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:09:22,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:09:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:09:23,560 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:09:23,562 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:09:28,152 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:09:28,159 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:09:28,159 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 20:09:28,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:09:28 BoogieIcfgContainer [2022-11-16 20:09:28,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:09:28,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:09:28,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:09:28,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:09:28,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:09:21" (1/3) ... [2022-11-16 20:09:28,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d40d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:09:28, skipping insertion in model container [2022-11-16 20:09:28,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:09:22" (2/3) ... [2022-11-16 20:09:28,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d40d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:09:28, skipping insertion in model container [2022-11-16 20:09:28,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:09:28" (3/3) ... [2022-11-16 20:09:28,170 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lamport.1.prop1-func-interl.c [2022-11-16 20:09:28,192 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:09:28,192 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:09:28,262 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:09:28,270 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;@d808f5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:09:28,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:09:28,275 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:09:28,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 20:09:28,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:09:28,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 20:09:28,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:09:28,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:09:28,290 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-16 20:09:28,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:09:28,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941984730] [2022-11-16 20:09:28,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:28,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:09:28,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:09:28,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:09:28,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 20:09:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:09:28,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 20:09:28,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:09:29,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:09:29,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:09:29,270 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:09:29,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941984730] [2022-11-16 20:09:29,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941984730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:09:29,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:09:29,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:09:29,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044334045] [2022-11-16 20:09:29,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:09:29,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:09:29,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:09:29,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:09:29,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:09:29,320 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:09:29,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:09:29,600 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-16 20:09:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:09:29,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 20:09:29,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:09:29,612 INFO L225 Difference]: With dead ends: 20 [2022-11-16 20:09:29,612 INFO L226 Difference]: Without dead ends: 11 [2022-11-16 20:09:29,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:09:29,619 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:09:29,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:09:29,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-16 20:09:29,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-16 20:09:29,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:09:29,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-16 20:09:29,653 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-16 20:09:29,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:09:29,653 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-16 20:09:29,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:09:29,654 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-16 20:09:29,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 20:09:29,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:09:29,655 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-16 20:09:29,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/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)] Ended with exit code 0 [2022-11-16 20:09:29,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:09:29,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:09:29,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:09:29,869 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-16 20:09:29,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:09:29,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216408024] [2022-11-16 20:09:29,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:09:29,873 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:09:29,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:09:29,874 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:09:29,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 20:09:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:09:31,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 2005 conjuncts, 194 conjunts are in the unsatisfiable core [2022-11-16 20:09:31,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:09:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:09:33,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:10:11,996 WARN L233 SmtUtils]: Spent 30.46s on a formula simplification that was a NOOP. DAG size: 408 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:10:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:10:13,303 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:10:13,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216408024] [2022-11-16 20:10:13,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216408024] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:10:13,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1812788368] [2022-11-16 20:10:13,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:10:13,304 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:10:13,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:10:13,306 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:10:13,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-16 20:10:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:10:15,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 2005 conjuncts, 196 conjunts are in the unsatisfiable core [2022-11-16 20:10:15,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:10:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:10:18,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:11:59,852 WARN L233 SmtUtils]: Spent 1.64m on a formula simplification. DAG size of input: 125 DAG size of output: 91 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:13:20,588 WARN L233 SmtUtils]: Spent 1.11m on a formula simplification that was a NOOP. DAG size: 445 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:13:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:13:22,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1812788368] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:13:22,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535958630] [2022-11-16 20:13:22,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:13:22,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:13:22,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:13:22,763 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:13:22,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 20:13:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:13:23,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 2005 conjuncts, 199 conjunts are in the unsatisfiable core [2022-11-16 20:13:23,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:13:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:13:25,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:14:06,190 WARN L233 SmtUtils]: Spent 29.93s on a formula simplification. DAG size of input: 85 DAG size of output: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:15:57,062 WARN L233 SmtUtils]: Spent 1.41m on a formula simplification that was a NOOP. DAG size: 435 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:17:32,965 WARN L233 SmtUtils]: Spent 1.34m on a formula simplification that was a NOOP. DAG size: 439 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:17:34,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:17:34,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535958630] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:17:34,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 20:17:34,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 16 [2022-11-16 20:17:34,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403689864] [2022-11-16 20:17:34,072 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 20:17:34,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 20:17:34,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:17:34,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 20:17:34,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=161, Unknown=15, NotChecked=0, Total=240 [2022-11-16 20:17:34,075 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:17:36,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:17:36,403 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-16 20:17:36,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 20:17:36,404 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 20:17:36,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:17:36,405 INFO L225 Difference]: With dead ends: 16 [2022-11-16 20:17:36,405 INFO L226 Difference]: Without dead ends: 14 [2022-11-16 20:17:36,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 465.1s TimeCoverageRelationStatistics Valid=87, Invalid=204, Unknown=15, NotChecked=0, Total=306 [2022-11-16 20:17:36,407 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:17:36,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 30 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 23 Unchecked, 0.2s Time] [2022-11-16 20:17:36,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-16 20:17:36,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-16 20:17:36,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:17:36,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-16 20:17:36,413 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-16 20:17:36,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:17:36,414 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-16 20:17:36,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:17:36,414 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-16 20:17:36,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 20:17:36,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:17:36,415 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-16 20:17:36,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 20:17:36,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 20:17:36,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-16 20:17:37,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/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_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 20:17:37,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:17:37,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:17:37,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-16 20:17:37,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:17:37,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166589832] [2022-11-16 20:17:37,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:17:37,030 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:17:37,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:17:37,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:17:37,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 20:17:38,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 20:17:38,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:17:38,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 3839 conjuncts, 363 conjunts are in the unsatisfiable core [2022-11-16 20:17:38,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:17:48,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:17:48,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:18:16,792 WARN L233 SmtUtils]: Spent 27.26s on a formula simplification. DAG size of input: 65 DAG size of output: 64 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:19:11,863 WARN L233 SmtUtils]: Spent 51.42s on a formula simplification that was a NOOP. DAG size: 378 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:20:43,579 WARN L233 SmtUtils]: Spent 1.24m on a formula simplification that was a NOOP. DAG size: 1333 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:20:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:20:46,413 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:20:46,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166589832] [2022-11-16 20:20:46,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166589832] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:20:46,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [91111211] [2022-11-16 20:20:46,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:20:46,414 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:20:46,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:20:46,417 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:20:46,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c18a6790-b0ce-44ff-9f05-4ad36cd02b39/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-16 20:20:49,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 20:20:49,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:20:49,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 3839 conjuncts, 444 conjunts are in the unsatisfiable core [2022-11-16 20:20:49,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:21:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:21:08,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:21:49,062 WARN L233 SmtUtils]: Spent 36.56s on a formula simplification. DAG size of input: 86 DAG size of output: 72 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:23:08,441 WARN L233 SmtUtils]: Spent 1.00m on a formula simplification that was a NOOP. DAG size: 438 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)