./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.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_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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 ae120e442d3333a3829560b2dc4c79b941b2f5347f398389c9ef7ff85802ce4e --- 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 08:13:37,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:13:37,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:13:37,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:13:37,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:13:37,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:13:37,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:13:37,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:13:37,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:13:37,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:13:37,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:13:37,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:13:37,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:13:37,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:13:37,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:13:37,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:13:37,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:13:37,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:13:37,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:13:37,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:13:37,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:13:37,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:13:37,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:13:37,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:13:37,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:13:37,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:13:37,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:13:37,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:13:37,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:13:37,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:13:37,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:13:37,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:13:37,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:13:37,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:13:37,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:13:37,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:13:37,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:13:37,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:13:37,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:13:37,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:13:37,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:13:37,791 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:13:37,833 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:13:37,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:13:37,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:13:37,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:13:37,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:13:37,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:13:37,835 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:13:37,835 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:13:37,836 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:13:37,836 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:13:37,837 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:13:37,837 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:13:37,837 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:13:37,837 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:13:37,838 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:13:37,838 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:13:37,838 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:13:37,838 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:13:37,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:13:37,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:13:37,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:13:37,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:13:37,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:13:37,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:13:37,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:13:37,841 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:13:37,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:13:37,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:13:37,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:13:37,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:13:37,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:13:37,843 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:13:37,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:13:37,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:13:37,844 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:13:37,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:13:37,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:13:37,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:13:37,844 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_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae120e442d3333a3829560b2dc4c79b941b2f5347f398389c9ef7ff85802ce4e [2022-11-19 08:13:38,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:13:38,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:13:38,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:13:38,186 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:13:38,187 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:13:38,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c [2022-11-19 08:13:38,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/data/dbd647dea/d79ed2a45d514460925fab757b8beb00/FLAGa0186f41f [2022-11-19 08:13:38,837 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:13:38,837 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c [2022-11-19 08:13:38,850 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/data/dbd647dea/d79ed2a45d514460925fab757b8beb00/FLAGa0186f41f [2022-11-19 08:13:39,125 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/data/dbd647dea/d79ed2a45d514460925fab757b8beb00 [2022-11-19 08:13:39,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:13:39,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:13:39,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:13:39,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:13:39,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:13:39,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:13:39" (1/1) ... [2022-11-19 08:13:39,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb1426d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:39, skipping insertion in model container [2022-11-19 08:13:39,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:13:39" (1/1) ... [2022-11-19 08:13:39,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:13:39,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:13:39,425 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_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c[1107,1120] [2022-11-19 08:13:39,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:13:39,616 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:13:39,627 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_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c[1107,1120] [2022-11-19 08:13:39,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:13:39,834 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:13:39,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:39 WrapperNode [2022-11-19 08:13:39,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:13:39,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:13:39,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:13:39,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:13:39,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:39" (1/1) ... [2022-11-19 08:13:39,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:39" (1/1) ... [2022-11-19 08:13:40,003 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1125 [2022-11-19 08:13:40,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:13:40,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:13:40,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:13:40,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:13:40,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:39" (1/1) ... [2022-11-19 08:13:40,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:39" (1/1) ... [2022-11-19 08:13:40,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:39" (1/1) ... [2022-11-19 08:13:40,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:39" (1/1) ... [2022-11-19 08:13:40,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:39" (1/1) ... [2022-11-19 08:13:40,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:39" (1/1) ... [2022-11-19 08:13:40,091 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:39" (1/1) ... [2022-11-19 08:13:40,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:39" (1/1) ... [2022-11-19 08:13:40,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:13:40,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:13:40,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:13:40,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:13:40,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:39" (1/1) ... [2022-11-19 08:13:40,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:13:40,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:13:40,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:13:40,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:13:40,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:13:40,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:13:40,522 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:13:40,524 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:13:41,527 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:13:42,593 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:13:42,593 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:13:42,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:13:42 BoogieIcfgContainer [2022-11-19 08:13:42,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:13:42,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:13:42,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:13:42,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:13:42,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:13:39" (1/3) ... [2022-11-19 08:13:42,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de5488a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:13:42, skipping insertion in model container [2022-11-19 08:13:42,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:39" (2/3) ... [2022-11-19 08:13:42,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de5488a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:13:42, skipping insertion in model container [2022-11-19 08:13:42,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:13:42" (3/3) ... [2022-11-19 08:13:42,613 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.miim.c [2022-11-19 08:13:42,633 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:13:42,633 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:13:42,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:13:42,705 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;@6e77c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:13:42,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:13:42,709 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 08:13:42,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:13:42,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:42,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:13:42,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:13:42,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:42,725 INFO L85 PathProgramCache]: Analyzing trace with hash 9701327, now seen corresponding path program 1 times [2022-11-19 08:13:42,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:13:42,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101646286] [2022-11-19 08:13:42,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:42,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:13:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:13:43,099 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:13:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:13:43,302 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:13:43,304 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:13:43,305 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 08:13:43,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:13:43,312 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 08:13:43,316 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:13:43,358 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-19 08:13:43,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:13:43 BoogieIcfgContainer [2022-11-19 08:13:43,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:13:43,372 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:13:43,372 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:13:43,372 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:13:43,373 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:13:42" (3/4) ... [2022-11-19 08:13:43,376 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 08:13:43,376 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:13:43,378 INFO L158 Benchmark]: Toolchain (without parser) took 4248.73ms. Allocated memory was 134.2MB in the beginning and 220.2MB in the end (delta: 86.0MB). Free memory was 98.3MB in the beginning and 111.2MB in the end (delta: -12.8MB). Peak memory consumption was 72.3MB. Max. memory is 16.1GB. [2022-11-19 08:13:43,378 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 38.7MB in the beginning and 38.7MB in the end (delta: 40.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:13:43,379 INFO L158 Benchmark]: CACSL2BoogieTranslator took 704.11ms. Allocated memory is still 134.2MB. Free memory was 98.3MB in the beginning and 88.8MB in the end (delta: 9.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 08:13:43,380 INFO L158 Benchmark]: Boogie Procedure Inliner took 170.23ms. Allocated memory is still 134.2MB. Free memory was 88.1MB in the beginning and 79.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 08:13:43,380 INFO L158 Benchmark]: Boogie Preprocessor took 112.16ms. Allocated memory is still 134.2MB. Free memory was 79.7MB in the beginning and 74.8MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 08:13:43,381 INFO L158 Benchmark]: RCFGBuilder took 2483.35ms. Allocated memory was 134.2MB in the beginning and 220.2MB in the end (delta: 86.0MB). Free memory was 74.8MB in the beginning and 156.3MB in the end (delta: -81.5MB). Peak memory consumption was 60.1MB. Max. memory is 16.1GB. [2022-11-19 08:13:43,382 INFO L158 Benchmark]: TraceAbstraction took 766.58ms. Allocated memory is still 220.2MB. Free memory was 155.2MB in the beginning and 112.2MB in the end (delta: 43.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2022-11-19 08:13:43,382 INFO L158 Benchmark]: Witness Printer took 4.64ms. Allocated memory is still 220.2MB. Free memory was 112.2MB in the beginning and 111.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:13:43,386 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 38.7MB in the beginning and 38.7MB in the end (delta: 40.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 704.11ms. Allocated memory is still 134.2MB. Free memory was 98.3MB in the beginning and 88.8MB in the end (delta: 9.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 170.23ms. Allocated memory is still 134.2MB. Free memory was 88.1MB in the beginning and 79.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 112.16ms. Allocated memory is still 134.2MB. Free memory was 79.7MB in the beginning and 74.8MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2483.35ms. Allocated memory was 134.2MB in the beginning and 220.2MB in the end (delta: 86.0MB). Free memory was 74.8MB in the beginning and 156.3MB in the end (delta: -81.5MB). Peak memory consumption was 60.1MB. Max. memory is 16.1GB. * TraceAbstraction took 766.58ms. Allocated memory is still 220.2MB. Free memory was 155.2MB in the beginning and 112.2MB in the end (delta: 43.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Witness Printer took 4.64ms. Allocated memory is still 220.2MB. Free memory was 112.2MB in the beginning and 111.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 298, overapproximation of bitwiseComplement at line 295, overapproximation of bitwiseAnd at line 222. 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_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 16); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (16 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 8); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (8 - 1); [L34] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 5); [L35] const SORT_7 msb_SORT_7 = (SORT_7)1 << (5 - 1); [L37] const SORT_20 mask_SORT_20 = (SORT_20)-1 >> (sizeof(SORT_20) * 8 - 32); [L38] const SORT_20 msb_SORT_20 = (SORT_20)1 << (32 - 1); [L40] const SORT_51 mask_SORT_51 = (SORT_51)-1 >> (sizeof(SORT_51) * 8 - 6); [L41] const SORT_51 msb_SORT_51 = (SORT_51)1 << (6 - 1); [L43] const SORT_66 mask_SORT_66 = (SORT_66)-1 >> (sizeof(SORT_66) * 8 - 25); [L44] const SORT_66 msb_SORT_66 = (SORT_66)1 << (25 - 1); [L46] const SORT_68 mask_SORT_68 = (SORT_68)-1 >> (sizeof(SORT_68) * 8 - 7); [L47] const SORT_68 msb_SORT_68 = (SORT_68)1 << (7 - 1); [L49] const SORT_88 mask_SORT_88 = (SORT_88)-1 >> (sizeof(SORT_88) * 8 - 2); [L50] const SORT_88 msb_SORT_88 = (SORT_88)1 << (2 - 1); [L52] const SORT_126 mask_SORT_126 = (SORT_126)-1 >> (sizeof(SORT_126) * 8 - 3); [L53] const SORT_126 msb_SORT_126 = (SORT_126)1 << (3 - 1); [L55] const SORT_1 var_17 = 0; [L56] const SORT_20 var_22 = 1; [L57] const SORT_1 var_47 = 1; [L58] const SORT_51 var_52 = 0; [L59] const SORT_5 var_56 = 0; [L60] const SORT_5 var_61 = 2; [L61] const SORT_20 var_63 = 2; [L62] const SORT_66 var_67 = 0; [L63] const SORT_20 var_116 = 0; [L64] const SORT_51 var_254 = 33; [L65] const SORT_5 var_273 = 1; [L67] SORT_1 input_2; [L68] SORT_3 input_4; [L69] SORT_5 input_6; [L70] SORT_7 input_8; [L71] SORT_1 input_9; [L72] SORT_1 input_10; [L73] SORT_1 input_11; [L74] SORT_1 input_12; [L75] SORT_7 input_13; [L76] SORT_1 input_14; [L77] SORT_1 input_15; [L78] SORT_1 input_16; [L79] SORT_1 input_80; [L80] SORT_88 input_89; [L81] SORT_1 input_91; [L82] SORT_1 input_93; [L83] SORT_1 input_95; [L84] SORT_1 input_99; [L85] SORT_1 input_103; [L86] SORT_1 input_105; [L87] SORT_1 input_109; [L88] SORT_1 input_138; [L89] SORT_1 input_144; [L90] SORT_1 input_153; [L91] SORT_1 input_155; [L92] SORT_1 input_157; [L93] SORT_7 input_166; [L94] SORT_1 input_168; [L95] SORT_3 input_170; [L96] SORT_5 input_172; [L97] SORT_1 input_183; [L98] SORT_1 input_185; [L99] SORT_1 input_198; [L100] SORT_1 input_200; [L101] SORT_1 input_203; [L102] SORT_1 input_210; [L103] SORT_1 input_212; [L104] SORT_1 input_215; [L105] SORT_1 input_220; [L106] SORT_1 input_228; [L107] SORT_1 input_229; [L108] SORT_1 input_231; [L109] SORT_1 input_234; [L110] SORT_1 input_238; [L111] SORT_1 input_241; [L112] SORT_1 input_246; [L113] SORT_51 input_250; [L114] SORT_51 input_251; [L115] SORT_51 input_258; [L116] SORT_51 input_262; [L117] SORT_51 input_266; [L118] SORT_51 input_269; [L119] SORT_5 input_276; [L120] SORT_1 input_283; [L121] SORT_1 input_288; [L122] SORT_1 input_293; [L123] SORT_1 input_300; [L124] SORT_1 input_308; [L125] SORT_1 input_312; [L126] SORT_1 input_313; [L127] SORT_1 input_315; [L128] SORT_1 input_318; [L129] SORT_1 input_320; [L130] SORT_1 input_321; [L131] SORT_1 input_326; [L132] SORT_1 input_330; [L133] SORT_1 input_333; [L134] SORT_1 input_338; [L135] SORT_1 input_343; [L136] SORT_1 input_352; [L137] SORT_1 input_357; [L139] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L140] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L141] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L142] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L143] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L144] SORT_1 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L145] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L146] SORT_51 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_51; [L147] SORT_5 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L148] SORT_1 state_74 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L149] SORT_1 state_84 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L150] SORT_1 state_86 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L151] SORT_1 state_97 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L152] SORT_1 state_101 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L153] SORT_1 state_107 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L154] SORT_1 state_111 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L155] SORT_1 state_140 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L156] SORT_1 state_142 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L157] SORT_1 state_146 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L158] SORT_1 state_148 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L159] SORT_1 state_174 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L160] SORT_1 state_176 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L161] SORT_1 state_187 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L162] SORT_1 state_189 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L164] SORT_1 init_19_arg_1 = var_17; [L165] state_18 = init_19_arg_1 [L166] SORT_1 init_26_arg_1 = var_17; [L167] state_25 = init_26_arg_1 [L168] SORT_1 init_28_arg_1 = var_17; [L169] state_27 = init_28_arg_1 [L170] SORT_1 init_31_arg_1 = var_17; [L171] state_30 = init_31_arg_1 [L172] SORT_1 init_34_arg_1 = var_17; [L173] state_33 = init_34_arg_1 [L174] SORT_1 init_37_arg_1 = var_17; [L175] state_36 = init_37_arg_1 [L176] SORT_1 init_40_arg_1 = var_17; [L177] state_39 = init_40_arg_1 [L178] SORT_51 init_54_arg_1 = var_52; [L179] state_53 = init_54_arg_1 [L180] SORT_5 init_58_arg_1 = var_56; [L181] state_57 = init_58_arg_1 [L182] SORT_1 init_75_arg_1 = var_17; [L183] state_74 = init_75_arg_1 [L184] SORT_1 init_85_arg_1 = var_17; [L185] state_84 = init_85_arg_1 [L186] SORT_1 init_87_arg_1 = var_17; [L187] state_86 = init_87_arg_1 [L188] SORT_1 init_98_arg_1 = var_17; [L189] state_97 = init_98_arg_1 [L190] SORT_1 init_102_arg_1 = var_17; [L191] state_101 = init_102_arg_1 [L192] SORT_1 init_108_arg_1 = var_17; [L193] state_107 = init_108_arg_1 [L194] SORT_1 init_112_arg_1 = var_17; [L195] state_111 = init_112_arg_1 [L196] SORT_1 init_141_arg_1 = var_17; [L197] state_140 = init_141_arg_1 [L198] SORT_1 init_143_arg_1 = var_17; [L199] state_142 = init_143_arg_1 [L200] SORT_1 init_147_arg_1 = var_17; [L201] state_146 = init_147_arg_1 [L202] SORT_1 init_149_arg_1 = var_17; [L203] state_148 = init_149_arg_1 [L204] SORT_1 init_175_arg_1 = var_17; [L205] state_174 = init_175_arg_1 [L206] SORT_1 init_177_arg_1 = var_17; [L207] state_176 = init_177_arg_1 [L208] SORT_1 init_188_arg_1 = var_17; [L209] state_187 = init_188_arg_1 [L210] SORT_1 init_190_arg_1 = var_17; [L211] state_189 = init_190_arg_1 VAL [init_102_arg_1=0, init_108_arg_1=0, init_112_arg_1=0, init_141_arg_1=0, init_143_arg_1=0, init_147_arg_1=0, init_149_arg_1=0, init_175_arg_1=0, init_177_arg_1=0, init_188_arg_1=0, init_190_arg_1=0, init_19_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_54_arg_1=0, init_58_arg_1=0, init_75_arg_1=0, init_85_arg_1=0, init_87_arg_1=0, init_98_arg_1=0, mask_SORT_1=1, mask_SORT_126=7, mask_SORT_20=4294967295, mask_SORT_3=65535, mask_SORT_5=255, mask_SORT_51=63, mask_SORT_66=4294967295, mask_SORT_68=127, mask_SORT_7=31, mask_SORT_88=3, msb_SORT_1=1, msb_SORT_126=4, msb_SORT_20=2147483648, msb_SORT_3=32768, msb_SORT_5=128, msb_SORT_51=32, msb_SORT_66=16777216, msb_SORT_68=64, msb_SORT_7=16, msb_SORT_88=2, state_101=0, state_107=0, state_111=0, state_140=0, state_142=0, state_146=0, state_148=0, state_174=0, state_176=0, state_18=0, state_187=0, state_189=0, state_25=0, state_27=0, state_30=0, state_33=0, state_36=0, state_39=0, state_53=0, state_57=0, state_74=0, state_84=0, state_86=0, state_97=0, var_116=0, var_17=0, var_22=1, var_254=33, var_273=1, var_47=1, var_52=0, var_56=0, var_61=2, var_63=2, var_67=0] [L214] input_2 = __VERIFIER_nondet_uchar() [L215] input_4 = __VERIFIER_nondet_ushort() [L216] input_6 = __VERIFIER_nondet_uchar() [L217] input_8 = __VERIFIER_nondet_uchar() [L218] input_9 = __VERIFIER_nondet_uchar() [L219] input_10 = __VERIFIER_nondet_uchar() [L220] input_11 = __VERIFIER_nondet_uchar() [L221] input_12 = __VERIFIER_nondet_uchar() [L222] input_12 = input_12 & mask_SORT_1 [L223] input_13 = __VERIFIER_nondet_uchar() [L224] input_14 = __VERIFIER_nondet_uchar() [L225] input_15 = __VERIFIER_nondet_uchar() [L226] input_16 = __VERIFIER_nondet_uchar() [L227] input_80 = __VERIFIER_nondet_uchar() [L228] input_89 = __VERIFIER_nondet_uchar() [L229] input_91 = __VERIFIER_nondet_uchar() [L230] input_93 = __VERIFIER_nondet_uchar() [L231] input_95 = __VERIFIER_nondet_uchar() [L232] input_99 = __VERIFIER_nondet_uchar() [L233] input_103 = __VERIFIER_nondet_uchar() [L234] input_105 = __VERIFIER_nondet_uchar() [L235] input_109 = __VERIFIER_nondet_uchar() [L236] input_138 = __VERIFIER_nondet_uchar() [L237] input_144 = __VERIFIER_nondet_uchar() [L238] input_153 = __VERIFIER_nondet_uchar() [L239] input_155 = __VERIFIER_nondet_uchar() [L240] input_157 = __VERIFIER_nondet_uchar() [L241] input_166 = __VERIFIER_nondet_uchar() [L242] input_168 = __VERIFIER_nondet_uchar() [L243] input_170 = __VERIFIER_nondet_ushort() [L244] input_172 = __VERIFIER_nondet_uchar() [L245] input_183 = __VERIFIER_nondet_uchar() [L246] input_185 = __VERIFIER_nondet_uchar() [L247] input_198 = __VERIFIER_nondet_uchar() [L248] input_200 = __VERIFIER_nondet_uchar() [L249] input_203 = __VERIFIER_nondet_uchar() [L250] input_210 = __VERIFIER_nondet_uchar() [L251] input_212 = __VERIFIER_nondet_uchar() [L252] input_215 = __VERIFIER_nondet_uchar() [L253] input_220 = __VERIFIER_nondet_uchar() [L254] input_228 = __VERIFIER_nondet_uchar() [L255] input_229 = __VERIFIER_nondet_uchar() [L256] input_231 = __VERIFIER_nondet_uchar() [L257] input_234 = __VERIFIER_nondet_uchar() [L258] input_238 = __VERIFIER_nondet_uchar() [L259] input_241 = __VERIFIER_nondet_uchar() [L260] input_246 = __VERIFIER_nondet_uchar() [L261] input_250 = __VERIFIER_nondet_uchar() [L262] input_251 = __VERIFIER_nondet_uchar() [L263] input_258 = __VERIFIER_nondet_uchar() [L264] input_262 = __VERIFIER_nondet_uchar() [L265] input_266 = __VERIFIER_nondet_uchar() [L266] input_269 = __VERIFIER_nondet_uchar() [L267] input_276 = __VERIFIER_nondet_uchar() [L268] input_283 = __VERIFIER_nondet_uchar() [L269] input_288 = __VERIFIER_nondet_uchar() [L270] input_293 = __VERIFIER_nondet_uchar() [L271] input_300 = __VERIFIER_nondet_uchar() [L272] input_308 = __VERIFIER_nondet_uchar() [L273] input_312 = __VERIFIER_nondet_uchar() [L274] input_313 = __VERIFIER_nondet_uchar() [L275] input_315 = __VERIFIER_nondet_uchar() [L276] input_318 = __VERIFIER_nondet_uchar() [L277] input_320 = __VERIFIER_nondet_uchar() [L278] input_321 = __VERIFIER_nondet_uchar() [L279] input_326 = __VERIFIER_nondet_uchar() [L280] input_330 = __VERIFIER_nondet_uchar() [L281] input_333 = __VERIFIER_nondet_uchar() [L282] input_338 = __VERIFIER_nondet_uchar() [L283] input_343 = __VERIFIER_nondet_uchar() [L284] input_352 = __VERIFIER_nondet_uchar() [L285] input_357 = __VERIFIER_nondet_uchar() [L288] SORT_1 var_21_arg_0 = state_18; [L289] var_21_arg_0 = var_21_arg_0 & mask_SORT_1 [L290] SORT_20 var_21 = var_21_arg_0; [L291] SORT_20 var_23_arg_0 = var_21; [L292] SORT_20 var_23_arg_1 = var_22; [L293] SORT_1 var_23 = var_23_arg_0 == var_23_arg_1; [L294] SORT_1 var_24_arg_0 = var_23; [L295] SORT_1 var_24 = ~var_24_arg_0; [L296] SORT_1 var_29_arg_0 = state_25; [L297] SORT_1 var_29_arg_1 = state_27; [L298] SORT_1 var_29 = var_29_arg_0 | var_29_arg_1; [L299] SORT_1 var_32_arg_0 = var_29; [L300] SORT_1 var_32_arg_1 = state_30; [L301] SORT_1 var_32 = var_32_arg_0 | var_32_arg_1; [L302] SORT_1 var_35_arg_0 = var_32; [L303] SORT_1 var_35_arg_1 = state_33; [L304] SORT_1 var_35 = var_35_arg_0 | var_35_arg_1; [L305] SORT_1 var_38_arg_0 = var_35; [L306] SORT_1 var_38_arg_1 = state_36; [L307] SORT_1 var_38 = var_38_arg_0 | var_38_arg_1; [L308] SORT_1 var_41_arg_0 = var_38; [L309] SORT_1 var_41_arg_1 = state_39; [L310] SORT_1 var_41 = var_41_arg_0 | var_41_arg_1; [L311] SORT_1 var_42_arg_0 = var_41; [L312] var_42_arg_0 = var_42_arg_0 & mask_SORT_1 [L313] SORT_20 var_42 = var_42_arg_0; [L314] SORT_20 var_43_arg_0 = var_42; [L315] SORT_20 var_43_arg_1 = var_22; [L316] SORT_1 var_43 = var_43_arg_0 == var_43_arg_1; [L317] SORT_1 var_44_arg_0 = var_24; [L318] SORT_1 var_44_arg_1 = var_43; [L319] SORT_1 var_44 = var_44_arg_0 | var_44_arg_1; [L320] SORT_1 var_48_arg_0 = var_44; [L321] SORT_1 var_48 = ~var_48_arg_0; [L322] SORT_1 var_49_arg_0 = var_47; [L323] SORT_1 var_49_arg_1 = var_48; [L324] SORT_1 var_49 = var_49_arg_0 & var_49_arg_1; [L325] var_49 = var_49 & mask_SORT_1 [L326] SORT_1 bad_50_arg_0 = var_49; [L327] CALL __VERIFIER_assert(!(bad_50_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: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 08:13:43,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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 ae120e442d3333a3829560b2dc4c79b941b2f5347f398389c9ef7ff85802ce4e --- 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 08:13:45,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:13:45,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:13:45,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:13:45,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:13:45,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:13:45,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:13:45,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:13:45,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:13:45,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:13:45,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:13:45,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:13:45,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:13:45,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:13:45,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:13:45,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:13:45,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:13:45,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:13:45,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:13:45,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:13:45,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:13:45,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:13:45,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:13:45,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:13:45,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:13:45,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:13:45,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:13:45,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:13:45,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:13:45,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:13:45,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:13:45,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:13:45,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:13:45,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:13:45,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:13:45,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:13:45,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:13:45,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:13:45,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:13:45,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:13:45,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:13:45,937 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 08:13:45,992 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:13:45,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:13:45,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:13:45,994 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:13:45,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:13:45,995 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:13:45,996 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:13:45,996 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:13:45,996 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:13:45,996 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:13:45,998 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:13:45,998 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:13:46,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:13:46,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:13:46,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:13:46,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:13:46,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:13:46,001 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 08:13:46,001 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 08:13:46,001 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 08:13:46,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:13:46,002 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:13:46,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:13:46,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:13:46,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 08:13:46,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:13:46,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:13:46,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:13:46,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:13:46,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:13:46,004 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 08:13:46,004 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 08:13:46,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:13:46,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:13:46,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 08:13:46,006 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_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae120e442d3333a3829560b2dc4c79b941b2f5347f398389c9ef7ff85802ce4e [2022-11-19 08:13:46,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:13:46,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:13:46,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:13:46,412 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:13:46,413 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:13:46,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c [2022-11-19 08:13:46,478 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/data/af6baf5e5/07620c46ada14300b25ede05dd50e2fb/FLAG7eee71168 [2022-11-19 08:13:47,134 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:13:47,134 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c [2022-11-19 08:13:47,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/data/af6baf5e5/07620c46ada14300b25ede05dd50e2fb/FLAG7eee71168 [2022-11-19 08:13:47,408 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/data/af6baf5e5/07620c46ada14300b25ede05dd50e2fb [2022-11-19 08:13:47,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:13:47,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:13:47,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:13:47,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:13:47,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:13:47,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:13:47" (1/1) ... [2022-11-19 08:13:47,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c983b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:47, skipping insertion in model container [2022-11-19 08:13:47,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:13:47" (1/1) ... [2022-11-19 08:13:47,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:13:47,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:13:47,712 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_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c[1107,1120] [2022-11-19 08:13:47,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:13:47,957 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:13:47,968 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_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c[1107,1120] [2022-11-19 08:13:48,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:13:48,166 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:13:48,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:48 WrapperNode [2022-11-19 08:13:48,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:13:48,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:13:48,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:13:48,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:13:48,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:48" (1/1) ... [2022-11-19 08:13:48,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:48" (1/1) ... [2022-11-19 08:13:48,331 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 978 [2022-11-19 08:13:48,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:13:48,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:13:48,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:13:48,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:13:48,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:48" (1/1) ... [2022-11-19 08:13:48,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:48" (1/1) ... [2022-11-19 08:13:48,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:48" (1/1) ... [2022-11-19 08:13:48,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:48" (1/1) ... [2022-11-19 08:13:48,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:48" (1/1) ... [2022-11-19 08:13:48,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:48" (1/1) ... [2022-11-19 08:13:48,443 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:48" (1/1) ... [2022-11-19 08:13:48,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:48" (1/1) ... [2022-11-19 08:13:48,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:13:48,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:13:48,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:13:48,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:13:48,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:48" (1/1) ... [2022-11-19 08:13:48,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:13:48,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:13:48,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:13:48,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:13:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:13:48,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:13:48,933 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:13:48,935 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:13:49,899 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:13:49,906 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:13:49,906 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:13:49,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:13:49 BoogieIcfgContainer [2022-11-19 08:13:49,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:13:49,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:13:49,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:13:49,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:13:49,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:13:47" (1/3) ... [2022-11-19 08:13:49,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659ab233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:13:49, skipping insertion in model container [2022-11-19 08:13:49,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:13:48" (2/3) ... [2022-11-19 08:13:49,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659ab233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:13:49, skipping insertion in model container [2022-11-19 08:13:49,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:13:49" (3/3) ... [2022-11-19 08:13:49,917 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.miim.c [2022-11-19 08:13:49,938 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:13:49,938 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:13:50,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:13:50,017 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;@286a27b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:13:50,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:13:50,024 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 08:13:50,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 08:13:50,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:50,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 08:13:50,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:13:50,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:50,039 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-19 08:13:50,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:13:50,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084267740] [2022-11-19 08:13:50,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:50,057 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 08:13:50,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:13:50,063 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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 08:13:50,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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 08:13:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:50,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-19 08:13:50,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:13:50,575 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 08:13:50,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:13:50,576 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:13:50,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084267740] [2022-11-19 08:13:50,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084267740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:13:50,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:13:50,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:13:50,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418445150] [2022-11-19 08:13:50,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:13:50,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:13:50,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:13:50,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:13:50,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:13:50,627 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 08:13:50,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:13:50,763 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-19 08:13:50,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:13:50,769 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 08:13:50,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:13:50,778 INFO L225 Difference]: With dead ends: 20 [2022-11-19 08:13:50,779 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 08:13:50,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:13:50,789 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:13:50,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:13:50,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 08:13:50,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-19 08:13:50,820 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 08:13:50,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 08:13:50,822 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 08:13:50,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:13:50,823 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 08:13:50,823 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 08:13:50,824 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 08:13:50,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:13:50,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:50,824 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 08:13:50,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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 08:13:51,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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 08:13:51,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:13:51,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:51,039 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-19 08:13:51,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:13:51,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747734042] [2022-11-19 08:13:51,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:51,041 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 08:13:51,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:13:51,043 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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 08:13:51,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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 08:13:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:51,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-19 08:13:51,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:13:51,831 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 08:13:51,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:13:52,129 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 08:13:52,130 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:13:52,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747734042] [2022-11-19 08:13:52,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747734042] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:13:52,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1488506934] [2022-11-19 08:13:52,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:52,135 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:13:52,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:13:52,141 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:13:52,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 08:13:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:53,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-19 08:13:53,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:13:53,151 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 08:13:53,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:13:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:13:53,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1488506934] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:13:53,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275048922] [2022-11-19 08:13:53,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:53,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:13:53,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:13:53,309 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:13:53,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:13:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:53,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-19 08:13:53,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:13:53,922 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 08:13:53,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:13:54,124 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 08:13:54,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275048922] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:13:54,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:13:54,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-11-19 08:13:54,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963522742] [2022-11-19 08:13:54,131 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:13:54,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 08:13:54,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:13:54,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 08:13:54,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-19 08:13:54,133 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:13:54,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:13:54,380 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-19 08:13:54,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 08:13:54,381 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 08:13:54,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:13:54,381 INFO L225 Difference]: With dead ends: 16 [2022-11-19 08:13:54,381 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 08:13:54,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:13:54,383 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:13:54,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 24 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 16 Unchecked, 0.2s Time] [2022-11-19 08:13:54,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 08:13:54,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-19 08:13:54,387 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 08:13:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-19 08:13:54,388 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-19 08:13:54,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:13:54,389 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-19 08:13:54,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:13:54,389 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-19 08:13:54,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 08:13:54,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:54,390 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 08:13:54,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:13:54,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:13:54,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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 08:13:54,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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 08:13:54,991 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:13:54,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:54,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-19 08:13:54,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:13:54,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972715616] [2022-11-19 08:13:54,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:13:54,994 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 08:13:54,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:13:54,996 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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 08:13:55,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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 08:13:55,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:13:55,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:13:55,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-19 08:13:55,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:13:56,274 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 08:13:56,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:14:01,893 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 08:14:01,893 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:14:01,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972715616] [2022-11-19 08:14:01,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972715616] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:14:01,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [430819872] [2022-11-19 08:14:01,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:14:01,894 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:14:01,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:14:01,896 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:14:01,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-19 08:14:03,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:14:03,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:14:03,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-19 08:14:03,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:14:03,767 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 08:14:03,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:14:08,447 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 08:14:08,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [430819872] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:14:08,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506393689] [2022-11-19 08:14:08,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:14:08,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:14:08,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:14:08,452 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:14:08,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 08:14:09,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:14:09,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:14:09,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-19 08:14:09,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:14:09,515 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 08:14:09,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:14:12,256 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 08:14:12,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506393689] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:14:12,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:14:12,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6, 6, 7, 7] total 16 [2022-11-19 08:14:12,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889188864] [2022-11-19 08:14:12,257 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:14:12,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-19 08:14:12,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:14:12,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-19 08:14:12,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=182, Unknown=3, NotChecked=0, Total=240 [2022-11-19 08:14:12,261 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 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 08:14:12,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:14:12,640 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-19 08:14:12,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 08:14:12,642 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 08:14:12,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:14:12,642 INFO L225 Difference]: With dead ends: 19 [2022-11-19 08:14:12,642 INFO L226 Difference]: Without dead ends: 17 [2022-11-19 08:14:12,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 40 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=113, Invalid=346, Unknown=3, NotChecked=0, Total=462 [2022-11-19 08:14:12,643 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:14:12,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 30 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 21 Unchecked, 0.2s Time] [2022-11-19 08:14:12,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-19 08:14:12,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-19 08:14:12,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:14:12,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-19 08:14:12,650 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-19 08:14:12,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:14:12,650 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-19 08:14:12,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 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 08:14:12,651 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-19 08:14:12,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 08:14:12,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:14:12,651 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-19 08:14:12,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:14:12,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 08:14:13,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-19 08:14:13,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 08:14:13,264 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:14:13,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:14:13,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-19 08:14:13,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:14:13,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141546817] [2022-11-19 08:14:13,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:14:13,267 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 08:14:13,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:14:13,268 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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 08:14:13,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 08:14:14,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-19 08:14:14,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:14:14,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 2224 conjuncts, 160 conjunts are in the unsatisfiable core [2022-11-19 08:14:14,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:14:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:14:15,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:15:45,048 WARN L233 SmtUtils]: Spent 1.41m on a formula simplification. DAG size of input: 479 DAG size of output: 294 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:16:03,337 WARN L233 SmtUtils]: Spent 13.93s on a formula simplification. DAG size of input: 294 DAG size of output: 276 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:16:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:16:03,354 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:16:03,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141546817] [2022-11-19 08:16:03,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141546817] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:16:03,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [829543114] [2022-11-19 08:16:03,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:16:03,355 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:16:03,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:16:03,363 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:16:03,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-19 08:16:05,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-19 08:16:05,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:16:05,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 2224 conjuncts, 165 conjunts are in the unsatisfiable core [2022-11-19 08:16:05,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:16:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:16:06,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:17:08,867 WARN L233 SmtUtils]: Spent 50.59s on a formula simplification. DAG size of input: 469 DAG size of output: 280 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:17:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:17:08,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [829543114] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:17:08,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333503625] [2022-11-19 08:17:08,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:17:08,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:17:08,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:17:08,995 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:17:09,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 08:17:09,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-19 08:17:09,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:17:09,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 2224 conjuncts, 265 conjunts are in the unsatisfiable core [2022-11-19 08:17:09,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:17:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:17:13,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:19:30,417 WARN L233 SmtUtils]: Spent 2.00m on a formula simplification. DAG size of input: 461 DAG size of output: 300 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:19:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:19:37,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333503625] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:19:37,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:19:37,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7, 7, 8, 8] total 21 [2022-11-19 08:19:37,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429487559] [2022-11-19 08:19:37,009 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:19:37,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-19 08:19:37,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:19:37,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-19 08:19:37,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=334, Unknown=15, NotChecked=0, Total=420 [2022-11-19 08:19:37,011 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 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 08:19:37,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:19:37,919 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-11-19 08:19:37,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 08:19:37,920 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-19 08:19:37,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:19:37,920 INFO L225 Difference]: With dead ends: 20 [2022-11-19 08:19:37,920 INFO L226 Difference]: Without dead ends: 18 [2022-11-19 08:19:37,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 302.7s TimeCoverageRelationStatistics Valid=183, Invalid=614, Unknown=15, NotChecked=0, Total=812 [2022-11-19 08:19:37,922 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:19:37,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 39 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 20 Unchecked, 0.1s Time] [2022-11-19 08:19:37,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-19 08:19:37,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-19 08:19:37,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:19:37,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-19 08:19:37,928 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-11-19 08:19:37,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:19:37,928 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-19 08:19:37,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 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 08:19:37,929 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-19 08:19:37,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 08:19:37,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:19:37,929 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-19 08:19:37,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-19 08:19:38,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 08:19:38,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-19 08:19:38,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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 08:19:38,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:19:38,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:19:38,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 4 times [2022-11-19 08:19:38,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:19:38,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173577292] [2022-11-19 08:19:38,538 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 08:19:38,538 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 08:19:38,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:19:38,539 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/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 08:19:38,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ba23452-29e9-4bf3-a80d-a98d4adb55d9/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-19 08:19:39,564 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 08:19:39,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:19:39,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 2901 conjuncts, 385 conjunts are in the unsatisfiable core [2022-11-19 08:19:39,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:10,110 WARN L233 SmtUtils]: Spent 1.20m on a formula simplification. DAG size of input: 377 DAG size of output: 174 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:21:24,562 WARN L233 SmtUtils]: Spent 12.22s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:21:46,415 WARN L233 SmtUtils]: Spent 18.66s on a formula simplification. DAG size of input: 208 DAG size of output: 130 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:21:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:46,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:26:29,978 WARN L233 SmtUtils]: Spent 4.52m on a formula simplification. DAG size of input: 497 DAG size of output: 280 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:28:35,336 WARN L233 SmtUtils]: Spent 2.04m on a formula simplification. DAG size of input: 281 DAG size of output: 271 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)