./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.2.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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 8f104f99b414b05345a916e79d6b0248bda2f8b3b8491a5650a88fecf5c47ec5 --- 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 08:07:20,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:07:20,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:07:20,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:07:20,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:07:20,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:07:20,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:07:20,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:07:20,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:07:20,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:07:20,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:07:20,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:07:20,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:07:20,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:07:20,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:07:20,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:07:20,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:07:20,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:07:20,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:07:20,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:07:20,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:07:20,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:07:20,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:07:20,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:07:20,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:07:20,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:07:20,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:07:20,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:07:20,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:07:20,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:07:20,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:07:20,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:07:20,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:07:20,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:07:20,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:07:20,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:07:20,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:07:20,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:07:20,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:07:20,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:07:20,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:07:20,108 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:07:20,137 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:07:20,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:07:20,138 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:07:20,138 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:07:20,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:07:20,140 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:07:20,140 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:07:20,140 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:07:20,141 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:07:20,141 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:07:20,142 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:07:20,142 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:07:20,142 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:07:20,143 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:07:20,143 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:07:20,143 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:07:20,144 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:07:20,144 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:07:20,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:07:20,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:07:20,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:07:20,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:07:20,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:07:20,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:07:20,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:07:20,147 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:07:20,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:07:20,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:07:20,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:07:20,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:07:20,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:07:20,150 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:07:20,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:07:20,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:07:20,151 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:07:20,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:07:20,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:07:20,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:07:20,152 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_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f104f99b414b05345a916e79d6b0248bda2f8b3b8491a5650a88fecf5c47ec5 [2022-11-19 08:07:20,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:07:20,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:07:20,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:07:20,557 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:07:20,558 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:07:20,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.2.prop1-func-interl.c [2022-11-19 08:07:20,663 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/data/545c7c2c9/19bdf6afdc9b4d1eac8dbefb51f25aa1/FLAGe80223c9e [2022-11-19 08:07:21,446 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:07:21,447 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.2.prop1-func-interl.c [2022-11-19 08:07:21,470 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/data/545c7c2c9/19bdf6afdc9b4d1eac8dbefb51f25aa1/FLAGe80223c9e [2022-11-19 08:07:21,648 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/data/545c7c2c9/19bdf6afdc9b4d1eac8dbefb51f25aa1 [2022-11-19 08:07:21,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:07:21,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:07:21,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:07:21,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:07:21,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:07:21,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:07:21" (1/1) ... [2022-11-19 08:07:21,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e19355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:21, skipping insertion in model container [2022-11-19 08:07:21,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:07:21" (1/1) ... [2022-11-19 08:07:21,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:07:21,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:07:22,120 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_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.2.prop1-func-interl.c[1014,1027] [2022-11-19 08:07:22,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:07:22,453 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:07:22,467 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_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.2.prop1-func-interl.c[1014,1027] [2022-11-19 08:07:22,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:07:22,763 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:07:22,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:22 WrapperNode [2022-11-19 08:07:22,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:07:22,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:07:22,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:07:22,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:07:22,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:22" (1/1) ... [2022-11-19 08:07:22,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:22" (1/1) ... [2022-11-19 08:07:23,047 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2394 [2022-11-19 08:07:23,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:07:23,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:07:23,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:07:23,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:07:23,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:22" (1/1) ... [2022-11-19 08:07:23,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:22" (1/1) ... [2022-11-19 08:07:23,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:22" (1/1) ... [2022-11-19 08:07:23,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:22" (1/1) ... [2022-11-19 08:07:23,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:22" (1/1) ... [2022-11-19 08:07:23,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:22" (1/1) ... [2022-11-19 08:07:23,258 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:22" (1/1) ... [2022-11-19 08:07:23,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:22" (1/1) ... [2022-11-19 08:07:23,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:07:23,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:07:23,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:07:23,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:07:23,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:22" (1/1) ... [2022-11-19 08:07:23,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:07:23,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:07:23,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:07:23,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:07:23,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:07:23,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:07:23,939 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:07:23,942 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:07:27,907 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:07:38,659 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:07:38,660 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:07:38,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:38 BoogieIcfgContainer [2022-11-19 08:07:38,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:07:38,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:07:38,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:07:38,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:07:38,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:07:21" (1/3) ... [2022-11-19 08:07:38,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689acffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:38, skipping insertion in model container [2022-11-19 08:07:38,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:22" (2/3) ... [2022-11-19 08:07:38,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689acffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:38, skipping insertion in model container [2022-11-19 08:07:38,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:38" (3/3) ... [2022-11-19 08:07:38,674 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.peterson.2.prop1-func-interl.c [2022-11-19 08:07:38,697 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:07:38,697 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:07:38,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:07:38,767 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;@6b80f1c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:07:38,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:07:38,772 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 08:07:38,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:07:38,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:38,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:07:38,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:38,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:38,788 INFO L85 PathProgramCache]: Analyzing trace with hash 50420043, now seen corresponding path program 1 times [2022-11-19 08:07:38,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:07:38,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318216610] [2022-11-19 08:07:38,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:38,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:07:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:07:39,338 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:07:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:07:39,626 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:07:39,629 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:07:39,630 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 08:07:39,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:07:39,639 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 08:07:39,645 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:07:39,692 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-19 08:07:39,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:07:39 BoogieIcfgContainer [2022-11-19 08:07:39,720 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:07:39,721 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:07:39,721 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:07:39,722 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:07:39,722 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:38" (3/4) ... [2022-11-19 08:07:39,727 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 08:07:39,727 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:07:39,730 INFO L158 Benchmark]: Toolchain (without parser) took 18075.78ms. Allocated memory was 130.0MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 92.0MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 514.2MB. Max. memory is 16.1GB. [2022-11-19 08:07:39,730 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory is still 38.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:07:39,731 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1104.69ms. Allocated memory is still 130.0MB. Free memory was 91.8MB in the beginning and 62.3MB in the end (delta: 29.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-19 08:07:39,734 INFO L158 Benchmark]: Boogie Procedure Inliner took 282.45ms. Allocated memory was 130.0MB in the beginning and 178.3MB in the end (delta: 48.2MB). Free memory was 62.3MB in the beginning and 140.0MB in the end (delta: -77.7MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. [2022-11-19 08:07:39,741 INFO L158 Benchmark]: Boogie Preprocessor took 265.73ms. Allocated memory is still 178.3MB. Free memory was 140.0MB in the beginning and 128.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 08:07:39,742 INFO L158 Benchmark]: RCFGBuilder took 15347.67ms. Allocated memory was 178.3MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 128.4MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 726.2MB. Max. memory is 16.1GB. [2022-11-19 08:07:39,744 INFO L158 Benchmark]: TraceAbstraction took 1054.53ms. Allocated memory is still 2.4GB. Free memory was 1.9GB in the beginning and 1.8GB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2022-11-19 08:07:39,745 INFO L158 Benchmark]: Witness Printer took 6.47ms. Allocated memory is still 2.4GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:07:39,751 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory is still 38.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1104.69ms. Allocated memory is still 130.0MB. Free memory was 91.8MB in the beginning and 62.3MB in the end (delta: 29.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 282.45ms. Allocated memory was 130.0MB in the beginning and 178.3MB in the end (delta: 48.2MB). Free memory was 62.3MB in the beginning and 140.0MB in the end (delta: -77.7MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 265.73ms. Allocated memory is still 178.3MB. Free memory was 140.0MB in the beginning and 128.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 15347.67ms. Allocated memory was 178.3MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 128.4MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 726.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1054.53ms. Allocated memory is still 2.4GB. Free memory was 1.9GB in the beginning and 1.8GB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Witness Printer took 6.47ms. Allocated memory is still 2.4GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 221, overapproximation of bitwiseAnd at line 159. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_30 = 0; [L39] const SORT_4 var_63 = 1; [L40] const SORT_4 var_64 = 0; [L41] const SORT_2 var_74 = 0; [L42] const SORT_3 var_90 = 0; [L43] const SORT_2 var_95 = 2; [L44] const SORT_2 var_101 = 1; [L45] const SORT_4 var_121 = 2; [L46] const SORT_4 var_229 = 3; [L47] const SORT_2 var_251 = 3; [L49] SORT_1 input_73; [L50] SORT_1 input_75; [L51] SORT_1 input_79; [L52] SORT_1 input_80; [L53] SORT_1 input_84; [L54] SORT_1 input_85; [L55] SORT_1 input_89; [L56] SORT_1 input_96; [L57] SORT_1 input_102; [L58] SORT_1 input_132; [L59] SORT_1 input_135; [L60] SORT_1 input_139; [L61] SORT_1 input_146; [L62] SORT_1 input_149; [L63] SORT_1 input_153; [L64] SORT_1 input_160; [L65] SORT_1 input_163; [L66] SORT_1 input_167; [L67] SORT_1 input_177; [L68] SORT_1 input_195; [L69] SORT_1 input_213; [L71] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L74] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L75] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L76] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L79] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L80] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L81] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L82] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L83] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_2 init_7_arg_1 = var_5; [L101] state_6 = init_7_arg_1 [L102] SORT_2 init_9_arg_1 = var_5; [L103] state_8 = init_9_arg_1 [L104] SORT_2 init_11_arg_1 = var_5; [L105] state_10 = init_11_arg_1 [L106] SORT_2 init_13_arg_1 = var_5; [L107] state_12 = init_13_arg_1 [L108] SORT_2 init_15_arg_1 = var_5; [L109] state_14 = init_15_arg_1 [L110] SORT_2 init_17_arg_1 = var_5; [L111] state_16 = init_17_arg_1 [L112] SORT_2 init_19_arg_1 = var_5; [L113] state_18 = init_19_arg_1 [L114] SORT_2 init_21_arg_1 = var_5; [L115] state_20 = init_21_arg_1 [L116] SORT_2 init_23_arg_1 = var_5; [L117] state_22 = init_23_arg_1 [L118] SORT_2 init_25_arg_1 = var_5; [L119] state_24 = init_25_arg_1 [L120] SORT_2 init_27_arg_1 = var_5; [L121] state_26 = init_27_arg_1 [L122] SORT_2 init_29_arg_1 = var_5; [L123] state_28 = init_29_arg_1 [L124] SORT_1 init_32_arg_1 = var_30; [L125] state_31 = init_32_arg_1 [L126] SORT_1 init_34_arg_1 = var_30; [L127] state_33 = init_34_arg_1 [L128] SORT_1 init_36_arg_1 = var_30; [L129] state_35 = init_36_arg_1 [L130] SORT_1 init_38_arg_1 = var_30; [L131] state_37 = init_38_arg_1 [L132] SORT_1 init_40_arg_1 = var_30; [L133] state_39 = init_40_arg_1 [L134] SORT_1 init_42_arg_1 = var_30; [L135] state_41 = init_42_arg_1 [L136] SORT_1 init_44_arg_1 = var_30; [L137] state_43 = init_44_arg_1 [L138] SORT_1 init_46_arg_1 = var_30; [L139] state_45 = init_46_arg_1 [L140] SORT_1 init_48_arg_1 = var_30; [L141] state_47 = init_48_arg_1 [L142] SORT_1 init_50_arg_1 = var_30; [L143] state_49 = init_50_arg_1 [L144] SORT_1 init_52_arg_1 = var_30; [L145] state_51 = init_52_arg_1 [L146] SORT_1 init_54_arg_1 = var_30; [L147] state_53 = init_54_arg_1 [L148] SORT_1 init_56_arg_1 = var_30; [L149] state_55 = init_56_arg_1 [L150] SORT_1 init_58_arg_1 = var_30; [L151] state_57 = init_58_arg_1 [L152] SORT_1 init_60_arg_1 = var_30; [L153] state_59 = init_60_arg_1 [L154] SORT_1 init_62_arg_1 = var_30; [L155] state_61 = init_62_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_8=0, var_101=1, var_121=2, var_229=3, var_251=3, var_30=0, var_5=0, var_63=1, var_64=0, var_74=0, var_90=0, var_95=2] [L158] input_73 = __VERIFIER_nondet_uchar() [L159] input_73 = input_73 & mask_SORT_1 [L160] input_75 = __VERIFIER_nondet_uchar() [L161] input_75 = input_75 & mask_SORT_1 [L162] input_79 = __VERIFIER_nondet_uchar() [L163] input_79 = input_79 & mask_SORT_1 [L164] input_80 = __VERIFIER_nondet_uchar() [L165] input_80 = input_80 & mask_SORT_1 [L166] input_84 = __VERIFIER_nondet_uchar() [L167] input_84 = input_84 & mask_SORT_1 [L168] input_85 = __VERIFIER_nondet_uchar() [L169] input_85 = input_85 & mask_SORT_1 [L170] input_89 = __VERIFIER_nondet_uchar() [L171] input_89 = input_89 & mask_SORT_1 [L172] input_96 = __VERIFIER_nondet_uchar() [L173] input_96 = input_96 & mask_SORT_1 [L174] input_102 = __VERIFIER_nondet_uchar() [L175] input_102 = input_102 & mask_SORT_1 [L176] input_132 = __VERIFIER_nondet_uchar() [L177] input_132 = input_132 & mask_SORT_1 [L178] input_135 = __VERIFIER_nondet_uchar() [L179] input_135 = input_135 & mask_SORT_1 [L180] input_139 = __VERIFIER_nondet_uchar() [L181] input_139 = input_139 & mask_SORT_1 [L182] input_146 = __VERIFIER_nondet_uchar() [L183] input_146 = input_146 & mask_SORT_1 [L184] input_149 = __VERIFIER_nondet_uchar() [L185] input_149 = input_149 & mask_SORT_1 [L186] input_153 = __VERIFIER_nondet_uchar() [L187] input_153 = input_153 & mask_SORT_1 [L188] input_160 = __VERIFIER_nondet_uchar() [L189] input_160 = input_160 & mask_SORT_1 [L190] input_163 = __VERIFIER_nondet_uchar() [L191] input_163 = input_163 & mask_SORT_1 [L192] input_167 = __VERIFIER_nondet_uchar() [L193] input_167 = input_167 & mask_SORT_1 [L194] input_177 = __VERIFIER_nondet_uchar() [L195] input_195 = __VERIFIER_nondet_uchar() [L196] input_213 = __VERIFIER_nondet_uchar() [L199] SORT_1 var_65_arg_0 = state_33; [L200] SORT_4 var_65_arg_1 = var_63; [L201] SORT_4 var_65_arg_2 = var_64; [L202] SORT_4 var_65 = var_65_arg_0 ? var_65_arg_1 : var_65_arg_2; [L203] SORT_1 var_66_arg_0 = state_43; [L204] SORT_4 var_66_arg_1 = var_63; [L205] SORT_4 var_66_arg_2 = var_64; [L206] SORT_4 var_66 = var_66_arg_0 ? var_66_arg_1 : var_66_arg_2; [L207] SORT_4 var_67_arg_0 = var_65; [L208] SORT_4 var_67_arg_1 = var_66; [L209] SORT_4 var_67 = var_67_arg_0 + var_67_arg_1; [L210] SORT_1 var_68_arg_0 = state_53; [L211] SORT_4 var_68_arg_1 = var_63; [L212] SORT_4 var_68_arg_2 = var_64; [L213] SORT_4 var_68 = var_68_arg_0 ? var_68_arg_1 : var_68_arg_2; [L214] SORT_4 var_69_arg_0 = var_67; [L215] SORT_4 var_69_arg_1 = var_68; [L216] SORT_4 var_69 = var_69_arg_0 + var_69_arg_1; [L217] var_69 = var_69 & mask_SORT_4 [L218] SORT_4 var_70_arg_0 = var_69; [L219] SORT_4 var_70_arg_1 = var_63; [L220] SORT_1 var_70 = var_70_arg_0 <= var_70_arg_1; [L221] SORT_1 var_71_arg_0 = ~state_61; [L222] var_71_arg_0 = var_71_arg_0 & mask_SORT_1 [L223] SORT_1 var_71_arg_1 = ~var_70; [L224] var_71_arg_1 = var_71_arg_1 & mask_SORT_1 [L225] SORT_1 var_71 = var_71_arg_0 & var_71_arg_1; [L226] var_71 = var_71 & mask_SORT_1 [L227] SORT_1 bad_72_arg_0 = var_71; [L228] CALL __VERIFIER_assert(!(bad_72_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: 0.9s, 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, 0.4s 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 08:07:39,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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 8f104f99b414b05345a916e79d6b0248bda2f8b3b8491a5650a88fecf5c47ec5 --- 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 08:07:42,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:07:42,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:07:42,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:07:42,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:07:42,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:07:42,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:07:42,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:07:42,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:07:42,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:07:42,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:07:42,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:07:42,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:07:42,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:07:42,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:07:42,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:07:42,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:07:42,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:07:42,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:07:42,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:07:42,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:07:42,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:07:42,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:07:42,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:07:42,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:07:42,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:07:42,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:07:42,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:07:42,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:07:42,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:07:42,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:07:42,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:07:42,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:07:42,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:07:42,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:07:42,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:07:42,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:07:42,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:07:42,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:07:42,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:07:42,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:07:42,652 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 08:07:42,702 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:07:42,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:07:42,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:07:42,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:07:42,706 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:07:42,706 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:07:42,706 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:07:42,707 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:07:42,707 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:07:42,707 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:07:42,709 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:07:42,709 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:07:42,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:07:42,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:07:42,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:07:42,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:07:42,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:07:42,713 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 08:07:42,713 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 08:07:42,714 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 08:07:42,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:07:42,714 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:07:42,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:07:42,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:07:42,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 08:07:42,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:07:42,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:07:42,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:07:42,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:07:42,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:07:42,718 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 08:07:42,718 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 08:07:42,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:07:42,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:07:42,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 08:07:42,720 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_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f104f99b414b05345a916e79d6b0248bda2f8b3b8491a5650a88fecf5c47ec5 [2022-11-19 08:07:43,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:07:43,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:07:43,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:07:43,209 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:07:43,210 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:07:43,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.2.prop1-func-interl.c [2022-11-19 08:07:43,307 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/data/42aaf6857/e756a71f60354d6f99ca813c10686f05/FLAG670a816e6 [2022-11-19 08:07:44,149 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:07:44,149 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.2.prop1-func-interl.c [2022-11-19 08:07:44,173 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/data/42aaf6857/e756a71f60354d6f99ca813c10686f05/FLAG670a816e6 [2022-11-19 08:07:44,264 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/data/42aaf6857/e756a71f60354d6f99ca813c10686f05 [2022-11-19 08:07:44,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:07:44,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:07:44,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:07:44,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:07:44,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:07:44,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:07:44" (1/1) ... [2022-11-19 08:07:44,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5597df8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:44, skipping insertion in model container [2022-11-19 08:07:44,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:07:44" (1/1) ... [2022-11-19 08:07:44,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:07:44,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:07:44,669 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_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.2.prop1-func-interl.c[1014,1027] [2022-11-19 08:07:45,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:07:45,046 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:07:45,060 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_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.2.prop1-func-interl.c[1014,1027] [2022-11-19 08:07:45,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:07:45,231 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:07:45,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:45 WrapperNode [2022-11-19 08:07:45,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:07:45,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:07:45,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:07:45,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:07:45,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:45" (1/1) ... [2022-11-19 08:07:45,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:45" (1/1) ... [2022-11-19 08:07:45,378 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1484 [2022-11-19 08:07:45,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:07:45,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:07:45,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:07:45,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:07:45,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:45" (1/1) ... [2022-11-19 08:07:45,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:45" (1/1) ... [2022-11-19 08:07:45,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:45" (1/1) ... [2022-11-19 08:07:45,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:45" (1/1) ... [2022-11-19 08:07:45,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:45" (1/1) ... [2022-11-19 08:07:45,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:45" (1/1) ... [2022-11-19 08:07:45,503 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:45" (1/1) ... [2022-11-19 08:07:45,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:45" (1/1) ... [2022-11-19 08:07:45,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:07:45,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:07:45,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:07:45,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:07:45,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:45" (1/1) ... [2022-11-19 08:07:45,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:07:45,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:07:45,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:07:45,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:07:45,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:07:45,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:07:46,134 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:07:46,137 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:07:49,392 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:07:49,401 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:07:49,401 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:07:49,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:49 BoogieIcfgContainer [2022-11-19 08:07:49,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:07:49,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:07:49,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:07:49,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:07:49,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:07:44" (1/3) ... [2022-11-19 08:07:49,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736c2037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:49, skipping insertion in model container [2022-11-19 08:07:49,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:45" (2/3) ... [2022-11-19 08:07:49,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736c2037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:49, skipping insertion in model container [2022-11-19 08:07:49,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:49" (3/3) ... [2022-11-19 08:07:49,416 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.peterson.2.prop1-func-interl.c [2022-11-19 08:07:49,441 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:07:49,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:07:49,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:07:49,506 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;@24061e4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:07:49,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:07:49,511 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 08:07:49,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 08:07:49,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:49,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 08:07:49,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:49,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:49,527 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-19 08:07:49,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:07:49,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905598162] [2022-11-19 08:07:49,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:49,545 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 08:07:49,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:07:49,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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 08:07:49,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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 08:07:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:50,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-19 08:07:50,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:07:50,652 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 08:07:50,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:07:50,653 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:07:50,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905598162] [2022-11-19 08:07:50,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905598162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:07:50,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:07:50,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:07:50,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977983384] [2022-11-19 08:07:50,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:07:50,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:07:50,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:07:50,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:07:50,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:07:50,714 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 08:07:51,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:07:51,020 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-19 08:07:51,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:07:51,028 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 08:07:51,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:07:51,038 INFO L225 Difference]: With dead ends: 20 [2022-11-19 08:07:51,039 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 08:07:51,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:07:51,046 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:07:51,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 08:07:51,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 08:07:51,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-19 08:07:51,085 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 08:07:51,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 08:07:51,087 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 08:07:51,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:07:51,088 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 08:07:51,089 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 08:07:51,089 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 08:07:51,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:07:51,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:07:51,090 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 08:07:51,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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)] Ended with exit code 0 [2022-11-19 08:07:51,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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 08:07:51,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:07:51,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:07:51,304 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-19 08:07:51,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:07:51,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286453815] [2022-11-19 08:07:51,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:07:51,309 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 08:07:51,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:07:51,311 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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 08:07:51,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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 08:07:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:07:52,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1298 conjuncts, 121 conjunts are in the unsatisfiable core [2022-11-19 08:07:52,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:07:54,430 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 08:07:54,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:08:20,555 WARN L233 SmtUtils]: Spent 21.45s on a formula simplification that was a NOOP. DAG size: 251 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:08:21,390 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 08:08:21,391 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:08:21,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286453815] [2022-11-19 08:08:21,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286453815] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:08:21,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [304307454] [2022-11-19 08:08:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:08:21,398 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:08:21,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:08:21,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:08:21,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 08:08:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:22,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 1298 conjuncts, 123 conjunts are in the unsatisfiable core [2022-11-19 08:08:22,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:24,480 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 08:08:24,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:08:39,898 WARN L233 SmtUtils]: Spent 14.26s on a formula simplification. DAG size of input: 86 DAG size of output: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:10:06,453 WARN L233 SmtUtils]: Spent 1.31m on a formula simplification. DAG size of input: 266 DAG size of output: 263 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:10:07,196 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 08:10:07,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [304307454] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:10:07,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341779724] [2022-11-19 08:10:07,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:07,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:10:07,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:10:07,203 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:10:07,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:10:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:07,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 1298 conjuncts, 126 conjunts are in the unsatisfiable core [2022-11-19 08:10:07,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:10:09,373 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 08:10:09,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:12:07,354 WARN L233 SmtUtils]: Spent 1.87m on a formula simplification. DAG size of input: 125 DAG size of output: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:13:32,357 WARN L233 SmtUtils]: Spent 1.14m on a formula simplification that was a NOOP. DAG size: 295 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:14:48,905 WARN L233 SmtUtils]: Spent 1.15m on a formula simplification that was a NOOP. DAG size: 299 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:14:49,689 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 08:14:49,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341779724] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:14:49,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:14:49,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 16 [2022-11-19 08:14:49,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238095401] [2022-11-19 08:14:49,691 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:14:49,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-19 08:14:49,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:14:49,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-19 08:14:49,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=164, Unknown=12, NotChecked=0, Total=240 [2022-11-19 08:14:49,694 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:14:50,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:14:50,459 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-19 08:14:50,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:14:50,460 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 08:14:50,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:14:50,461 INFO L225 Difference]: With dead ends: 16 [2022-11-19 08:14:50,461 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 08:14:50,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 404.4s TimeCoverageRelationStatistics Valid=87, Invalid=207, Unknown=12, NotChecked=0, Total=306 [2022-11-19 08:14:50,463 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:14:50,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 30 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-11-19 08:14:50,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 08:14:50,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-19 08:14:50,467 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 08:14:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-19 08:14:50,468 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-19 08:14:50,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:14:50,468 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-19 08:14:50,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:14:50,469 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-19 08:14:50,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 08:14:50,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:14:50,470 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 08:14:50,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:14:50,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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 08:14:50,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:14:51,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:14:51,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:14:51,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:14:51,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-19 08:14:51,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:14:51,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050955732] [2022-11-19 08:14:51,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:14:51,086 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 08:14:51,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:14:51,087 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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 08:14:51,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d6ca794-7fb8-4987-b58c-6c0c6797f4b5/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 08:14:52,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:14:52,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:14:52,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 2468 conjuncts, 243 conjunts are in the unsatisfiable core [2022-11-19 08:14:52,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:15:30,687 WARN L233 SmtUtils]: Spent 36.86s on a formula simplification. DAG size of input: 230 DAG size of output: 221 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:15:48,897 WARN L233 SmtUtils]: Spent 12.40s on a formula simplification that was a NOOP. DAG size: 720 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:15:54,868 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 08:15:54,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:16:11,683 WARN L233 SmtUtils]: Spent 15.65s on a formula simplification. DAG size of input: 105 DAG size of output: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)