./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS --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 733ceed6be9d24062ba911b31be8a1633ca20a25e8a4a67b98434fc2845023e4 --- 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-8393723 [2022-11-19 07:17:23,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:17:23,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:17:23,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:17:23,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:17:23,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:17:23,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:17:23,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:17:23,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:17:23,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:17:23,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:17:23,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:17:23,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:17:23,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:17:23,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:17:23,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:17:23,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:17:23,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:17:23,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:17:23,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:17:23,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:17:23,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:17:23,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:17:23,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:17:23,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:17:23,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:17:23,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:17:23,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:17:23,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:17:23,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:17:23,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:17:23,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:17:23,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:17:23,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:17:23,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:17:23,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:17:23,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:17:23,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:17:23,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:17:23,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:17:23,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:17:23,099 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:17:23,131 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:17:23,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:17:23,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:17:23,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:17:23,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:17:23,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:17:23,133 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:17:23,133 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:17:23,134 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:17:23,134 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:17:23,134 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:17:23,138 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:17:23,138 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:17:23,138 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:17:23,138 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:17:23,139 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:17:23,139 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:17:23,139 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:17:23,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:17:23,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:17:23,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:17:23,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:17:23,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:17:23,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:17:23,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:17:23,142 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:17:23,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:17:23,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:17:23,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:17:23,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:17:23,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:17:23,144 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:17:23,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:17:23,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:17:23,144 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:17:23,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:17:23,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:17:23,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:17:23,146 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_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 733ceed6be9d24062ba911b31be8a1633ca20a25e8a4a67b98434fc2845023e4 [2022-11-19 07:17:23,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:17:23,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:17:23,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:17:23,443 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:17:23,444 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:17:23,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c [2022-11-19 07:17:23,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/data/1d5086d35/24be74cf46ed4963b6584fe45a105236/FLAGf683fa1de [2022-11-19 07:17:23,990 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:17:23,992 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c [2022-11-19 07:17:24,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/data/1d5086d35/24be74cf46ed4963b6584fe45a105236/FLAGf683fa1de [2022-11-19 07:17:24,508 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/data/1d5086d35/24be74cf46ed4963b6584fe45a105236 [2022-11-19 07:17:24,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:17:24,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:17:24,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:17:24,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:17:24,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:17:24,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:17:24" (1/1) ... [2022-11-19 07:17:24,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f38eb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:24, skipping insertion in model container [2022-11-19 07:17:24,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:17:24" (1/1) ... [2022-11-19 07:17:24,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:17:24,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:17:24,775 WARN L234 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_a49c6183-81b0-41f9-97b9-1cd18ef15d43/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c[1107,1120] [2022-11-19 07:17:24,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:17:24,872 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:17:24,884 WARN L234 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_a49c6183-81b0-41f9-97b9-1cd18ef15d43/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c[1107,1120] [2022-11-19 07:17:24,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:17:24,979 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:17:24,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:24 WrapperNode [2022-11-19 07:17:24,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:17:24,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:17:24,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:17:24,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:17:24,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:24" (1/1) ... [2022-11-19 07:17:24,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:24" (1/1) ... [2022-11-19 07:17:25,041 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 281 [2022-11-19 07:17:25,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:17:25,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:17:25,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:17:25,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:17:25,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:24" (1/1) ... [2022-11-19 07:17:25,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:24" (1/1) ... [2022-11-19 07:17:25,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:24" (1/1) ... [2022-11-19 07:17:25,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:24" (1/1) ... [2022-11-19 07:17:25,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:24" (1/1) ... [2022-11-19 07:17:25,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:24" (1/1) ... [2022-11-19 07:17:25,075 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:24" (1/1) ... [2022-11-19 07:17:25,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:24" (1/1) ... [2022-11-19 07:17:25,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:17:25,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:17:25,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:17:25,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:17:25,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:24" (1/1) ... [2022-11-19 07:17:25,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:17:25,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:25,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:17:25,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:17:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:17:25,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:17:25,281 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:17:25,283 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:17:26,593 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:17:26,741 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:17:26,742 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:17:26,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:17:26 BoogieIcfgContainer [2022-11-19 07:17:26,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:17:26,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:17:26,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:17:26,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:17:26,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:17:24" (1/3) ... [2022-11-19 07:17:26,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bd1cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:17:26, skipping insertion in model container [2022-11-19 07:17:26,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:24" (2/3) ... [2022-11-19 07:17:26,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bd1cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:17:26, skipping insertion in model container [2022-11-19 07:17:26,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:17:26" (3/3) ... [2022-11-19 07:17:26,762 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_ball2004_1.c [2022-11-19 07:17:26,785 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:17:26,785 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:17:26,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:17:26,867 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;@486b6b17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:17:26,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:17:26,872 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) [2022-11-19 07:17:26,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:17:26,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:26,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:17:26,879 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:26,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:26,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2597424, now seen corresponding path program 1 times [2022-11-19 07:17:26,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:26,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641359863] [2022-11-19 07:17:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:26,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:17:27,091 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:17:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:17:27,171 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:17:27,174 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:17:27,175 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:17:27,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:17:27,183 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 07:17:27,187 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:17:27,208 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-19 07:17:27,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:17:27 BoogieIcfgContainer [2022-11-19 07:17:27,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:17:27,226 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:17:27,226 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:17:27,226 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:17:27,228 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:17:26" (3/4) ... [2022-11-19 07:17:27,231 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 07:17:27,231 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:17:27,233 INFO L158 Benchmark]: Toolchain (without parser) took 2720.01ms. Allocated memory was 123.7MB in the beginning and 199.2MB in the end (delta: 75.5MB). Free memory was 98.7MB in the beginning and 127.9MB in the end (delta: -29.2MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. [2022-11-19 07:17:27,234 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 123.7MB. Free memory is still 75.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:17:27,235 INFO L158 Benchmark]: CACSL2BoogieTranslator took 465.95ms. Allocated memory is still 123.7MB. Free memory was 98.4MB in the beginning and 93.4MB in the end (delta: 5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:17:27,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.51ms. Allocated memory is still 123.7MB. Free memory was 93.4MB in the beginning and 89.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:17:27,237 INFO L158 Benchmark]: Boogie Preprocessor took 38.17ms. Allocated memory is still 123.7MB. Free memory was 89.6MB in the beginning and 87.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:17:27,243 INFO L158 Benchmark]: RCFGBuilder took 1669.57ms. Allocated memory was 123.7MB in the beginning and 199.2MB in the end (delta: 75.5MB). Free memory was 87.5MB in the beginning and 147.3MB in the end (delta: -59.8MB). Peak memory consumption was 73.5MB. Max. memory is 16.1GB. [2022-11-19 07:17:27,244 INFO L158 Benchmark]: TraceAbstraction took 469.81ms. Allocated memory is still 199.2MB. Free memory was 147.3MB in the beginning and 127.9MB in the end (delta: 19.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-19 07:17:27,245 INFO L158 Benchmark]: Witness Printer took 5.86ms. Allocated memory is still 199.2MB. Free memory is still 127.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:17:27,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 123.7MB. Free memory is still 75.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 465.95ms. Allocated memory is still 123.7MB. Free memory was 98.4MB in the beginning and 93.4MB in the end (delta: 5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.51ms. Allocated memory is still 123.7MB. Free memory was 93.4MB in the beginning and 89.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.17ms. Allocated memory is still 123.7MB. Free memory was 89.6MB in the beginning and 87.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1669.57ms. Allocated memory was 123.7MB in the beginning and 199.2MB in the end (delta: 75.5MB). Free memory was 87.5MB in the beginning and 147.3MB in the end (delta: -59.8MB). Peak memory consumption was 73.5MB. Max. memory is 16.1GB. * TraceAbstraction took 469.81ms. Allocated memory is still 199.2MB. Free memory was 147.3MB in the beginning and 127.9MB in the end (delta: 19.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 5.86ms. Allocated memory is still 199.2MB. Free memory is still 127.9MB. 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 64, overapproximation of bitwiseAnd at line 69. 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_23 mask_SORT_23 = (SORT_23)-1 >> (sizeof(SORT_23) * 8 - 3); [L29] const SORT_23 msb_SORT_23 = (SORT_23)1 << (3 - 1); [L31] const SORT_1 var_3 = 0; [L32] const SORT_1 var_9 = 1; [L34] SORT_1 input_2; [L36] SORT_1 state_4 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L37] SORT_1 state_13 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L38] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L39] SORT_1 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L40] SORT_1 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L41] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L42] SORT_23 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_23; [L43] SORT_23 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_23; [L44] SORT_23 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_23; [L46] SORT_1 init_5_arg_1 = var_3; [L47] state_4 = init_5_arg_1 [L48] SORT_1 init_14_arg_1 = var_9; [L49] state_13 = init_14_arg_1 [L50] SORT_1 init_16_arg_1 = var_3; [L51] state_15 = init_16_arg_1 [L52] SORT_1 init_18_arg_1 = var_3; [L53] state_17 = init_18_arg_1 [L54] SORT_1 init_20_arg_1 = var_3; [L55] state_19 = init_20_arg_1 [L56] SORT_1 init_22_arg_1 = var_9; [L57] state_21 = init_22_arg_1 VAL [init_14_arg_1=1, init_16_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_22_arg_1=1, init_5_arg_1=0, mask_SORT_1=1, mask_SORT_23=7, msb_SORT_1=1, msb_SORT_23=4, state_13=1, state_15=0, state_17=0, state_19=0, state_21=1, state_24=0, state_25=0, state_26=2, state_4=0, var_3=0, var_9=1] [L60] input_2 = __VERIFIER_nondet_uchar() [L63] SORT_1 var_6_arg_0 = state_4; [L64] SORT_1 var_6 = ~var_6_arg_0; [L65] SORT_1 var_10_arg_0 = var_6; [L66] SORT_1 var_10 = ~var_10_arg_0; [L67] SORT_1 var_11_arg_0 = var_9; [L68] SORT_1 var_11_arg_1 = var_10; [L69] SORT_1 var_11 = var_11_arg_0 & var_11_arg_1; [L70] var_11 = var_11 & mask_SORT_1 [L71] SORT_1 bad_12_arg_0 = var_11; [L72] CALL __VERIFIER_assert(!(bad_12_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: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 07:17:27,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/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_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS --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 733ceed6be9d24062ba911b31be8a1633ca20a25e8a4a67b98434fc2845023e4 --- 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-8393723 [2022-11-19 07:17:29,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:17:29,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:17:29,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:17:29,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:17:29,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:17:29,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:17:29,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:17:29,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:17:29,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:17:29,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:17:29,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:17:29,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:17:29,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:17:29,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:17:29,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:17:29,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:17:29,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:17:29,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:17:29,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:17:29,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:17:29,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:17:29,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:17:29,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:17:29,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:17:29,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:17:29,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:17:29,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:17:29,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:17:29,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:17:29,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:17:29,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:17:29,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:17:29,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:17:29,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:17:29,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:17:29,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:17:29,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:17:29,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:17:29,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:17:29,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:17:29,833 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 07:17:29,873 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:17:29,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:17:29,874 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:17:29,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:17:29,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:17:29,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:17:29,876 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:17:29,876 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:17:29,877 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:17:29,877 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:17:29,878 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:17:29,878 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:17:29,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:17:29,880 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:17:29,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:17:29,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:17:29,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:17:29,881 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:17:29,881 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:17:29,881 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:17:29,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:17:29,882 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:17:29,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:17:29,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:17:29,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:17:29,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:17:29,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:17:29,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:17:29,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:17:29,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:17:29,884 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:17:29,884 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:17:29,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:17:29,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:17:29,885 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:17:29,886 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_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 733ceed6be9d24062ba911b31be8a1633ca20a25e8a4a67b98434fc2845023e4 [2022-11-19 07:17:30,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:17:30,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:17:30,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:17:30,316 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:17:30,317 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:17:30,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c [2022-11-19 07:17:30,390 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/data/d947b06d0/b4b1a61a3dcf4e53a8ca5f0608001dab/FLAGdfe608ecb [2022-11-19 07:17:30,922 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:17:30,923 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c [2022-11-19 07:17:30,939 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/data/d947b06d0/b4b1a61a3dcf4e53a8ca5f0608001dab/FLAGdfe608ecb [2022-11-19 07:17:31,271 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/data/d947b06d0/b4b1a61a3dcf4e53a8ca5f0608001dab [2022-11-19 07:17:31,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:17:31,277 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:17:31,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:17:31,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:17:31,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:17:31,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:17:31" (1/1) ... [2022-11-19 07:17:31,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183025b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:31, skipping insertion in model container [2022-11-19 07:17:31,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:17:31" (1/1) ... [2022-11-19 07:17:31,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:17:31,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:17:31,502 WARN L234 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_a49c6183-81b0-41f9-97b9-1cd18ef15d43/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c[1107,1120] [2022-11-19 07:17:31,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:17:31,637 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:17:31,647 WARN L234 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_a49c6183-81b0-41f9-97b9-1cd18ef15d43/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c[1107,1120] [2022-11-19 07:17:31,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:17:31,718 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:17:31,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:31 WrapperNode [2022-11-19 07:17:31,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:17:31,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:17:31,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:17:31,720 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:17:31,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:31" (1/1) ... [2022-11-19 07:17:31,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:31" (1/1) ... [2022-11-19 07:17:31,769 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 267 [2022-11-19 07:17:31,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:17:31,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:17:31,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:17:31,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:17:31,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:31" (1/1) ... [2022-11-19 07:17:31,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:31" (1/1) ... [2022-11-19 07:17:31,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:31" (1/1) ... [2022-11-19 07:17:31,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:31" (1/1) ... [2022-11-19 07:17:31,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:31" (1/1) ... [2022-11-19 07:17:31,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:31" (1/1) ... [2022-11-19 07:17:31,799 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:31" (1/1) ... [2022-11-19 07:17:31,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:31" (1/1) ... [2022-11-19 07:17:31,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:17:31,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:17:31,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:17:31,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:17:31,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:31" (1/1) ... [2022-11-19 07:17:31,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:17:31,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:31,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:17:31,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:17:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:17:31,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:17:32,058 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:17:32,059 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:17:32,440 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:17:32,446 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:17:32,447 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:17:32,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:17:32 BoogieIcfgContainer [2022-11-19 07:17:32,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:17:32,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:17:32,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:17:32,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:17:32,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:17:31" (1/3) ... [2022-11-19 07:17:32,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32143ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:17:32, skipping insertion in model container [2022-11-19 07:17:32,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:17:31" (2/3) ... [2022-11-19 07:17:32,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32143ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:17:32, skipping insertion in model container [2022-11-19 07:17:32,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:17:32" (3/3) ... [2022-11-19 07:17:32,457 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_ball2004_1.c [2022-11-19 07:17:32,474 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:17:32,475 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:17:32,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:17:32,527 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;@50667209, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:17:32,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:17:32,535 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) [2022-11-19 07:17:32,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 07:17:32,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:32,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 07:17:32,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:32,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:32,557 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-19 07:17:32,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:17:32,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814392550] [2022-11-19 07:17:32,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:32,571 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 [2022-11-19 07:17:32,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:17:32,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:17:32,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:17:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:32,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:17:32,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:32,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:17:32,878 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:17:32,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814392550] [2022-11-19 07:17:32,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814392550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:32,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:17:32,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:17:32,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409399436] [2022-11-19 07:17:32,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:32,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:17:32,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:17:32,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:17:32,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:17:32,932 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) [2022-11-19 07:17:33,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:33,014 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-19 07:17:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:17:33,018 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 [2022-11-19 07:17:33,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:33,028 INFO L225 Difference]: With dead ends: 20 [2022-11-19 07:17:33,028 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 07:17:33,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:17:33,035 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:33,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:17:33,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 07:17:33,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-19 07:17:33,068 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) [2022-11-19 07:17:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 07:17:33,070 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 07:17:33,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:33,071 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 07:17:33,071 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) [2022-11-19 07:17:33,071 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 07:17:33,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:17:33,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:33,072 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 07:17:33,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:17:33,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:17:33,283 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:33,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:33,284 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-19 07:17:33,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:17:33,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797496648] [2022-11-19 07:17:33,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:33,286 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 [2022-11-19 07:17:33,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:17:33,290 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:17:33,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:17:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:33,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-19 07:17:33,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:33,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:17:34,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:34,010 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:17:34,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797496648] [2022-11-19 07:17:34,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797496648] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:17:34,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1066740610] [2022-11-19 07:17:34,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:34,016 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:17:34,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:17:34,022 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:17:34,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 07:17:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:34,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-19 07:17:34,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:34,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:34,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:17:34,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:34,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1066740610] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:17:34,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113785161] [2022-11-19 07:17:34,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:34,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:34,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:34,638 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:17:34,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:17:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:34,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-19 07:17:34,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:34,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:17:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:35,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113785161] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:17:35,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:17:35,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-11-19 07:17:35,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239351636] [2022-11-19 07:17:35,164 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:17:35,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 07:17:35,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:17:35,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 07:17:35,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:17:35,167 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:17:35,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:35,269 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-19 07:17:35,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:17:35,270 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 07:17:35,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:35,271 INFO L225 Difference]: With dead ends: 16 [2022-11-19 07:17:35,271 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 07:17:35,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:17:35,272 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:35,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 17 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 10 Unchecked, 0.1s Time] [2022-11-19 07:17:35,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 07:17:35,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-19 07:17:35,284 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) [2022-11-19 07:17:35,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-19 07:17:35,285 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-19 07:17:35,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:35,285 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-19 07:17:35,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:17:35,286 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-19 07:17:35,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:17:35,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:35,287 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 07:17:35,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:17:35,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-19 07:17:35,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:17:35,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:35,899 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:35,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:35,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-19 07:17:35,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:17:35,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973547553] [2022-11-19 07:17:35,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:17:35,901 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 [2022-11-19 07:17:35,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:17:35,903 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:17:35,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:17:36,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:17:36,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:17:36,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-19 07:17:36,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:36,466 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:36,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:17:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:37,207 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:17:37,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973547553] [2022-11-19 07:17:37,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973547553] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:17:37,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [306117587] [2022-11-19 07:17:37,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:17:37,208 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:17:37,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:17:37,211 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:17:37,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-19 07:17:37,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:17:37,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:17:37,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-19 07:17:37,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:37,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:17:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:42,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [306117587] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:17:42,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371005185] [2022-11-19 07:17:42,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:17:42,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:42,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:42,647 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:17:42,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:17:42,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:17:42,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:17:42,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-19 07:17:42,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:43,429 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:43,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:17:49,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:17:49,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371005185] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:17:49,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:17:49,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 9, 9] total 21 [2022-11-19 07:17:49,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834109995] [2022-11-19 07:17:49,438 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:17:49,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 07:17:49,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:17:49,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 07:17:49,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=316, Unknown=2, NotChecked=0, Total=420 [2022-11-19 07:17:49,440 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:17:49,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:49,771 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-11-19 07:17:49,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:17:49,774 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 07:17:49,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:49,774 INFO L225 Difference]: With dead ends: 17 [2022-11-19 07:17:49,774 INFO L226 Difference]: Without dead ends: 15 [2022-11-19 07:17:49,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=162, Invalid=436, Unknown=2, NotChecked=0, Total=600 [2022-11-19 07:17:49,777 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:49,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 25 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time] [2022-11-19 07:17:49,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-19 07:17:49,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-19 07:17:49,782 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) [2022-11-19 07:17:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-19 07:17:49,782 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-19 07:17:49,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:49,783 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-19 07:17:49,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:17:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-19 07:17:49,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:17:49,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:49,784 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-19 07:17:49,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-11-19 07:17:49,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:17:50,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-19 07:17:50,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/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_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:50,389 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:50,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:50,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-19 07:17:50,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:17:50,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500289754] [2022-11-19 07:17:50,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:17:50,391 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 [2022-11-19 07:17:50,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:17:50,393 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:17:50,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:17:50,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-19 07:17:50,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:17:50,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 152 conjunts are in the unsatisfiable core [2022-11-19 07:17:50,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:18:27,804 WARN L233 SmtUtils]: Spent 36.09s on a formula simplification. DAG size of input: 199 DAG size of output: 189 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:18:39,041 WARN L233 SmtUtils]: Spent 10.95s on a formula simplification that was a NOOP. DAG size: 203 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:18:52,598 WARN L233 SmtUtils]: Spent 13.27s on a formula simplification that was a NOOP. DAG size: 196 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:19:17,466 WARN L233 SmtUtils]: Spent 14.86s on a formula simplification. DAG size of input: 203 DAG size of output: 147 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:19:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:19:17,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:19:25,021 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 287 DAG size of output: 219 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:19:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:19:33,012 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:19:33,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500289754] [2022-11-19 07:19:33,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500289754] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:19:33,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1293007238] [2022-11-19 07:19:33,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:19:33,013 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:19:33,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:19:33,015 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:19:33,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-19 07:19:33,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-19 07:19:33,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:19:33,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 214 conjunts are in the unsatisfiable core [2022-11-19 07:19:33,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:20:00,634 WARN L233 SmtUtils]: Spent 20.10s on a formula simplification. DAG size of input: 158 DAG size of output: 158 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:20:16,406 WARN L233 SmtUtils]: Spent 10.32s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:20:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:20:54,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:21:15,273 WARN L233 SmtUtils]: Spent 19.14s on a formula simplification. DAG size of input: 341 DAG size of output: 267 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:21:29,396 WARN L233 SmtUtils]: Spent 9.30s on a formula simplification. DAG size of input: 436 DAG size of output: 431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:21:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:21:29,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1293007238] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:21:29,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135538113] [2022-11-19 07:21:29,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:21:29,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:21:29,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:21:29,862 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:21:29,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 07:21:30,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-19 07:21:30,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:21:30,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-19 07:21:30,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:21:32,811 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:21:32,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:21:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:21:41,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135538113] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:21:41,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:21:41,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 10, 10] total 36 [2022-11-19 07:21:41,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889480316] [2022-11-19 07:21:41,701 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:21:41,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-19 07:21:41,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:21:41,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-19 07:21:41,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1042, Unknown=19, NotChecked=0, Total=1260 [2022-11-19 07:21:41,703 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 36 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 36 states have internal predecessors, (64), 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) [2022-11-19 07:21:47,969 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 274 DAG size of output: 258 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:22:41,360 WARN L233 SmtUtils]: Spent 41.28s on a formula simplification. DAG size of input: 353 DAG size of output: 295 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:23:26,353 WARN L233 SmtUtils]: Spent 36.66s on a formula simplification. DAG size of input: 216 DAG size of output: 179 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:23:52,211 WARN L233 SmtUtils]: Spent 21.52s on a formula simplification. DAG size of input: 209 DAG size of output: 177 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:23:52,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:52,787 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-11-19 07:23:52,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:23:52,788 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 36 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-19 07:23:52,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:52,789 INFO L225 Difference]: With dead ends: 20 [2022-11-19 07:23:52,789 INFO L226 Difference]: Without dead ends: 18 [2022-11-19 07:23:52,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 352.0s TimeCoverageRelationStatistics Valid=341, Invalid=1356, Unknown=25, NotChecked=0, Total=1722 [2022-11-19 07:23:52,791 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:23:52,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2022-11-19 07:23:52,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-19 07:23:52,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-19 07:23:52,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:23:52,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-19 07:23:52,800 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-11-19 07:23:52,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:52,800 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-19 07:23:52,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 36 states have internal predecessors, (64), 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) [2022-11-19 07:23:52,801 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-19 07:23:52,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:23:52,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:52,801 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-19 07:23:52,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:23:53,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:23:53,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:23:53,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:23:53,410 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:53,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:53,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 4 times [2022-11-19 07:23:53,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:23:53,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555678775] [2022-11-19 07:23:53,411 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:23:53,411 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 [2022-11-19 07:23:53,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:23:53,413 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:23:53,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-19 07:23:53,694 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:23:53,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:23:53,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 223 conjunts are in the unsatisfiable core [2022-11-19 07:23:53,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:24:02,798 WARN L233 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 127 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:24:11,050 WARN L233 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 147 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:24:19,290 WARN L233 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 140 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:24:26,091 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:24:26,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:24:35,641 WARN L233 SmtUtils]: Spent 8.64s on a formula simplification. DAG size of input: 221 DAG size of output: 219 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:25:03,718 WARN L233 SmtUtils]: Spent 20.20s on a formula simplification. DAG size of input: 454 DAG size of output: 390 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:26:05,098 WARN L233 SmtUtils]: Spent 46.79s on a formula simplification. DAG size of input: 563 DAG size of output: 463 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:26:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:26:05,453 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:26:05,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555678775] [2022-11-19 07:26:05,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555678775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:26:05,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1425109768] [2022-11-19 07:26:05,454 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:26:05,454 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:26:05,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:26:05,459 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:26:05,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-19 07:26:06,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:26:06,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:26:06,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 224 conjunts are in the unsatisfiable core [2022-11-19 07:26:06,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:26:22,490 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 127 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:26:35,373 WARN L233 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 147 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:26:48,507 WARN L233 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 140 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:27:31,780 WARN L233 SmtUtils]: Spent 13.85s on a formula simplification. DAG size of input: 169 DAG size of output: 26 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:27:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:27:31,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:27:45,263 WARN L233 SmtUtils]: Spent 6.76s on a formula simplification. DAG size of input: 221 DAG size of output: 219 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:28:28,209 WARN L233 SmtUtils]: Spent 24.14s on a formula simplification. DAG size of input: 451 DAG size of output: 355 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:29:20,154 WARN L233 SmtUtils]: Spent 32.80s on a formula simplification. DAG size of input: 528 DAG size of output: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:29:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:29:20,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1425109768] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:29:20,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574807132] [2022-11-19 07:29:20,480 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 07:29:20,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:29:20,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:29:20,482 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:29:20,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a49c6183-81b0-41f9-97b9-1cd18ef15d43/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-19 07:29:20,741 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 07:29:20,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:29:20,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 269 conjunts are in the unsatisfiable core [2022-11-19 07:29:20,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:49,853 WARN L233 SmtUtils]: Spent 16.77s on a formula simplification. DAG size of input: 149 DAG size of output: 143 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:30:07,079 WARN L233 SmtUtils]: Spent 8.48s on a formula simplification that was a NOOP. DAG size: 161 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:30:26,780 WARN L233 SmtUtils]: Spent 10.51s on a formula simplification that was a NOOP. DAG size: 154 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:30:54,683 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:30:54,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:32:16,315 WARN L233 SmtUtils]: Spent 24.43s on a formula simplification. DAG size of input: 515 DAG size of output: 316 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)