./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash de3432be659aeb068d9578abe855cccd372c2dcc53965b366fbb1d4a71898931 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:27:03,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:27:03,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:27:03,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:27:03,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:27:03,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:27:03,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:27:03,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:27:03,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:27:03,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:27:03,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:27:03,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:27:03,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:27:03,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:27:03,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:27:03,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:27:03,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:27:03,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:27:03,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:27:03,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:27:03,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:27:03,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:27:03,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:27:03,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:27:03,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:27:03,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:27:03,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:27:03,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:27:03,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:27:03,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:27:03,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:27:03,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:27:03,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:27:03,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:27:03,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:27:03,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:27:03,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:27:03,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:27:03,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:27:03,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:27:03,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:27:03,319 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:27:03,357 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:27:03,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:27:03,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:27:03,358 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:27:03,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:27:03,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:27:03,360 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:27:03,360 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:27:03,360 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:27:03,361 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:27:03,361 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:27:03,361 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:27:03,362 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:27:03,362 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:27:03,362 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:27:03,363 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:27:03,363 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:27:03,363 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:27:03,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:27:03,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:27:03,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:27:03,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:27:03,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:27:03,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:27:03,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:27:03,366 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:27:03,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:27:03,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:27:03,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:27:03,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:27:03,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:27:03,368 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:27:03,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:27:03,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:27:03,369 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:27:03,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:27:03,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:27:03,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:27:03,370 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_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de3432be659aeb068d9578abe855cccd372c2dcc53965b366fbb1d4a71898931 [2022-11-26 00:27:03,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:27:03,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:27:03,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:27:03,677 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:27:03,678 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:27:03,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c [2022-11-26 00:27:07,227 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:27:07,614 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:27:07,617 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c [2022-11-26 00:27:07,638 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/data/45b0c84da/cf0a51afdd694b55bd6501cc07e13470/FLAGecdb9263e [2022-11-26 00:27:07,661 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/data/45b0c84da/cf0a51afdd694b55bd6501cc07e13470 [2022-11-26 00:27:07,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:27:07,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:27:07,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:27:07,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:27:07,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:27:07,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:27:07" (1/1) ... [2022-11-26 00:27:07,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb594d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:07, skipping insertion in model container [2022-11-26 00:27:07,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:27:07" (1/1) ... [2022-11-26 00:27:07,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:27:07,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:27:08,038 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c[1107,1120] [2022-11-26 00:27:08,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:27:08,388 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:27:08,403 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c[1107,1120] [2022-11-26 00:27:08,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:27:08,613 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:27:08,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:08 WrapperNode [2022-11-26 00:27:08,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:27:08,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:27:08,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:27:08,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:27:08,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:08" (1/1) ... [2022-11-26 00:27:08,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:08" (1/1) ... [2022-11-26 00:27:08,825 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1420 [2022-11-26 00:27:08,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:27:08,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:27:08,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:27:08,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:27:08,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:08" (1/1) ... [2022-11-26 00:27:08,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:08" (1/1) ... [2022-11-26 00:27:08,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:08" (1/1) ... [2022-11-26 00:27:08,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:08" (1/1) ... [2022-11-26 00:27:08,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:08" (1/1) ... [2022-11-26 00:27:08,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:08" (1/1) ... [2022-11-26 00:27:08,947 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:08" (1/1) ... [2022-11-26 00:27:08,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:08" (1/1) ... [2022-11-26 00:27:08,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:27:08,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:27:08,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:27:08,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:27:08,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:08" (1/1) ... [2022-11-26 00:27:09,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:27:09,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:27:09,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:27:09,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:27:09,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:27:09,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:27:09,709 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:27:09,712 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:27:16,177 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:27:16,215 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:27:16,215 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:27:16,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:27:16 BoogieIcfgContainer [2022-11-26 00:27:16,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:27:16,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:27:16,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:27:16,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:27:16,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:27:07" (1/3) ... [2022-11-26 00:27:16,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f90ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:27:16, skipping insertion in model container [2022-11-26 00:27:16,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:08" (2/3) ... [2022-11-26 00:27:16,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f90ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:27:16, skipping insertion in model container [2022-11-26 00:27:16,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:27:16" (3/3) ... [2022-11-26 00:27:16,240 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b03.c [2022-11-26 00:27:16,264 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:27:16,265 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:27:16,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:27:16,349 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;@4bdc266f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:27:16,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:27:16,354 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:27:16,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:27:16,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:27:16,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:27:16,362 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:27:16,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:27:16,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-26 00:27:16,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:27:16,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403870011] [2022-11-26 00:27:16,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:27:16,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:27:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:27:16,929 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:27:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:27:17,355 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:27:17,363 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:27:17,365 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-26 00:27:17,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:27:17,375 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:27:17,380 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:27:17,433 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-26 00:27:17,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:27:17 BoogieIcfgContainer [2022-11-26 00:27:17,453 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:27:17,454 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:27:17,454 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:27:17,455 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:27:17,462 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:27:16" (3/4) ... [2022-11-26 00:27:17,468 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:27:17,468 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:27:17,471 INFO L158 Benchmark]: Toolchain (without parser) took 9798.94ms. Allocated memory was 151.0MB in the beginning and 438.3MB in the end (delta: 287.3MB). Free memory was 107.2MB in the beginning and 375.8MB in the end (delta: -268.6MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2022-11-26 00:27:17,472 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 151.0MB. Free memory is still 92.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:27:17,473 INFO L158 Benchmark]: CACSL2BoogieTranslator took 939.04ms. Allocated memory is still 151.0MB. Free memory was 107.0MB in the beginning and 66.4MB in the end (delta: 40.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-11-26 00:27:17,475 INFO L158 Benchmark]: Boogie Procedure Inliner took 210.61ms. Allocated memory was 151.0MB in the beginning and 184.5MB in the end (delta: 33.6MB). Free memory was 66.4MB in the beginning and 146.0MB in the end (delta: -79.6MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2022-11-26 00:27:17,478 INFO L158 Benchmark]: Boogie Preprocessor took 164.91ms. Allocated memory is still 184.5MB. Free memory was 146.0MB in the beginning and 140.4MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-26 00:27:17,479 INFO L158 Benchmark]: RCFGBuilder took 7226.26ms. Allocated memory was 184.5MB in the beginning and 364.9MB in the end (delta: 180.4MB). Free memory was 140.4MB in the beginning and 161.3MB in the end (delta: -20.8MB). Peak memory consumption was 219.2MB. Max. memory is 16.1GB. [2022-11-26 00:27:17,480 INFO L158 Benchmark]: TraceAbstraction took 1232.02ms. Allocated memory was 364.9MB in the beginning and 438.3MB in the end (delta: 73.4MB). Free memory was 160.2MB in the beginning and 375.8MB in the end (delta: -215.6MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. [2022-11-26 00:27:17,480 INFO L158 Benchmark]: Witness Printer took 15.30ms. Allocated memory is still 438.3MB. Free memory is still 375.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:27:17,484 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 151.0MB. Free memory is still 92.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 939.04ms. Allocated memory is still 151.0MB. Free memory was 107.0MB in the beginning and 66.4MB in the end (delta: 40.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 210.61ms. Allocated memory was 151.0MB in the beginning and 184.5MB in the end (delta: 33.6MB). Free memory was 66.4MB in the beginning and 146.0MB in the end (delta: -79.6MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 164.91ms. Allocated memory is still 184.5MB. Free memory was 146.0MB in the beginning and 140.4MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 7226.26ms. Allocated memory was 184.5MB in the beginning and 364.9MB in the end (delta: 180.4MB). Free memory was 140.4MB in the beginning and 161.3MB in the end (delta: -20.8MB). Peak memory consumption was 219.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1232.02ms. Allocated memory was 364.9MB in the beginning and 438.3MB in the end (delta: 73.4MB). Free memory was 160.2MB in the beginning and 375.8MB in the end (delta: -215.6MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. * Witness Printer took 15.30ms. Allocated memory is still 438.3MB. Free memory is still 375.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 371, overapproximation of bitwiseOr at line 342, overapproximation of bitwiseAnd at line 329. 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_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 4); [L29] const SORT_7 msb_SORT_7 = (SORT_7)1 << (4 - 1); [L31] const SORT_11 mask_SORT_11 = (SORT_11)-1 >> (sizeof(SORT_11) * 8 - 32); [L32] const SORT_11 msb_SORT_11 = (SORT_11)1 << (32 - 1); [L34] const SORT_37 mask_SORT_37 = (SORT_37)-1 >> (sizeof(SORT_37) * 8 - 3); [L35] const SORT_37 msb_SORT_37 = (SORT_37)1 << (3 - 1); [L37] const SORT_67 mask_SORT_67 = (SORT_67)-1 >> (sizeof(SORT_67) * 8 - 2); [L38] const SORT_67 msb_SORT_67 = (SORT_67)1 << (2 - 1); [L40] const SORT_7 var_8 = 0; [L41] const SORT_11 var_13 = 0; [L42] const SORT_11 var_16 = 8; [L43] const SORT_11 var_20 = 4; [L44] const SORT_11 var_24 = 2; [L45] const SORT_11 var_28 = 1; [L46] const SORT_1 var_33 = 1; [L47] const SORT_37 var_38 = 0; [L48] const SORT_1 var_47 = 0; [L49] const SORT_67 var_68 = 0; [L50] const SORT_67 var_71 = 1; [L51] const SORT_37 var_81 = 7; [L52] const SORT_37 var_104 = 1; [L53] const SORT_37 var_123 = 2; [L54] const SORT_37 var_138 = 4; [L55] const SORT_67 var_154 = 2; [L56] const SORT_7 var_394 = 8; [L57] const SORT_7 var_397 = 4; [L58] const SORT_7 var_400 = 2; [L59] const SORT_7 var_401 = 1; [L61] SORT_1 input_2; [L62] SORT_1 input_3; [L63] SORT_1 input_4; [L64] SORT_1 input_5; [L65] SORT_1 input_6; [L66] SORT_37 input_75; [L67] SORT_37 input_76; [L68] SORT_37 input_77; [L69] SORT_37 input_78; [L70] SORT_37 input_79; [L71] SORT_37 input_80; [L72] SORT_37 input_85; [L73] SORT_37 input_87; [L74] SORT_37 input_89; [L75] SORT_37 input_94; [L76] SORT_37 input_96; [L77] SORT_37 input_98; [L78] SORT_37 input_102; [L79] SORT_37 input_103; [L80] SORT_37 input_108; [L81] SORT_37 input_110; [L82] SORT_37 input_115; [L83] SORT_37 input_117; [L84] SORT_37 input_121; [L85] SORT_37 input_122; [L86] SORT_37 input_127; [L87] SORT_37 input_132; [L88] SORT_37 input_136; [L89] SORT_37 input_137; [L90] SORT_37 input_149; [L91] SORT_37 input_160; [L92] SORT_37 input_161; [L93] SORT_37 input_162; [L94] SORT_37 input_163; [L95] SORT_37 input_164; [L96] SORT_37 input_165; [L97] SORT_37 input_168; [L98] SORT_37 input_170; [L99] SORT_37 input_172; [L100] SORT_37 input_177; [L101] SORT_37 input_179; [L102] SORT_37 input_181; [L103] SORT_37 input_185; [L104] SORT_37 input_186; [L105] SORT_37 input_189; [L106] SORT_37 input_191; [L107] SORT_37 input_196; [L108] SORT_37 input_198; [L109] SORT_37 input_202; [L110] SORT_37 input_203; [L111] SORT_37 input_206; [L112] SORT_37 input_211; [L113] SORT_37 input_215; [L114] SORT_37 input_216; [L115] SORT_37 input_226; [L116] SORT_37 input_233; [L117] SORT_37 input_234; [L118] SORT_37 input_235; [L119] SORT_37 input_236; [L120] SORT_37 input_237; [L121] SORT_37 input_238; [L122] SORT_37 input_241; [L123] SORT_37 input_243; [L124] SORT_37 input_245; [L125] SORT_37 input_250; [L126] SORT_37 input_252; [L127] SORT_37 input_254; [L128] SORT_37 input_258; [L129] SORT_37 input_259; [L130] SORT_37 input_262; [L131] SORT_37 input_264; [L132] SORT_37 input_269; [L133] SORT_37 input_271; [L134] SORT_37 input_275; [L135] SORT_37 input_276; [L136] SORT_37 input_279; [L137] SORT_37 input_284; [L138] SORT_37 input_288; [L139] SORT_37 input_289; [L140] SORT_37 input_299; [L141] SORT_37 input_306; [L142] SORT_37 input_307; [L143] SORT_37 input_308; [L144] SORT_37 input_309; [L145] SORT_37 input_310; [L146] SORT_37 input_311; [L147] SORT_37 input_314; [L148] SORT_37 input_316; [L149] SORT_37 input_318; [L150] SORT_37 input_323; [L151] SORT_37 input_325; [L152] SORT_37 input_327; [L153] SORT_37 input_331; [L154] SORT_37 input_332; [L155] SORT_37 input_335; [L156] SORT_37 input_337; [L157] SORT_37 input_342; [L158] SORT_37 input_344; [L159] SORT_37 input_348; [L160] SORT_37 input_349; [L161] SORT_37 input_352; [L162] SORT_37 input_357; [L163] SORT_37 input_361; [L164] SORT_37 input_362; [L165] SORT_37 input_372; [L166] SORT_7 input_391; [L167] SORT_7 input_392; [L168] SORT_7 input_393; [L170] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L171] SORT_37 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_37; [L172] SORT_37 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_37; [L173] SORT_37 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_37; [L174] SORT_37 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_37; [L175] SORT_1 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L176] SORT_1 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L177] SORT_1 state_52 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L178] SORT_1 state_54 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L179] SORT_7 state_56 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L180] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L181] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L182] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L183] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L184] SORT_67 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_67; [L186] SORT_7 init_10_arg_1 = var_8; [L187] state_9 = init_10_arg_1 [L188] SORT_37 init_40_arg_1 = var_38; [L189] state_39 = init_40_arg_1 [L190] SORT_37 init_42_arg_1 = var_38; [L191] state_41 = init_42_arg_1 [L192] SORT_37 init_44_arg_1 = var_38; [L193] state_43 = init_44_arg_1 [L194] SORT_37 init_46_arg_1 = var_38; [L195] state_45 = init_46_arg_1 [L196] SORT_1 init_49_arg_1 = var_47; [L197] state_48 = init_49_arg_1 [L198] SORT_1 init_51_arg_1 = var_47; [L199] state_50 = init_51_arg_1 [L200] SORT_1 init_53_arg_1 = var_47; [L201] state_52 = init_53_arg_1 [L202] SORT_1 init_55_arg_1 = var_47; [L203] state_54 = init_55_arg_1 [L204] SORT_7 init_57_arg_1 = var_8; [L205] state_56 = init_57_arg_1 [L206] SORT_1 init_60_arg_1 = var_47; [L207] state_59 = init_60_arg_1 [L208] SORT_1 init_62_arg_1 = var_47; [L209] state_61 = init_62_arg_1 [L210] SORT_1 init_64_arg_1 = var_47; [L211] state_63 = init_64_arg_1 [L212] SORT_1 init_66_arg_1 = var_47; [L213] state_65 = init_66_arg_1 [L214] SORT_67 init_70_arg_1 = var_68; [L215] state_69 = init_70_arg_1 VAL [init_10_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_49_arg_1=0, init_51_arg_1=0, init_53_arg_1=0, init_55_arg_1=0, init_57_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_70_arg_1=0, mask_SORT_1=1, mask_SORT_11=4294967295, mask_SORT_37=7, mask_SORT_67=3, mask_SORT_7=15, msb_SORT_1=1, msb_SORT_11=2147483648, msb_SORT_37=4, msb_SORT_67=2, msb_SORT_7=8, state_39=0, state_41=0, state_43=0, state_45=0, state_48=0, state_50=0, state_52=0, state_54=0, state_56=0, state_59=0, state_61=0, state_63=0, state_65=0, state_69=0, state_9=0, var_104=1, var_123=2, var_13=0, var_138=4, var_154=2, var_16=8, var_20=4, var_24=2, var_28=1, var_33=1, var_38=0, var_394=8, var_397=4, var_400=2, var_401=1, var_47=0, var_68=0, var_71=1, var_8=0, var_81=7] [L218] input_2 = __VERIFIER_nondet_uchar() [L219] input_3 = __VERIFIER_nondet_uchar() [L220] input_4 = __VERIFIER_nondet_uchar() [L221] input_5 = __VERIFIER_nondet_uchar() [L222] input_6 = __VERIFIER_nondet_uchar() [L223] input_75 = __VERIFIER_nondet_uchar() [L224] input_76 = __VERIFIER_nondet_uchar() [L225] input_77 = __VERIFIER_nondet_uchar() [L226] input_78 = __VERIFIER_nondet_uchar() [L227] input_79 = __VERIFIER_nondet_uchar() [L228] input_80 = __VERIFIER_nondet_uchar() [L229] input_85 = __VERIFIER_nondet_uchar() [L230] input_87 = __VERIFIER_nondet_uchar() [L231] input_89 = __VERIFIER_nondet_uchar() [L232] input_94 = __VERIFIER_nondet_uchar() [L233] input_96 = __VERIFIER_nondet_uchar() [L234] input_98 = __VERIFIER_nondet_uchar() [L235] input_102 = __VERIFIER_nondet_uchar() [L236] input_103 = __VERIFIER_nondet_uchar() [L237] input_108 = __VERIFIER_nondet_uchar() [L238] input_110 = __VERIFIER_nondet_uchar() [L239] input_115 = __VERIFIER_nondet_uchar() [L240] input_117 = __VERIFIER_nondet_uchar() [L241] input_121 = __VERIFIER_nondet_uchar() [L242] input_122 = __VERIFIER_nondet_uchar() [L243] input_127 = __VERIFIER_nondet_uchar() [L244] input_132 = __VERIFIER_nondet_uchar() [L245] input_136 = __VERIFIER_nondet_uchar() [L246] input_137 = __VERIFIER_nondet_uchar() [L247] input_149 = __VERIFIER_nondet_uchar() [L248] input_160 = __VERIFIER_nondet_uchar() [L249] input_161 = __VERIFIER_nondet_uchar() [L250] input_162 = __VERIFIER_nondet_uchar() [L251] input_163 = __VERIFIER_nondet_uchar() [L252] input_164 = __VERIFIER_nondet_uchar() [L253] input_165 = __VERIFIER_nondet_uchar() [L254] input_168 = __VERIFIER_nondet_uchar() [L255] input_170 = __VERIFIER_nondet_uchar() [L256] input_172 = __VERIFIER_nondet_uchar() [L257] input_177 = __VERIFIER_nondet_uchar() [L258] input_179 = __VERIFIER_nondet_uchar() [L259] input_181 = __VERIFIER_nondet_uchar() [L260] input_185 = __VERIFIER_nondet_uchar() [L261] input_186 = __VERIFIER_nondet_uchar() [L262] input_189 = __VERIFIER_nondet_uchar() [L263] input_191 = __VERIFIER_nondet_uchar() [L264] input_196 = __VERIFIER_nondet_uchar() [L265] input_198 = __VERIFIER_nondet_uchar() [L266] input_202 = __VERIFIER_nondet_uchar() [L267] input_203 = __VERIFIER_nondet_uchar() [L268] input_206 = __VERIFIER_nondet_uchar() [L269] input_211 = __VERIFIER_nondet_uchar() [L270] input_215 = __VERIFIER_nondet_uchar() [L271] input_216 = __VERIFIER_nondet_uchar() [L272] input_226 = __VERIFIER_nondet_uchar() [L273] input_233 = __VERIFIER_nondet_uchar() [L274] input_234 = __VERIFIER_nondet_uchar() [L275] input_235 = __VERIFIER_nondet_uchar() [L276] input_236 = __VERIFIER_nondet_uchar() [L277] input_237 = __VERIFIER_nondet_uchar() [L278] input_238 = __VERIFIER_nondet_uchar() [L279] input_241 = __VERIFIER_nondet_uchar() [L280] input_243 = __VERIFIER_nondet_uchar() [L281] input_245 = __VERIFIER_nondet_uchar() [L282] input_250 = __VERIFIER_nondet_uchar() [L283] input_252 = __VERIFIER_nondet_uchar() [L284] input_254 = __VERIFIER_nondet_uchar() [L285] input_258 = __VERIFIER_nondet_uchar() [L286] input_259 = __VERIFIER_nondet_uchar() [L287] input_262 = __VERIFIER_nondet_uchar() [L288] input_264 = __VERIFIER_nondet_uchar() [L289] input_269 = __VERIFIER_nondet_uchar() [L290] input_271 = __VERIFIER_nondet_uchar() [L291] input_275 = __VERIFIER_nondet_uchar() [L292] input_276 = __VERIFIER_nondet_uchar() [L293] input_279 = __VERIFIER_nondet_uchar() [L294] input_284 = __VERIFIER_nondet_uchar() [L295] input_288 = __VERIFIER_nondet_uchar() [L296] input_289 = __VERIFIER_nondet_uchar() [L297] input_299 = __VERIFIER_nondet_uchar() [L298] input_306 = __VERIFIER_nondet_uchar() [L299] input_307 = __VERIFIER_nondet_uchar() [L300] input_308 = __VERIFIER_nondet_uchar() [L301] input_309 = __VERIFIER_nondet_uchar() [L302] input_310 = __VERIFIER_nondet_uchar() [L303] input_311 = __VERIFIER_nondet_uchar() [L304] input_314 = __VERIFIER_nondet_uchar() [L305] input_316 = __VERIFIER_nondet_uchar() [L306] input_318 = __VERIFIER_nondet_uchar() [L307] input_323 = __VERIFIER_nondet_uchar() [L308] input_325 = __VERIFIER_nondet_uchar() [L309] input_327 = __VERIFIER_nondet_uchar() [L310] input_331 = __VERIFIER_nondet_uchar() [L311] input_332 = __VERIFIER_nondet_uchar() [L312] input_335 = __VERIFIER_nondet_uchar() [L313] input_337 = __VERIFIER_nondet_uchar() [L314] input_342 = __VERIFIER_nondet_uchar() [L315] input_344 = __VERIFIER_nondet_uchar() [L316] input_348 = __VERIFIER_nondet_uchar() [L317] input_349 = __VERIFIER_nondet_uchar() [L318] input_352 = __VERIFIER_nondet_uchar() [L319] input_357 = __VERIFIER_nondet_uchar() [L320] input_361 = __VERIFIER_nondet_uchar() [L321] input_362 = __VERIFIER_nondet_uchar() [L322] input_372 = __VERIFIER_nondet_uchar() [L323] input_391 = __VERIFIER_nondet_uchar() [L324] input_392 = __VERIFIER_nondet_uchar() [L325] input_393 = __VERIFIER_nondet_uchar() [L328] SORT_7 var_12_arg_0 = state_9; [L329] var_12_arg_0 = var_12_arg_0 & mask_SORT_7 [L330] SORT_11 var_12 = var_12_arg_0; [L331] SORT_11 var_14_arg_0 = var_12; [L332] SORT_11 var_14_arg_1 = var_13; [L333] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L334] SORT_7 var_15_arg_0 = state_9; [L335] var_15_arg_0 = var_15_arg_0 & mask_SORT_7 [L336] SORT_11 var_15 = var_15_arg_0; [L337] SORT_11 var_17_arg_0 = var_15; [L338] SORT_11 var_17_arg_1 = var_16; [L339] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L340] SORT_1 var_18_arg_0 = var_14; [L341] SORT_1 var_18_arg_1 = var_17; [L342] SORT_1 var_18 = var_18_arg_0 | var_18_arg_1; [L343] SORT_7 var_19_arg_0 = state_9; [L344] var_19_arg_0 = var_19_arg_0 & mask_SORT_7 [L345] SORT_11 var_19 = var_19_arg_0; [L346] SORT_11 var_21_arg_0 = var_19; [L347] SORT_11 var_21_arg_1 = var_20; [L348] SORT_1 var_21 = var_21_arg_0 == var_21_arg_1; [L349] SORT_1 var_22_arg_0 = var_18; [L350] SORT_1 var_22_arg_1 = var_21; [L351] SORT_1 var_22 = var_22_arg_0 | var_22_arg_1; [L352] SORT_7 var_23_arg_0 = state_9; [L353] var_23_arg_0 = var_23_arg_0 & mask_SORT_7 [L354] SORT_11 var_23 = var_23_arg_0; [L355] SORT_11 var_25_arg_0 = var_23; [L356] SORT_11 var_25_arg_1 = var_24; [L357] SORT_1 var_25 = var_25_arg_0 == var_25_arg_1; [L358] SORT_1 var_26_arg_0 = var_22; [L359] SORT_1 var_26_arg_1 = var_25; [L360] SORT_1 var_26 = var_26_arg_0 | var_26_arg_1; [L361] SORT_7 var_27_arg_0 = state_9; [L362] var_27_arg_0 = var_27_arg_0 & mask_SORT_7 [L363] SORT_11 var_27 = var_27_arg_0; [L364] SORT_11 var_29_arg_0 = var_27; [L365] SORT_11 var_29_arg_1 = var_28; [L366] SORT_1 var_29 = var_29_arg_0 == var_29_arg_1; [L367] SORT_1 var_30_arg_0 = var_26; [L368] SORT_1 var_30_arg_1 = var_29; [L369] SORT_1 var_30 = var_30_arg_0 | var_30_arg_1; [L370] SORT_1 var_34_arg_0 = var_30; [L371] SORT_1 var_34 = ~var_34_arg_0; [L372] SORT_1 var_35_arg_0 = var_33; [L373] SORT_1 var_35_arg_1 = var_34; [L374] SORT_1 var_35 = var_35_arg_0 & var_35_arg_1; [L375] var_35 = var_35 & mask_SORT_1 [L376] SORT_1 bad_36_arg_0 = var_35; [L377] CALL __VERIFIER_assert(!(bad_36_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: 1.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-26 00:27:17,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash de3432be659aeb068d9578abe855cccd372c2dcc53965b366fbb1d4a71898931 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:27:20,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:27:20,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:27:20,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:27:20,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:27:20,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:27:20,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:27:20,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:27:20,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:27:20,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:27:20,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:27:20,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:27:20,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:27:20,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:27:20,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:27:20,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:27:20,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:27:20,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:27:20,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:27:20,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:27:20,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:27:20,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:27:20,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:27:20,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:27:20,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:27:20,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:27:20,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:27:20,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:27:20,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:27:20,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:27:20,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:27:20,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:27:20,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:27:20,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:27:20,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:27:20,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:27:20,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:27:20,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:27:20,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:27:20,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:27:20,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:27:20,593 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-26 00:27:20,638 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:27:20,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:27:20,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:27:20,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:27:20,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:27:20,642 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:27:20,642 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:27:20,642 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:27:20,643 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:27:20,643 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:27:20,644 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:27:20,645 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:27:20,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:27:20,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:27:20,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:27:20,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:27:20,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:27:20,647 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:27:20,647 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:27:20,648 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:27:20,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:27:20,648 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:27:20,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:27:20,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:27:20,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:27:20,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:27:20,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:27:20,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:27:20,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:27:20,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:27:20,651 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:27:20,651 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:27:20,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:27:20,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:27:20,653 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:27:20,653 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_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de3432be659aeb068d9578abe855cccd372c2dcc53965b366fbb1d4a71898931 [2022-11-26 00:27:21,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:27:21,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:27:21,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:27:21,161 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:27:21,164 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:27:21,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c [2022-11-26 00:27:24,911 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:27:25,391 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:27:25,392 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c [2022-11-26 00:27:25,406 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/data/fb4f287c6/07365261f7a34f299fcf608dfde10a7a/FLAGfccb882ae [2022-11-26 00:27:25,444 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/data/fb4f287c6/07365261f7a34f299fcf608dfde10a7a [2022-11-26 00:27:25,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:27:25,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:27:25,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:27:25,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:27:25,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:27:25,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:27:25" (1/1) ... [2022-11-26 00:27:25,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66dc2221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:25, skipping insertion in model container [2022-11-26 00:27:25,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:27:25" (1/1) ... [2022-11-26 00:27:25,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:27:25,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:27:25,836 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c[1107,1120] [2022-11-26 00:27:26,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:27:26,263 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:27:26,277 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b03.c[1107,1120] [2022-11-26 00:27:26,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:27:26,423 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:27:26,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:26 WrapperNode [2022-11-26 00:27:26,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:27:26,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:27:26,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:27:26,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:27:26,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:26" (1/1) ... [2022-11-26 00:27:26,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:26" (1/1) ... [2022-11-26 00:27:26,597 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1420 [2022-11-26 00:27:26,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:27:26,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:27:26,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:27:26,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:27:26,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:26" (1/1) ... [2022-11-26 00:27:26,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:26" (1/1) ... [2022-11-26 00:27:26,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:26" (1/1) ... [2022-11-26 00:27:26,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:26" (1/1) ... [2022-11-26 00:27:26,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:26" (1/1) ... [2022-11-26 00:27:26,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:26" (1/1) ... [2022-11-26 00:27:26,671 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:26" (1/1) ... [2022-11-26 00:27:26,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:26" (1/1) ... [2022-11-26 00:27:26,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:27:26,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:27:26,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:27:26,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:27:26,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:26" (1/1) ... [2022-11-26 00:27:26,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:27:26,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:27:26,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:27:26,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:27:26,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:27:26,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:27:27,316 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:27:27,319 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:27:29,324 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:27:29,333 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:27:29,334 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:27:29,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:27:29 BoogieIcfgContainer [2022-11-26 00:27:29,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:27:29,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:27:29,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:27:29,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:27:29,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:27:25" (1/3) ... [2022-11-26 00:27:29,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf15df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:27:29, skipping insertion in model container [2022-11-26 00:27:29,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:27:26" (2/3) ... [2022-11-26 00:27:29,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf15df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:27:29, skipping insertion in model container [2022-11-26 00:27:29,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:27:29" (3/3) ... [2022-11-26 00:27:29,351 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b03.c [2022-11-26 00:27:29,375 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:27:29,376 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:27:29,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:27:29,481 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;@3afe4f6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:27:29,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:27:29,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:27:29,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:27:29,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:27:29,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:27:29,496 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:27:29,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:27:29,506 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-26 00:27:29,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:27:29,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870048013] [2022-11-26 00:27:29,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:27:29,529 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:27:29,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:27:29,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:27:29,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-26 00:27:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:27:30,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-26 00:27:30,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:27:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:27:30,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:27:30,379 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:27:30,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870048013] [2022-11-26 00:27:30,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870048013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:27:30,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:27:30,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:27:30,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725883541] [2022-11-26 00:27:30,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:27:30,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:27:30,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:27:30,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:27:30,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:27:30,449 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:27:30,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:27:30,801 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-26 00:27:30,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:27:30,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 00:27:30,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:27:30,815 INFO L225 Difference]: With dead ends: 20 [2022-11-26 00:27:30,815 INFO L226 Difference]: Without dead ends: 11 [2022-11-26 00:27:30,818 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 [2022-11-26 00:27:30,823 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:27:30,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:27:30,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-26 00:27:30,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-26 00:27:30,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:27:30,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-26 00:27:30,864 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-26 00:27:30,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:27:30,865 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-26 00:27:30,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:27:30,866 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-26 00:27:30,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:27:30,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:27:30,867 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-26 00:27:30,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:27:31,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:27:31,082 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:27:31,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:27:31,083 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-26 00:27:31,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:27:31,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187076003] [2022-11-26 00:27:31,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:27:31,092 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:27:31,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:27:31,095 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:27:31,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-26 00:27:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:27:32,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-26 00:27:32,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:27:32,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:27:32,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:27:33,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:27:33,879 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:27:33,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187076003] [2022-11-26 00:27:33,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187076003] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:27:33,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1597042072] [2022-11-26 00:27:33,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:27:33,887 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:27:33,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:27:33,894 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:27:33,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-26 00:27:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:27:35,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-26 00:27:35,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:27:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:27:35,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:27:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:27:41,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1597042072] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:27:41,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87961422] [2022-11-26 00:27:41,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:27:41,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:27:41,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:27:41,748 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:27:41,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:27:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:27:42,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-26 00:27:42,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:27:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:27:42,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:27:43,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:27:43,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87961422] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:27:43,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:27:43,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 12 [2022-11-26 00:27:43,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587498776] [2022-11-26 00:27:43,762 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:27:43,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 00:27:43,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:27:43,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 00:27:43,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=86, Unknown=1, NotChecked=0, Total=132 [2022-11-26 00:27:43,767 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:27:44,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:27:44,225 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-26 00:27:44,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:27:44,226 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-26 00:27:44,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:27:44,227 INFO L225 Difference]: With dead ends: 16 [2022-11-26 00:27:44,227 INFO L226 Difference]: Without dead ends: 14 [2022-11-26 00:27:44,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=64, Invalid=117, Unknown=1, NotChecked=0, Total=182 [2022-11-26 00:27:44,229 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:27:44,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 21 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:27:44,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-26 00:27:44,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-26 00:27:44,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:27:44,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-26 00:27:44,234 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-26 00:27:44,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:27:44,235 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-26 00:27:44,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:27:44,235 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-26 00:27:44,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:27:44,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:27:44,237 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-26 00:27:44,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:27:44,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:27:44,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:27:44,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:27:44,849 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:27:44,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:27:44,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-26 00:27:44,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:27:44,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289416216] [2022-11-26 00:27:44,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:27:44,854 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:27:44,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:27:44,855 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:27:44,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-26 00:27:46,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:27:46,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:27:46,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 2386 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-26 00:27:46,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:27:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:27:46,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:05,003 WARN L233 SmtUtils]: Spent 9.88s on a formula simplification. DAG size of input: 181 DAG size of output: 151 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:28:05,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:05,288 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:05,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289416216] [2022-11-26 00:28:05,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289416216] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:05,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [491739906] [2022-11-26 00:28:05,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:28:05,289 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:28:05,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:28:05,293 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:28:05,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-26 00:28:07,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:28:07,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:07,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 2386 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-26 00:28:07,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:08,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:10,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [491739906] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:10,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981760658] [2022-11-26 00:28:10,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:28:10,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:28:10,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:28:10,935 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:28:10,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 00:28:11,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-26 00:28:11,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:11,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 2386 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-26 00:28:11,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:12,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:14,560 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:14,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981760658] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:14,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:28:14,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 11 [2022-11-26 00:28:14,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876597579] [2022-11-26 00:28:14,563 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:28:14,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:28:14,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:28:14,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:28:14,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=84, Unknown=1, NotChecked=0, Total=110 [2022-11-26 00:28:14,571 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:15,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:28:15,169 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-26 00:28:15,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:28:15,170 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-26 00:28:15,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:28:15,171 INFO L225 Difference]: With dead ends: 19 [2022-11-26 00:28:15,171 INFO L226 Difference]: Without dead ends: 17 [2022-11-26 00:28:15,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=58, Invalid=151, Unknown=1, NotChecked=0, Total=210 [2022-11-26 00:28:15,173 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:28:15,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 27 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:28:15,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-26 00:28:15,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-26 00:28:15,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:15,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-26 00:28:15,181 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-26 00:28:15,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:28:15,181 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-26 00:28:15,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:28:15,182 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-26 00:28:15,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-26 00:28:15,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:28:15,183 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-26 00:28:15,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-26 00:28:15,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-11-26 00:28:15,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-26 00:28:15,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:28:15,792 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:28:15,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:28:15,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-26 00:28:15,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:28:15,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708781440] [2022-11-26 00:28:15,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:28:15,798 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:28:15,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:28:15,800 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:28:15,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-26 00:28:17,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-26 00:28:17,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:17,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 3470 conjuncts, 125 conjunts are in the unsatisfiable core [2022-11-26 00:28:17,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:18,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:28:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:28,762 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:28:28,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708781440] [2022-11-26 00:28:28,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708781440] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:28:28,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1530100978] [2022-11-26 00:28:28,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:28:28,763 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:28:28,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:28:28,765 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:28:28,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-26 00:28:32,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-26 00:28:32,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:28:32,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 3470 conjuncts, 177 conjunts are in the unsatisfiable core [2022-11-26 00:28:32,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:28:34,592 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:28:34,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:29:02,940 WARN L233 SmtUtils]: Spent 7.34s on a formula simplification. DAG size of input: 297 DAG size of output: 253 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:29:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:08,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1530100978] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:29:08,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351199211] [2022-11-26 00:29:08,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:29:08,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:29:08,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:29:08,319 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:29:08,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-26 00:29:09,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-26 00:29:09,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:29:09,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 3470 conjuncts, 220 conjunts are in the unsatisfiable core [2022-11-26 00:29:09,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:29:11,494 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:11,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:29:38,626 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:38,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351199211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:29:38,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:29:38,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 10, 9, 9, 9] total 32 [2022-11-26 00:29:38,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026184578] [2022-11-26 00:29:38,627 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:29:38,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-26 00:29:38,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:29:38,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-26 00:29:38,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=805, Unknown=0, NotChecked=0, Total=992 [2022-11-26 00:29:38,630 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 32 states, 32 states have (on average 2.03125) internal successors, (65), 32 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:40,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:29:40,255 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-26 00:29:40,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:29:40,256 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.03125) internal successors, (65), 32 states have internal predecessors, (65), 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 [2022-11-26 00:29:40,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:29:40,257 INFO L225 Difference]: With dead ends: 22 [2022-11-26 00:29:40,257 INFO L226 Difference]: Without dead ends: 20 [2022-11-26 00:29:40,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=295, Invalid=1037, Unknown=0, NotChecked=0, Total=1332 [2022-11-26 00:29:40,259 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:29:40,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 34 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:29:40,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-26 00:29:40,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-26 00:29:40,269 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) [2022-11-26 00:29:40,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-26 00:29:40,270 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-11-26 00:29:40,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:29:40,271 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-26 00:29:40,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.03125) internal successors, (65), 32 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:29:40,272 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-26 00:29:40,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-26 00:29:40,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:29:40,273 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-26 00:29:40,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-26 00:29:40,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-26 00:29:40,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-26 00:29:40,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:29:40,875 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:29:40,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:29:40,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 4 times [2022-11-26 00:29:40,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:29:40,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124477397] [2022-11-26 00:29:40,878 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:29:40,879 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:29:40,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:29:40,880 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:29:40,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-26 00:29:42,653 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:29:42,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:29:42,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 4554 conjuncts, 196 conjunts are in the unsatisfiable core [2022-11-26 00:29:42,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:29:46,007 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:29:46,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:30:42,573 WARN L233 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 382 DAG size of output: 302 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:31:03,042 WARN L233 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 412 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:31:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:31:04,875 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:31:04,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124477397] [2022-11-26 00:31:04,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124477397] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:31:04,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1361129672] [2022-11-26 00:31:04,876 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:31:04,876 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:31:04,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:31:04,878 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:31:04,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_760c1171-ecde-42cb-91d6-2d3f08d4c916/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-26 00:31:09,067 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:31:09,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:31:09,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 4554 conjuncts, 458 conjunts are in the unsatisfiable core [2022-11-26 00:31:09,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:31:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:31:29,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:32:13,805 WARN L233 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 476 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)