./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.1.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur --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 15ad4ed6d6c637b6ca55a4ce260ed4a2d8bde7cee87ac344e7916883bfed5f10 --- 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-38b53e6 [2022-11-26 00:41:13,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:41:13,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:41:13,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:41:13,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:41:13,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:41:13,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:41:13,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:41:13,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:41:13,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:41:13,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:41:13,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:41:13,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:41:13,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:41:13,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:41:13,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:41:13,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:41:13,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:41:13,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:41:13,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:41:13,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:41:13,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:41:13,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:41:13,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:41:13,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:41:13,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:41:13,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:41:13,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:41:13,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:41:13,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:41:13,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:41:13,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:41:13,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:41:13,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:41:13,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:41:13,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:41:13,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:41:13,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:41:13,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:41:13,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:41:13,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:41:13,124 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:41:13,163 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:41:13,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:41:13,164 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:41:13,164 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:41:13,165 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:41:13,165 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:41:13,166 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:41:13,166 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:41:13,166 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:41:13,166 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:41:13,168 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:41:13,168 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:41:13,168 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:41:13,168 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:41:13,169 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:41:13,169 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:41:13,169 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:41:13,169 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:41:13,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:41:13,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:41:13,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:41:13,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:41:13,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:41:13,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:41:13,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:41:13,172 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:41:13,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:41:13,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:41:13,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:41:13,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:41:13,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:41:13,178 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:41:13,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:41:13,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:41:13,179 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:41:13,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:41:13,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:41:13,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:41:13,180 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_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15ad4ed6d6c637b6ca55a4ce260ed4a2d8bde7cee87ac344e7916883bfed5f10 [2022-11-26 00:41:13,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:41:13,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:41:13,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:41:13,581 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:41:13,581 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:41:13,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.1.prop1-func-interl.c [2022-11-26 00:41:16,649 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:41:16,931 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:41:16,932 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.1.prop1-func-interl.c [2022-11-26 00:41:16,965 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/data/8787e9930/4350161803164b3585032e40fb650f5a/FLAGe52a09f7e [2022-11-26 00:41:16,981 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/data/8787e9930/4350161803164b3585032e40fb650f5a [2022-11-26 00:41:16,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:41:16,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:41:16,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:41:16,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:41:16,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:41:16,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:41:16" (1/1) ... [2022-11-26 00:41:16,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bafb0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:41:16, skipping insertion in model container [2022-11-26 00:41:16,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:41:16" (1/1) ... [2022-11-26 00:41:17,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:41:17,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:41:17,284 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.1.prop1-func-interl.c[1014,1027] [2022-11-26 00:41:17,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:41:17,563 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:41:17,572 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.1.prop1-func-interl.c[1014,1027] [2022-11-26 00:41:17,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:41:17,789 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:41:17,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:41:17 WrapperNode [2022-11-26 00:41:17,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:41:17,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:41:17,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:41:17,792 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:41:17,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:41:17" (1/1) ... [2022-11-26 00:41:17,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:41:17" (1/1) ... [2022-11-26 00:41:17,920 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1053 [2022-11-26 00:41:17,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:41:17,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:41:17,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:41:17,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:41:17,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:41:17" (1/1) ... [2022-11-26 00:41:17,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:41:17" (1/1) ... [2022-11-26 00:41:17,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:41:17" (1/1) ... [2022-11-26 00:41:17,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:41:17" (1/1) ... [2022-11-26 00:41:18,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:41:17" (1/1) ... [2022-11-26 00:41:18,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:41:17" (1/1) ... [2022-11-26 00:41:18,033 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:41:17" (1/1) ... [2022-11-26 00:41:18,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:41:17" (1/1) ... [2022-11-26 00:41:18,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:41:18,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:41:18,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:41:18,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:41:18,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:41:17" (1/1) ... [2022-11-26 00:41:18,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:41:18,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:41:18,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:41:18,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:41:18,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:41:18,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:41:18,540 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:41:18,542 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:42:07,772 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:42:07,802 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:42:07,803 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:42:07,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:42:07 BoogieIcfgContainer [2022-11-26 00:42:07,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:42:07,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:42:07,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:42:07,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:42:07,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:41:16" (1/3) ... [2022-11-26 00:42:07,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2b497c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:42:07, skipping insertion in model container [2022-11-26 00:42:07,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:41:17" (2/3) ... [2022-11-26 00:42:07,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2b497c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:42:07, skipping insertion in model container [2022-11-26 00:42:07,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:42:07" (3/3) ... [2022-11-26 00:42:07,818 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bakery.1.prop1-func-interl.c [2022-11-26 00:42:07,838 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:42:07,838 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:42:07,903 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:42:07,912 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;@15a6bbf2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:42:07,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:42:07,917 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) [2022-11-26 00:42:07,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:42:07,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:42:07,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:42:07,927 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:42:07,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:42:07,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-26 00:42:07,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:42:07,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510056141] [2022-11-26 00:42:07,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:42:07,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:42:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:42:08,345 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:42:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:42:08,592 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:42:08,593 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:42:08,595 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:42:08,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:42:08,601 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:42:08,605 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:42:08,638 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:42:08,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:42:08 BoogieIcfgContainer [2022-11-26 00:42:08,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:42:08,660 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:42:08,661 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:42:08,661 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:42:08,662 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:42:07" (3/4) ... [2022-11-26 00:42:08,666 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:42:08,666 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:42:08,668 INFO L158 Benchmark]: Toolchain (without parser) took 51682.09ms. Allocated memory was 163.6MB in the beginning and 861.9MB in the end (delta: 698.4MB). Free memory was 125.9MB in the beginning and 669.4MB in the end (delta: -543.5MB). Peak memory consumption was 154.9MB. Max. memory is 16.1GB. [2022-11-26 00:42:08,669 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 130.0MB. Free memory is still 97.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:42:08,670 INFO L158 Benchmark]: CACSL2BoogieTranslator took 802.79ms. Allocated memory is still 163.6MB. Free memory was 125.9MB in the beginning and 101.6MB in the end (delta: 24.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-26 00:42:08,671 INFO L158 Benchmark]: Boogie Procedure Inliner took 129.81ms. Allocated memory is still 163.6MB. Free memory was 101.6MB in the beginning and 89.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-26 00:42:08,672 INFO L158 Benchmark]: Boogie Preprocessor took 163.52ms. Allocated memory is still 163.6MB. Free memory was 89.0MB in the beginning and 81.4MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-26 00:42:08,677 INFO L158 Benchmark]: RCFGBuilder took 49719.98ms. Allocated memory was 163.6MB in the beginning and 861.9MB in the end (delta: 698.4MB). Free memory was 81.4MB in the beginning and 707.1MB in the end (delta: -625.7MB). Peak memory consumption was 485.8MB. Max. memory is 16.1GB. [2022-11-26 00:42:08,679 INFO L158 Benchmark]: TraceAbstraction took 849.31ms. Allocated memory is still 861.9MB. Free memory was 706.1MB in the beginning and 669.4MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-26 00:42:08,680 INFO L158 Benchmark]: Witness Printer took 6.42ms. Allocated memory is still 861.9MB. Free memory is still 669.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:42:08,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 130.0MB. Free memory is still 97.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 802.79ms. Allocated memory is still 163.6MB. Free memory was 125.9MB in the beginning and 101.6MB in the end (delta: 24.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 129.81ms. Allocated memory is still 163.6MB. Free memory was 101.6MB in the beginning and 89.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 163.52ms. Allocated memory is still 163.6MB. Free memory was 89.0MB in the beginning and 81.4MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 49719.98ms. Allocated memory was 163.6MB in the beginning and 861.9MB in the end (delta: 698.4MB). Free memory was 81.4MB in the beginning and 707.1MB in the end (delta: -625.7MB). Peak memory consumption was 485.8MB. Max. memory is 16.1GB. * TraceAbstraction took 849.31ms. Allocated memory is still 861.9MB. Free memory was 706.1MB in the beginning and 669.4MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 6.42ms. Allocated memory is still 861.9MB. Free memory is still 669.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 170, overapproximation of bitwiseAnd at line 126. 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_45 = 1; [L40] const SORT_4 var_46 = 0; [L41] const SORT_2 var_54 = 0; [L42] const SORT_2 var_56 = 1; [L43] const SORT_3 var_66 = 0; [L44] const SORT_4 var_153 = 2; [L45] const SORT_2 var_165 = 2; [L46] const SORT_4 var_167 = 9; [L48] SORT_1 input_53; [L49] SORT_1 input_55; [L50] SORT_1 input_60; [L51] SORT_1 input_61; [L52] SORT_1 input_65; [L53] SORT_1 input_73; [L54] SORT_1 input_80; [L55] SORT_1 input_84; [L56] SORT_1 input_85; [L57] SORT_1 input_97; [L58] SORT_1 input_101; [L59] SORT_1 input_102; [L60] SORT_1 input_121; [L61] SORT_1 input_124; [L62] SORT_1 input_140; [L63] SORT_1 input_143; [L65] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L66] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L67] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L68] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L69] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_2 init_7_arg_1 = var_5; [L86] state_6 = init_7_arg_1 [L87] SORT_2 init_9_arg_1 = var_5; [L88] state_8 = init_9_arg_1 [L89] SORT_2 init_11_arg_1 = var_5; [L90] state_10 = init_11_arg_1 [L91] SORT_2 init_13_arg_1 = var_5; [L92] state_12 = init_13_arg_1 [L93] SORT_2 init_15_arg_1 = var_5; [L94] state_14 = init_15_arg_1 [L95] SORT_2 init_17_arg_1 = var_5; [L96] state_16 = init_17_arg_1 [L97] SORT_2 init_19_arg_1 = var_5; [L98] state_18 = init_19_arg_1 [L99] SORT_2 init_21_arg_1 = var_5; [L100] state_20 = init_21_arg_1 [L101] SORT_1 init_24_arg_1 = var_22; [L102] state_23 = init_24_arg_1 [L103] SORT_1 init_26_arg_1 = var_22; [L104] state_25 = init_26_arg_1 [L105] SORT_1 init_28_arg_1 = var_22; [L106] state_27 = init_28_arg_1 [L107] SORT_1 init_30_arg_1 = var_22; [L108] state_29 = init_30_arg_1 [L109] SORT_1 init_32_arg_1 = var_22; [L110] state_31 = init_32_arg_1 [L111] SORT_1 init_34_arg_1 = var_22; [L112] state_33 = init_34_arg_1 [L113] SORT_1 init_36_arg_1 = var_22; [L114] state_35 = init_36_arg_1 [L115] SORT_1 init_38_arg_1 = var_22; [L116] state_37 = init_38_arg_1 [L117] SORT_1 init_40_arg_1 = var_22; [L118] state_39 = init_40_arg_1 [L119] SORT_1 init_42_arg_1 = var_22; [L120] state_41 = init_42_arg_1 [L121] SORT_1 init_44_arg_1 = var_22; [L122] state_43 = init_44_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_7_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_6=0, state_8=0, var_153=2, var_165=2, var_167=9, var_22=0, var_45=1, var_46=0, var_5=0, var_54=0, var_56=1, var_66=0] [L125] input_53 = __VERIFIER_nondet_uchar() [L126] input_53 = input_53 & mask_SORT_1 [L127] input_55 = __VERIFIER_nondet_uchar() [L128] input_55 = input_55 & mask_SORT_1 [L129] input_60 = __VERIFIER_nondet_uchar() [L130] input_60 = input_60 & mask_SORT_1 [L131] input_61 = __VERIFIER_nondet_uchar() [L132] input_61 = input_61 & mask_SORT_1 [L133] input_65 = __VERIFIER_nondet_uchar() [L134] input_65 = input_65 & mask_SORT_1 [L135] input_73 = __VERIFIER_nondet_uchar() [L136] input_73 = input_73 & mask_SORT_1 [L137] input_80 = __VERIFIER_nondet_uchar() [L138] input_80 = input_80 & mask_SORT_1 [L139] input_84 = __VERIFIER_nondet_uchar() [L140] input_84 = input_84 & mask_SORT_1 [L141] input_85 = __VERIFIER_nondet_uchar() [L142] input_85 = input_85 & mask_SORT_1 [L143] input_97 = __VERIFIER_nondet_uchar() [L144] input_97 = input_97 & mask_SORT_1 [L145] input_101 = __VERIFIER_nondet_uchar() [L146] input_101 = input_101 & mask_SORT_1 [L147] input_102 = __VERIFIER_nondet_uchar() [L148] input_102 = input_102 & mask_SORT_1 [L149] input_121 = __VERIFIER_nondet_uchar() [L150] input_124 = __VERIFIER_nondet_uchar() [L151] input_140 = __VERIFIER_nondet_uchar() [L152] input_143 = __VERIFIER_nondet_uchar() [L155] SORT_1 var_47_arg_0 = state_31; [L156] SORT_4 var_47_arg_1 = var_45; [L157] SORT_4 var_47_arg_2 = var_46; [L158] SORT_4 var_47 = var_47_arg_0 ? var_47_arg_1 : var_47_arg_2; [L159] SORT_1 var_48_arg_0 = state_41; [L160] SORT_4 var_48_arg_1 = var_45; [L161] SORT_4 var_48_arg_2 = var_46; [L162] SORT_4 var_48 = var_48_arg_0 ? var_48_arg_1 : var_48_arg_2; [L163] SORT_4 var_49_arg_0 = var_47; [L164] SORT_4 var_49_arg_1 = var_48; [L165] SORT_4 var_49 = var_49_arg_0 + var_49_arg_1; [L166] var_49 = var_49 & mask_SORT_4 [L167] SORT_4 var_50_arg_0 = var_49; [L168] SORT_4 var_50_arg_1 = var_45; [L169] SORT_1 var_50 = var_50_arg_0 <= var_50_arg_1; [L170] SORT_1 var_51_arg_0 = ~state_43; [L171] var_51_arg_0 = var_51_arg_0 & mask_SORT_1 [L172] SORT_1 var_51_arg_1 = ~var_50; [L173] var_51_arg_1 = var_51_arg_1 & mask_SORT_1 [L174] SORT_1 var_51 = var_51_arg_0 & var_51_arg_1; [L175] var_51 = var_51 & mask_SORT_1 [L176] SORT_1 bad_52_arg_0 = var_51; [L177] CALL __VERIFIER_assert(!(bad_52_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: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-26 00:42:08,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/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_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur --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 15ad4ed6d6c637b6ca55a4ce260ed4a2d8bde7cee87ac344e7916883bfed5f10 --- 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-38b53e6 [2022-11-26 00:42:11,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:42:11,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:42:11,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:42:11,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:42:11,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:42:11,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:42:11,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:42:11,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:42:11,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:42:11,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:42:11,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:42:11,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:42:11,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:42:11,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:42:11,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:42:11,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:42:11,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:42:11,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:42:11,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:42:11,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:42:11,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:42:11,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:42:11,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:42:11,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:42:11,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:42:11,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:42:11,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:42:11,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:42:11,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:42:11,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:42:11,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:42:11,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:42:11,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:42:11,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:42:11,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:42:11,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:42:11,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:42:11,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:42:11,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:42:11,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:42:11,224 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-26 00:42:11,281 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:42:11,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:42:11,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:42:11,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:42:11,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:42:11,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:42:11,287 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:42:11,287 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:42:11,287 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:42:11,287 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:42:11,288 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:42:11,289 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:42:11,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:42:11,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:42:11,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:42:11,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:42:11,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:42:11,290 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:42:11,291 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:42:11,291 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:42:11,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:42:11,291 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:42:11,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:42:11,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:42:11,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:42:11,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:42:11,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:42:11,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:42:11,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:42:11,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:42:11,293 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:42:11,293 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:42:11,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:42:11,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:42:11,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:42:11,294 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_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15ad4ed6d6c637b6ca55a4ce260ed4a2d8bde7cee87ac344e7916883bfed5f10 [2022-11-26 00:42:11,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:42:11,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:42:11,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:42:11,682 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:42:11,682 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:42:11,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.1.prop1-func-interl.c [2022-11-26 00:42:14,939 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:42:15,340 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:42:15,341 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.1.prop1-func-interl.c [2022-11-26 00:42:15,360 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/data/c06b8a06b/ade961e0ba1e4030b1cd89a4bcd4aa5e/FLAG1b172ad64 [2022-11-26 00:42:15,373 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/data/c06b8a06b/ade961e0ba1e4030b1cd89a4bcd4aa5e [2022-11-26 00:42:15,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:42:15,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:42:15,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:42:15,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:42:15,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:42:15,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:42:15" (1/1) ... [2022-11-26 00:42:15,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@330492ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:15, skipping insertion in model container [2022-11-26 00:42:15,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:42:15" (1/1) ... [2022-11-26 00:42:15,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:42:15,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:42:15,605 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.1.prop1-func-interl.c[1014,1027] [2022-11-26 00:42:15,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:42:15,880 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:42:15,902 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.1.prop1-func-interl.c[1014,1027] [2022-11-26 00:42:16,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:42:16,085 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:42:16,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:16 WrapperNode [2022-11-26 00:42:16,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:42:16,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:42:16,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:42:16,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:42:16,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:16" (1/1) ... [2022-11-26 00:42:16,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:16" (1/1) ... [2022-11-26 00:42:16,208 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1053 [2022-11-26 00:42:16,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:42:16,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:42:16,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:42:16,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:42:16,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:16" (1/1) ... [2022-11-26 00:42:16,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:16" (1/1) ... [2022-11-26 00:42:16,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:16" (1/1) ... [2022-11-26 00:42:16,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:16" (1/1) ... [2022-11-26 00:42:16,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:16" (1/1) ... [2022-11-26 00:42:16,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:16" (1/1) ... [2022-11-26 00:42:16,311 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:16" (1/1) ... [2022-11-26 00:42:16,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:16" (1/1) ... [2022-11-26 00:42:16,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:42:16,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:42:16,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:42:16,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:42:16,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:16" (1/1) ... [2022-11-26 00:42:16,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:42:16,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:42:16,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:42:16,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:42:16,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:42:16,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:42:16,789 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:42:16,791 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:42:18,407 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:42:18,416 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:42:18,416 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:42:18,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:42:18 BoogieIcfgContainer [2022-11-26 00:42:18,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:42:18,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:42:18,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:42:18,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:42:18,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:42:15" (1/3) ... [2022-11-26 00:42:18,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad0aacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:42:18, skipping insertion in model container [2022-11-26 00:42:18,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:42:16" (2/3) ... [2022-11-26 00:42:18,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad0aacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:42:18, skipping insertion in model container [2022-11-26 00:42:18,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:42:18" (3/3) ... [2022-11-26 00:42:18,430 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bakery.1.prop1-func-interl.c [2022-11-26 00:42:18,448 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:42:18,449 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:42:18,507 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:42:18,514 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;@79aff5f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:42:18,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:42:18,519 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) [2022-11-26 00:42:18,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:42:18,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:42:18,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:42:18,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:42:18,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:42:18,537 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-26 00:42:18,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:42:18,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754058262] [2022-11-26 00:42:18,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:42:18,554 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 [2022-11-26 00:42:18,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:42:18,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/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) [2022-11-26 00:42:18,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/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 [2022-11-26 00:42:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:42:18,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-26 00:42:18,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:42:19,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:42:19,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:42:19,186 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:42:19,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754058262] [2022-11-26 00:42:19,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754058262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:42:19,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:42:19,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:42:19,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117876846] [2022-11-26 00:42:19,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:42:19,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:42:19,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:42:19,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:42:19,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:42:19,240 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) [2022-11-26 00:42:19,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:42:19,556 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-26 00:42:19,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:42:19,559 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 [2022-11-26 00:42:19,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:42:19,566 INFO L225 Difference]: With dead ends: 20 [2022-11-26 00:42:19,566 INFO L226 Difference]: Without dead ends: 11 [2022-11-26 00:42:19,569 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 [2022-11-26 00:42:19,573 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:42:19,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:42:19,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-26 00:42:19,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-26 00:42:19,602 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) [2022-11-26 00:42:19,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-26 00:42:19,604 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-26 00:42:19,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:42:19,605 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-26 00:42:19,605 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) [2022-11-26 00:42:19,605 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-26 00:42:19,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:42:19,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:42:19,606 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-26 00:42:19,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:42:19,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/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 [2022-11-26 00:42:19,819 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:42:19,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:42:19,820 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-26 00:42:19,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:42:19,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123444137] [2022-11-26 00:42:19,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:42:19,823 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 [2022-11-26 00:42:19,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:42:19,824 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/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) [2022-11-26 00:42:19,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/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 [2022-11-26 00:42:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:42:20,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-26 00:42:20,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:42:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:42:21,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:42:44,171 WARN L233 SmtUtils]: Spent 21.09s on a formula simplification that was a NOOP. DAG size: 250 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:42:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:42:44,804 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:42:44,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123444137] [2022-11-26 00:42:44,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123444137] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:42:44,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [585472706] [2022-11-26 00:42:44,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:42:44,806 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:42:44,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:42:44,840 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:42:44,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-26 00:42:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:42:45,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-26 00:42:45,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:42:46,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:42:46,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:43:14,659 WARN L233 SmtUtils]: Spent 24.55s on a formula simplification that was a NOOP. DAG size: 198 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:43:15,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:15,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [585472706] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:43:15,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480564733] [2022-11-26 00:43:15,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:15,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:43:15,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:43:15,013 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:43:15,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:43:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:15,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-26 00:43:15,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:43:16,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:16,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:43:50,461 WARN L233 SmtUtils]: Spent 22.78s on a formula simplification that was a NOOP. DAG size: 198 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:44:19,023 WARN L233 SmtUtils]: Spent 24.82s on a formula simplification that was a NOOP. DAG size: 202 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:44:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:44:19,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480564733] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:44:19,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:44:19,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 16 [2022-11-26 00:44:19,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742347140] [2022-11-26 00:44:19,214 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:44:19,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-26 00:44:19,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:44:19,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-26 00:44:19,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=177, Unknown=5, NotChecked=0, Total=240 [2022-11-26 00:44:19,217 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) [2022-11-26 00:44:24,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:44:24,723 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-26 00:44:24,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:44:24,724 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 [2022-11-26 00:44:24,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:44:24,725 INFO L225 Difference]: With dead ends: 16 [2022-11-26 00:44:24,725 INFO L226 Difference]: Without dead ends: 14 [2022-11-26 00:44:24,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 117.2s TimeCoverageRelationStatistics Valid=96, Invalid=239, Unknown=7, NotChecked=0, Total=342 [2022-11-26 00:44:24,726 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:44:24,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 25 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:44:24,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-26 00:44:24,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-26 00:44:24,732 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) [2022-11-26 00:44:24,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-26 00:44:24,733 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-26 00:44:24,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:44:24,733 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-26 00:44:24,733 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) [2022-11-26 00:44:24,734 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-26 00:44:24,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:44:24,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:44:24,734 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-26 00:44:24,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/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 [2022-11-26 00:44:24,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:44:25,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:44:25,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/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_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-26 00:44:25,347 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:44:25,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:44:25,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-26 00:44:25,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:44:25,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666122222] [2022-11-26 00:44:25,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:44:25,351 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 [2022-11-26 00:44:25,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:44:25,352 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/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) [2022-11-26 00:44:25,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/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 [2022-11-26 00:44:26,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:44:26,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:44:26,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 217 conjunts are in the unsatisfiable core [2022-11-26 00:44:26,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:44:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:44:30,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:45:12,536 WARN L233 SmtUtils]: Spent 40.09s on a formula simplification that was a NOOP. DAG size: 218 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:47:07,036 WARN L233 SmtUtils]: Spent 1.66m on a formula simplification that was a NOOP. DAG size: 1435 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:47:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:10,668 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:47:10,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666122222] [2022-11-26 00:47:10,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666122222] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:47:10,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [496099658] [2022-11-26 00:47:10,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:47:10,670 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:47:10,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:47:10,674 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:47:10,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-26 00:47:12,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:47:12,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:47:12,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-26 00:47:12,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:47:20,310 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:47:20,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:48:15,982 WARN L233 SmtUtils]: Spent 40.97s on a formula simplification that was a NOOP. DAG size: 138 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:49:12,626 WARN L233 SmtUtils]: Spent 43.59s on a formula simplification that was a NOOP. DAG size: 440 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:49:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:49:13,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [496099658] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:49:13,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720916027] [2022-11-26 00:49:13,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:49:13,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:49:13,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:49:13,306 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:49:13,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 00:49:13,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:49:13,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:49:13,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 154 conjunts are in the unsatisfiable core [2022-11-26 00:49:13,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:49:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:49:24,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:50:20,589 WARN L233 SmtUtils]: Spent 39.08s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:51:21,834 WARN L233 SmtUtils]: Spent 41.90s on a formula simplification that was a NOOP. DAG size: 592 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:52:17,456 WARN L233 SmtUtils]: Spent 47.89s on a formula simplification that was a NOOP. DAG size: 596 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:52:18,017 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:52:18,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720916027] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:52:18,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:52:18,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 24 [2022-11-26 00:52:18,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965419577] [2022-11-26 00:52:18,018 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:52:18,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-26 00:52:18,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:52:18,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-26 00:52:18,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=433, Unknown=29, NotChecked=0, Total=552 [2022-11-26 00:52:18,021 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 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) [2022-11-26 00:52:32,998 WARN L233 SmtUtils]: Spent 14.66s on a formula simplification. DAG size of input: 559 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:52:49,917 WARN L233 SmtUtils]: Spent 14.76s on a formula simplification. DAG size of input: 563 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:53:07,137 WARN L233 SmtUtils]: Spent 12.60s on a formula simplification. DAG size of input: 543 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:53:11,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:53:13,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:53:32,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:53:35,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:53:37,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:53:40,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:53:42,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:53:45,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:53:46,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:53:46,361 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-26 00:53:46,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:53:46,365 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-26 00:53:46,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:53:46,366 INFO L225 Difference]: With dead ends: 19 [2022-11-26 00:53:46,366 INFO L226 Difference]: Without dead ends: 17 [2022-11-26 00:53:46,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 519.7s TimeCoverageRelationStatistics Valid=161, Invalid=562, Unknown=33, NotChecked=0, Total=756 [2022-11-26 00:53:46,368 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:53:46,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 54 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 8 Unknown, 0 Unchecked, 24.3s Time] [2022-11-26 00:53:46,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-26 00:53:46,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-26 00:53:46,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:53:46,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-26 00:53:46,381 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-26 00:53:46,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:53:46,381 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-26 00:53:46,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 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) [2022-11-26 00:53:46,382 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-26 00:53:46,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-26 00:53:46,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:53:46,383 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-26 00:53:46,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:53:46,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-26 00:53:46,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-26 00:53:46,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-26 00:53:46,992 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:53:46,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:53:46,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-26 00:53:46,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:53:46,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774446283] [2022-11-26 00:53:46,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:53:46,995 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 [2022-11-26 00:53:46,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:53:46,996 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/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) [2022-11-26 00:53:47,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_266e9d4d-ea53-4fe5-b28a-cab0eaf547c0/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-26 00:53:48,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-26 00:53:48,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:53:48,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 2566 conjuncts, 339 conjunts are in the unsatisfiable core [2022-11-26 00:53:48,318 INFO L286 TraceCheckSpWp]: Computing forward predicates...