./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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 71c685f028ed91d7b5a9714e56e64b437d5e492a38be11760a5871f4cde664d2 --- 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 [2022-11-25 23:18:43,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:18:43,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:18:43,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:18:43,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:18:43,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:18:43,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:18:43,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:18:43,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:18:43,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:18:43,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:18:43,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:18:43,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:18:43,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:18:43,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:18:43,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:18:43,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:18:43,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:18:43,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:18:43,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:18:43,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:18:43,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:18:43,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:18:43,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:18:43,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:18:43,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:18:43,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:18:43,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:18:43,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:18:43,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:18:43,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:18:43,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:18:43,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:18:43,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:18:43,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:18:43,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:18:43,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:18:43,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:18:43,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:18:43,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:18:43,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:18:43,604 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 23:18:43,631 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:18:43,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:18:43,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:18:43,633 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:18:43,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:18:43,634 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:18:43,634 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:18:43,634 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:18:43,635 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:18:43,635 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:18:43,635 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:18:43,635 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:18:43,636 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:18:43,636 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:18:43,636 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:18:43,637 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:18:43,637 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:18:43,637 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:18:43,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:18:43,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:18:43,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:18:43,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:18:43,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:18:43,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:18:43,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:18:43,640 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:18:43,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:18:43,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:18:43,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:18:43,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:18:43,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:18:43,643 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:18:43,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:18:43,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:18:43,644 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:18:43,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:18:43,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:18:43,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:18:43,645 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_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71c685f028ed91d7b5a9714e56e64b437d5e492a38be11760a5871f4cde664d2 [2022-11-25 23:18:43,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:18:43,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:18:43,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:18:43,927 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:18:43,927 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:18:43,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c [2022-11-25 23:18:47,040 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:18:47,353 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:18:47,353 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c [2022-11-25 23:18:47,365 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/data/044d57aa6/afbcab6ed060422b929e6d272fed51d1/FLAGc0df686a1 [2022-11-25 23:18:47,380 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/data/044d57aa6/afbcab6ed060422b929e6d272fed51d1 [2022-11-25 23:18:47,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:18:47,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:18:47,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:18:47,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:18:47,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:18:47,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:18:47" (1/1) ... [2022-11-25 23:18:47,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25dc1cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:47, skipping insertion in model container [2022-11-25 23:18:47,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:18:47" (1/1) ... [2022-11-25 23:18:47,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:18:47,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:18:47,641 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_f9115c5d-623e-4827-bdd8-7c8b31fd4118/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c[1107,1120] [2022-11-25 23:18:47,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:18:47,884 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:18:47,895 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_f9115c5d-623e-4827-bdd8-7c8b31fd4118/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c[1107,1120] [2022-11-25 23:18:48,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:18:48,042 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:18:48,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:48 WrapperNode [2022-11-25 23:18:48,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:18:48,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:18:48,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:18:48,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:18:48,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:48" (1/1) ... [2022-11-25 23:18:48,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:48" (1/1) ... [2022-11-25 23:18:48,196 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1064 [2022-11-25 23:18:48,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:18:48,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:18:48,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:18:48,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:18:48,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:48" (1/1) ... [2022-11-25 23:18:48,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:48" (1/1) ... [2022-11-25 23:18:48,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:48" (1/1) ... [2022-11-25 23:18:48,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:48" (1/1) ... [2022-11-25 23:18:48,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:48" (1/1) ... [2022-11-25 23:18:48,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:48" (1/1) ... [2022-11-25 23:18:48,314 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:48" (1/1) ... [2022-11-25 23:18:48,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:48" (1/1) ... [2022-11-25 23:18:48,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:18:48,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:18:48,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:18:48,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:18:48,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:48" (1/1) ... [2022-11-25 23:18:48,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:18:48,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:18:48,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:18:48,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:18:48,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:18:48,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:18:48,830 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:18:48,832 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:18:57,187 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:18:57,217 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:18:57,218 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:18:57,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:18:57 BoogieIcfgContainer [2022-11-25 23:18:57,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:18:57,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:18:57,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:18:57,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:18:57,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:18:47" (1/3) ... [2022-11-25 23:18:57,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d31a0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:18:57, skipping insertion in model container [2022-11-25 23:18:57,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:18:48" (2/3) ... [2022-11-25 23:18:57,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d31a0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:18:57, skipping insertion in model container [2022-11-25 23:18:57,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:18:57" (3/3) ... [2022-11-25 23:18:57,236 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal1.c [2022-11-25 23:18:57,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:18:57,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:18:57,312 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:18:57,321 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;@2512e944, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:18:57,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:18:57,327 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) [2022-11-25 23:18:57,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:18:57,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:18:57,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:18:57,338 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:18:57,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:18:57,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1797488, now seen corresponding path program 1 times [2022-11-25 23:18:57,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:18:57,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546903798] [2022-11-25 23:18:57,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:18:57,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:18:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:18:57,616 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:18:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:18:57,827 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:18:57,829 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:18:57,832 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 23:18:57,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:18:57,840 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 23:18:57,848 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:18:57,891 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-25 23:18:57,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:18:57 BoogieIcfgContainer [2022-11-25 23:18:57,903 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:18:57,904 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:18:57,904 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:18:57,904 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:18:57,905 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:18:57" (3/4) ... [2022-11-25 23:18:57,908 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:18:57,908 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:18:57,910 INFO L158 Benchmark]: Toolchain (without parser) took 10524.84ms. Allocated memory was 142.6MB in the beginning and 474.0MB in the end (delta: 331.4MB). Free memory was 100.7MB in the beginning and 200.5MB in the end (delta: -99.8MB). Peak memory consumption was 231.9MB. Max. memory is 16.1GB. [2022-11-25 23:18:57,910 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 86.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:18:57,911 INFO L158 Benchmark]: CACSL2BoogieTranslator took 657.55ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 67.1MB in the end (delta: 33.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-25 23:18:57,912 INFO L158 Benchmark]: Boogie Procedure Inliner took 152.15ms. Allocated memory is still 142.6MB. Free memory was 67.1MB in the beginning and 58.1MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 23:18:57,912 INFO L158 Benchmark]: Boogie Preprocessor took 135.09ms. Allocated memory is still 142.6MB. Free memory was 58.1MB in the beginning and 53.5MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 23:18:57,913 INFO L158 Benchmark]: RCFGBuilder took 8887.46ms. Allocated memory was 142.6MB in the beginning and 474.0MB in the end (delta: 331.4MB). Free memory was 53.5MB in the beginning and 234.1MB in the end (delta: -180.6MB). Peak memory consumption was 238.2MB. Max. memory is 16.1GB. [2022-11-25 23:18:57,914 INFO L158 Benchmark]: TraceAbstraction took 677.76ms. Allocated memory is still 474.0MB. Free memory was 234.1MB in the beginning and 201.6MB in the end (delta: 32.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-25 23:18:57,915 INFO L158 Benchmark]: Witness Printer took 4.91ms. Allocated memory is still 474.0MB. Free memory was 201.6MB in the beginning and 200.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:18:57,918 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 86.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 657.55ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 67.1MB in the end (delta: 33.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 152.15ms. Allocated memory is still 142.6MB. Free memory was 67.1MB in the beginning and 58.1MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 135.09ms. Allocated memory is still 142.6MB. Free memory was 58.1MB in the beginning and 53.5MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 8887.46ms. Allocated memory was 142.6MB in the beginning and 474.0MB in the end (delta: 331.4MB). Free memory was 53.5MB in the beginning and 234.1MB in the end (delta: -180.6MB). Peak memory consumption was 238.2MB. Max. memory is 16.1GB. * TraceAbstraction took 677.76ms. Allocated memory is still 474.0MB. Free memory was 234.1MB in the beginning and 201.6MB in the end (delta: 32.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 4.91ms. Allocated memory is still 474.0MB. Free memory was 201.6MB in the beginning and 200.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 244, overapproximation of bitwiseOr at line 260, overapproximation of bitwiseAnd at line 189. 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_6 mask_SORT_6 = (SORT_6)-1 >> (sizeof(SORT_6) * 8 - 32); [L29] const SORT_6 msb_SORT_6 = (SORT_6)1 << (32 - 1); [L31] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 4); [L32] const SORT_10 msb_SORT_10 = (SORT_10)1 << (4 - 1); [L34] const SORT_14 mask_SORT_14 = (SORT_14)-1 >> (sizeof(SORT_14) * 8 - 64); [L35] const SORT_14 msb_SORT_14 = (SORT_14)1 << (64 - 1); [L37] const SORT_1 var_56 = 0; [L38] const SORT_6 var_60 = 0; [L39] const SORT_1 var_73 = 1; [L40] const SORT_14 var_77 = 0; [L41] const SORT_10 var_98 = 0; [L43] SORT_1 input_2; [L44] SORT_1 input_3; [L45] SORT_1 input_4; [L46] SORT_1 input_5; [L47] SORT_6 input_7; [L48] SORT_6 input_8; [L49] SORT_1 input_9; [L50] SORT_10 input_11; [L51] SORT_1 input_12; [L52] SORT_1 input_13; [L53] SORT_14 input_15; [L54] SORT_10 input_16; [L55] SORT_1 input_17; [L56] SORT_6 input_18; [L57] SORT_1 input_19; [L58] SORT_10 input_20; [L59] SORT_10 input_21; [L60] SORT_6 input_22; [L61] SORT_6 input_23; [L62] SORT_1 input_24; [L63] SORT_14 input_25; [L64] SORT_10 input_26; [L65] SORT_1 input_27; [L66] SORT_6 input_28; [L67] SORT_6 input_29; [L68] SORT_6 input_30; [L69] SORT_6 input_31; [L70] SORT_10 input_32; [L71] SORT_10 input_33; [L72] SORT_10 input_34; [L73] SORT_10 input_35; [L74] SORT_10 input_36; [L75] SORT_10 input_37; [L76] SORT_10 input_38; [L77] SORT_10 input_39; [L78] SORT_1 input_40; [L79] SORT_1 input_41; [L80] SORT_1 input_42; [L81] SORT_1 input_43; [L82] SORT_1 input_44; [L83] SORT_1 input_45; [L84] SORT_14 input_46; [L85] SORT_14 input_47; [L86] SORT_14 input_48; [L87] SORT_14 input_49; [L88] SORT_6 input_50; [L89] SORT_6 input_51; [L90] SORT_1 input_52; [L91] SORT_1 input_53; [L92] SORT_1 input_54; [L93] SORT_1 input_55; [L95] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_6 state_61 = __VERIFIER_nondet_uint() & mask_SORT_6; [L97] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_6 state_66 = __VERIFIER_nondet_uint() & mask_SORT_6; [L99] SORT_14 state_78 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L100] SORT_14 state_81 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L101] SORT_1 state_84 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L102] SORT_1 state_90 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] SORT_1 state_93 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] SORT_10 state_99 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L105] SORT_10 state_102 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L106] SORT_1 state_116 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L107] SORT_1 state_123 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] SORT_10 state_135 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L109] SORT_10 state_138 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L110] SORT_6 state_148 = __VERIFIER_nondet_uint() & mask_SORT_6; [L111] SORT_6 state_156 = __VERIFIER_nondet_uint() & mask_SORT_6; [L112] SORT_14 state_170 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L113] SORT_14 state_173 = __VERIFIER_nondet_ulong() & mask_SORT_14; [L114] SORT_1 state_176 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L115] SORT_10 state_179 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L116] SORT_1 state_184 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L117] SORT_1 state_191 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L118] SORT_10 state_196 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L119] SORT_1 state_212 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L120] SORT_10 state_217 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L121] SORT_1 state_223 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L122] SORT_10 state_238 = __VERIFIER_nondet_uchar() & mask_SORT_10; [L123] SORT_6 state_249 = __VERIFIER_nondet_uint() & mask_SORT_6; [L124] SORT_6 state_282 = __VERIFIER_nondet_uint() & mask_SORT_6; [L126] SORT_1 init_58_arg_1 = var_56; [L127] state_57 = init_58_arg_1 [L128] SORT_6 init_62_arg_1 = var_60; [L129] state_61 = init_62_arg_1 [L130] SORT_1 init_64_arg_1 = var_56; [L131] state_63 = init_64_arg_1 [L132] SORT_6 init_67_arg_1 = var_60; [L133] state_66 = init_67_arg_1 [L134] SORT_14 init_79_arg_1 = var_77; [L135] state_78 = init_79_arg_1 [L136] SORT_14 init_82_arg_1 = var_77; [L137] state_81 = init_82_arg_1 [L138] SORT_1 init_85_arg_1 = var_56; [L139] state_84 = init_85_arg_1 [L140] SORT_1 init_91_arg_1 = var_56; [L141] state_90 = init_91_arg_1 [L142] SORT_1 init_94_arg_1 = var_56; [L143] state_93 = init_94_arg_1 [L144] SORT_10 init_100_arg_1 = var_98; [L145] state_99 = init_100_arg_1 [L146] SORT_10 init_103_arg_1 = var_98; [L147] state_102 = init_103_arg_1 [L148] SORT_1 init_117_arg_1 = var_56; [L149] state_116 = init_117_arg_1 [L150] SORT_1 init_124_arg_1 = var_56; [L151] state_123 = init_124_arg_1 [L152] SORT_10 init_136_arg_1 = var_98; [L153] state_135 = init_136_arg_1 [L154] SORT_10 init_139_arg_1 = var_98; [L155] state_138 = init_139_arg_1 [L156] SORT_6 init_149_arg_1 = var_60; [L157] state_148 = init_149_arg_1 [L158] SORT_6 init_157_arg_1 = var_60; [L159] state_156 = init_157_arg_1 [L160] SORT_14 init_171_arg_1 = var_77; [L161] state_170 = init_171_arg_1 [L162] SORT_14 init_174_arg_1 = var_77; [L163] state_173 = init_174_arg_1 [L164] SORT_1 init_177_arg_1 = var_56; [L165] state_176 = init_177_arg_1 [L166] SORT_10 init_180_arg_1 = var_98; [L167] state_179 = init_180_arg_1 [L168] SORT_1 init_185_arg_1 = var_56; [L169] state_184 = init_185_arg_1 [L170] SORT_1 init_192_arg_1 = var_56; [L171] state_191 = init_192_arg_1 [L172] SORT_10 init_197_arg_1 = var_98; [L173] state_196 = init_197_arg_1 [L174] SORT_1 init_213_arg_1 = var_56; [L175] state_212 = init_213_arg_1 [L176] SORT_10 init_218_arg_1 = var_98; [L177] state_217 = init_218_arg_1 [L178] SORT_1 init_224_arg_1 = var_56; [L179] state_223 = init_224_arg_1 [L180] SORT_10 init_239_arg_1 = var_98; [L181] state_238 = init_239_arg_1 [L182] SORT_6 init_250_arg_1 = var_60; [L183] state_249 = init_250_arg_1 [L184] SORT_6 init_283_arg_1 = var_60; [L185] state_282 = init_283_arg_1 VAL [init_100_arg_1=0, init_103_arg_1=0, init_117_arg_1=0, init_124_arg_1=0, init_136_arg_1=0, init_139_arg_1=0, init_149_arg_1=0, init_157_arg_1=0, init_171_arg_1=0, init_174_arg_1=0, init_177_arg_1=0, init_180_arg_1=0, init_185_arg_1=0, init_192_arg_1=0, init_197_arg_1=0, init_213_arg_1=0, init_218_arg_1=0, init_224_arg_1=0, init_239_arg_1=0, init_250_arg_1=0, init_283_arg_1=0, init_58_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_67_arg_1=0, init_79_arg_1=0, init_82_arg_1=0, init_85_arg_1=0, init_91_arg_1=0, init_94_arg_1=0, mask_SORT_1=1, mask_SORT_10=15, mask_SORT_14=18446744073709551615, mask_SORT_6=4294967295, msb_SORT_1=1, msb_SORT_10=8, msb_SORT_14=9223372036854775808, msb_SORT_6=2147483648, state_102=0, state_116=0, state_123=0, state_135=0, state_138=0, state_148=0, state_156=0, state_170=0, state_173=0, state_176=0, state_179=0, state_184=0, state_191=0, state_196=0, state_212=0, state_217=0, state_223=0, state_238=0, state_249=0, state_282=0, state_57=0, state_61=0, state_63=0, state_66=0, state_78=0, state_81=0, state_84=0, state_90=0, state_93=0, state_99=0, var_56=0, var_60=0, var_73=1, var_77=0, var_98=0] [L188] input_2 = __VERIFIER_nondet_uchar() [L189] input_2 = input_2 & mask_SORT_1 [L190] input_3 = __VERIFIER_nondet_uchar() [L191] input_4 = __VERIFIER_nondet_uchar() [L192] input_5 = __VERIFIER_nondet_uchar() [L193] input_7 = __VERIFIER_nondet_uint() [L194] input_8 = __VERIFIER_nondet_uint() [L195] input_9 = __VERIFIER_nondet_uchar() [L196] input_9 = input_9 & mask_SORT_1 [L197] input_11 = __VERIFIER_nondet_uchar() [L198] input_12 = __VERIFIER_nondet_uchar() [L199] input_13 = __VERIFIER_nondet_uchar() [L200] input_15 = __VERIFIER_nondet_ulong() [L201] input_16 = __VERIFIER_nondet_uchar() [L202] input_17 = __VERIFIER_nondet_uchar() [L203] input_18 = __VERIFIER_nondet_uint() [L204] input_19 = __VERIFIER_nondet_uchar() [L205] input_20 = __VERIFIER_nondet_uchar() [L206] input_21 = __VERIFIER_nondet_uchar() [L207] input_22 = __VERIFIER_nondet_uint() [L208] input_23 = __VERIFIER_nondet_uint() [L209] input_24 = __VERIFIER_nondet_uchar() [L210] input_25 = __VERIFIER_nondet_ulong() [L211] input_26 = __VERIFIER_nondet_uchar() [L212] input_27 = __VERIFIER_nondet_uchar() [L213] input_28 = __VERIFIER_nondet_uint() [L214] input_29 = __VERIFIER_nondet_uint() [L215] input_30 = __VERIFIER_nondet_uint() [L216] input_31 = __VERIFIER_nondet_uint() [L217] input_32 = __VERIFIER_nondet_uchar() [L218] input_33 = __VERIFIER_nondet_uchar() [L219] input_34 = __VERIFIER_nondet_uchar() [L220] input_35 = __VERIFIER_nondet_uchar() [L221] input_36 = __VERIFIER_nondet_uchar() [L222] input_37 = __VERIFIER_nondet_uchar() [L223] input_38 = __VERIFIER_nondet_uchar() [L224] input_39 = __VERIFIER_nondet_uchar() [L225] input_40 = __VERIFIER_nondet_uchar() [L226] input_41 = __VERIFIER_nondet_uchar() [L227] input_42 = __VERIFIER_nondet_uchar() [L228] input_43 = __VERIFIER_nondet_uchar() [L229] input_44 = __VERIFIER_nondet_uchar() [L230] input_45 = __VERIFIER_nondet_uchar() [L231] input_46 = __VERIFIER_nondet_ulong() [L232] input_47 = __VERIFIER_nondet_ulong() [L233] input_48 = __VERIFIER_nondet_ulong() [L234] input_49 = __VERIFIER_nondet_ulong() [L235] input_50 = __VERIFIER_nondet_uint() [L236] input_51 = __VERIFIER_nondet_uint() [L237] input_52 = __VERIFIER_nondet_uchar() [L238] input_53 = __VERIFIER_nondet_uchar() [L239] input_54 = __VERIFIER_nondet_uchar() [L240] input_55 = __VERIFIER_nondet_uchar() [L243] SORT_1 var_59_arg_0 = state_57; [L244] SORT_1 var_59 = ~var_59_arg_0; [L245] SORT_1 var_65_arg_0 = state_63; [L246] SORT_6 var_65_arg_1 = state_61; [L247] SORT_6 var_65_arg_2 = input_18; [L248] SORT_6 var_65 = var_65_arg_0 ? var_65_arg_1 : var_65_arg_2; [L249] var_65 = var_65 & mask_SORT_6 [L250] SORT_1 var_68_arg_0 = state_63; [L251] SORT_6 var_68_arg_1 = state_66; [L252] SORT_6 var_68_arg_2 = input_18; [L253] SORT_6 var_68 = var_68_arg_0 ? var_68_arg_1 : var_68_arg_2; [L254] var_68 = var_68 & mask_SORT_6 [L255] SORT_6 var_69_arg_0 = var_65; [L256] SORT_6 var_69_arg_1 = var_68; [L257] SORT_1 var_69 = var_69_arg_0 == var_69_arg_1; [L258] SORT_1 var_70_arg_0 = var_59; [L259] SORT_1 var_70_arg_1 = var_69; [L260] SORT_1 var_70 = var_70_arg_0 | var_70_arg_1; [L261] SORT_1 var_74_arg_0 = var_70; [L262] SORT_1 var_74 = ~var_74_arg_0; [L263] SORT_1 var_75_arg_0 = var_73; [L264] SORT_1 var_75_arg_1 = var_74; [L265] SORT_1 var_75 = var_75_arg_0 & var_75_arg_1; [L266] var_75 = var_75 & mask_SORT_1 [L267] SORT_1 bad_76_arg_0 = var_75; [L268] CALL __VERIFIER_assert(!(bad_76_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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, 0.2s 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 [2022-11-25 23:18:57,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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 71c685f028ed91d7b5a9714e56e64b437d5e492a38be11760a5871f4cde664d2 --- 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 [2022-11-25 23:19:00,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:19:00,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:19:00,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:19:00,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:19:00,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:19:00,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:19:00,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:19:00,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:19:00,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:19:00,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:19:00,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:19:00,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:19:00,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:19:00,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:19:00,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:19:00,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:19:00,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:19:00,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:19:00,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:19:00,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:19:00,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:19:00,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:19:00,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:19:00,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:19:00,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:19:00,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:19:00,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:19:00,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:19:00,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:19:00,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:19:00,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:19:00,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:19:00,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:19:00,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:19:00,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:19:00,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:19:00,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:19:00,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:19:00,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:19:00,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:19:00,800 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-25 23:19:00,833 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:19:00,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:19:00,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:19:00,835 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:19:00,836 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:19:00,837 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:19:00,837 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:19:00,837 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:19:00,837 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:19:00,838 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:19:00,839 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:19:00,839 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:19:00,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:19:00,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:19:00,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:19:00,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:19:00,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:19:00,841 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:19:00,841 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 23:19:00,841 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 23:19:00,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:19:00,841 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:19:00,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:19:00,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:19:00,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 23:19:00,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:19:00,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:19:00,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:19:00,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:19:00,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:19:00,844 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 23:19:00,844 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 23:19:00,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:19:00,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:19:00,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 23:19:00,845 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_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71c685f028ed91d7b5a9714e56e64b437d5e492a38be11760a5871f4cde664d2 [2022-11-25 23:19:01,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:19:01,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:19:01,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:19:01,247 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:19:01,247 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:19:01,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c [2022-11-25 23:19:04,274 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:19:04,713 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:19:04,714 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c [2022-11-25 23:19:04,732 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/data/acc5b9e67/fa8d22ec0c02444e88cb579f2f6c716f/FLAGa0d954b05 [2022-11-25 23:19:04,771 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/data/acc5b9e67/fa8d22ec0c02444e88cb579f2f6c716f [2022-11-25 23:19:04,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:19:04,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:19:04,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:19:04,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:19:04,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:19:04,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:19:04" (1/1) ... [2022-11-25 23:19:04,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43016002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:19:04, skipping insertion in model container [2022-11-25 23:19:04,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:19:04" (1/1) ... [2022-11-25 23:19:04,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:19:04,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:19:05,027 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_f9115c5d-623e-4827-bdd8-7c8b31fd4118/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c[1107,1120] [2022-11-25 23:19:05,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:19:05,405 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:19:05,417 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_f9115c5d-623e-4827-bdd8-7c8b31fd4118/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal1.c[1107,1120] [2022-11-25 23:19:05,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:19:05,614 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:19:05,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:19:05 WrapperNode [2022-11-25 23:19:05,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:19:05,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:19:05,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:19:05,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:19:05,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:19:05" (1/1) ... [2022-11-25 23:19:05,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:19:05" (1/1) ... [2022-11-25 23:19:05,773 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1064 [2022-11-25 23:19:05,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:19:05,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:19:05,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:19:05,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:19:05,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:19:05" (1/1) ... [2022-11-25 23:19:05,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:19:05" (1/1) ... [2022-11-25 23:19:05,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:19:05" (1/1) ... [2022-11-25 23:19:05,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:19:05" (1/1) ... [2022-11-25 23:19:05,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:19:05" (1/1) ... [2022-11-25 23:19:05,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:19:05" (1/1) ... [2022-11-25 23:19:05,871 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:19:05" (1/1) ... [2022-11-25 23:19:05,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:19:05" (1/1) ... [2022-11-25 23:19:05,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:19:05,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:19:05,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:19:05,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:19:05,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:19:05" (1/1) ... [2022-11-25 23:19:05,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:19:05,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:19:05,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:19:05,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:19:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:19:06,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:19:06,328 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:19:06,330 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:19:07,670 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:19:07,677 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:19:07,678 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:19:07,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:19:07 BoogieIcfgContainer [2022-11-25 23:19:07,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:19:07,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:19:07,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:19:07,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:19:07,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:19:04" (1/3) ... [2022-11-25 23:19:07,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba2880a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:19:07, skipping insertion in model container [2022-11-25 23:19:07,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:19:05" (2/3) ... [2022-11-25 23:19:07,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba2880a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:19:07, skipping insertion in model container [2022-11-25 23:19:07,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:19:07" (3/3) ... [2022-11-25 23:19:07,690 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal1.c [2022-11-25 23:19:07,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:19:07,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:19:07,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:19:07,773 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;@580eba5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:19:07,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:19:07,778 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) [2022-11-25 23:19:07,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:19:07,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:19:07,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:19:07,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:19:07,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:19:07,798 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-25 23:19:07,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:19:07,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627473566] [2022-11-25 23:19:07,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:19:07,817 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 [2022-11-25 23:19:07,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:19:07,823 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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) [2022-11-25 23:19:07,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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 [2022-11-25 23:19:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:19:08,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 23:19:08,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:19:08,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:19:08,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:19:08,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:19:08,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627473566] [2022-11-25 23:19:08,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627473566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:19:08,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:19:08,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:19:08,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748586286] [2022-11-25 23:19:08,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:19:08,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:19:08,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:19:08,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:19:08,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:19:08,477 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) [2022-11-25 23:19:08,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:19:08,768 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-25 23:19:08,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:19:08,772 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 [2022-11-25 23:19:08,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:19:08,781 INFO L225 Difference]: With dead ends: 20 [2022-11-25 23:19:08,784 INFO L226 Difference]: Without dead ends: 11 [2022-11-25 23:19:08,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:19:08,790 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:19:08,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:19:08,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-25 23:19:08,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-25 23:19:08,830 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) [2022-11-25 23:19:08,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-25 23:19:08,832 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-25 23:19:08,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:19:08,833 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-25 23:19:08,833 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) [2022-11-25 23:19:08,833 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-25 23:19:08,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:19:08,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:19:08,834 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 23:19:08,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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 [2022-11-25 23:19:09,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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 [2022-11-25 23:19:09,058 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:19:09,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:19:09,058 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-25 23:19:09,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:19:09,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056283829] [2022-11-25 23:19:09,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:19:09,061 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 [2022-11-25 23:19:09,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:19:09,062 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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) [2022-11-25 23:19:09,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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 [2022-11-25 23:19:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:19:09,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-25 23:19:09,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:19:10,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:19:10,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:19:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:19:11,044 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:19:11,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056283829] [2022-11-25 23:19:11,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056283829] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:19:11,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1310794627] [2022-11-25 23:19:11,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:19:11,045 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:19:11,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:19:11,080 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:19:11,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-25 23:19:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:19:12,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-25 23:19:12,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:19:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:19:12,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:19:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:19:14,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1310794627] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:19:14,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61286083] [2022-11-25 23:19:14,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:19:14,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:19:14,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:19:14,197 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:19:14,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:19:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:19:14,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-25 23:19:14,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:19:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:19:15,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:19:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:19:16,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61286083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:19:16,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:19:16,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 15 [2022-11-25 23:19:16,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763551053] [2022-11-25 23:19:16,195 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:19:16,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 23:19:16,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:19:16,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 23:19:16,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-11-25 23:19:16,199 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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) [2022-11-25 23:19:16,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:19:16,952 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-25 23:19:16,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 23:19:16,954 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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 [2022-11-25 23:19:16,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:19:16,955 INFO L225 Difference]: With dead ends: 16 [2022-11-25 23:19:16,955 INFO L226 Difference]: Without dead ends: 14 [2022-11-25 23:19:16,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-11-25 23:19:16,957 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:19:16,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 20 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 23:19:16,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-25 23:19:16,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-25 23:19:16,962 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) [2022-11-25 23:19:16,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-25 23:19:16,962 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-25 23:19:16,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:19:16,963 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-25 23:19:16,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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) [2022-11-25 23:19:16,963 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-25 23:19:16,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 23:19:16,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:19:16,964 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 23:19:16,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:19:17,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 23:19:17,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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 [2022-11-25 23:19:17,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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 [2022-11-25 23:19:17,565 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:19:17,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:19:17,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-25 23:19:17,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:19:17,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666430570] [2022-11-25 23:19:17,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 23:19:17,578 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 [2022-11-25 23:19:17,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:19:17,585 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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) [2022-11-25 23:19:17,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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 [2022-11-25 23:19:18,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 23:19:18,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:19:18,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 187 conjunts are in the unsatisfiable core [2022-11-25 23:19:18,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:19:25,139 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:19:25,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:20:41,632 WARN L233 SmtUtils]: Spent 36.94s on a formula simplification. DAG size of input: 535 DAG size of output: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:20:42,667 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:20:42,667 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:20:42,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666430570] [2022-11-25 23:20:42,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666430570] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:20:42,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2147050406] [2022-11-25 23:20:42,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 23:20:42,669 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:20:42,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:20:42,672 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:20:42,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-25 23:20:44,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 23:20:44,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:20:45,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 190 conjunts are in the unsatisfiable core [2022-11-25 23:20:45,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:20:52,752 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:20:52,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:21:22,066 WARN L233 SmtUtils]: Spent 14.06s on a formula simplification. DAG size of input: 430 DAG size of output: 67 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:21:23,068 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:23,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2147050406] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:21:23,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928281481] [2022-11-25 23:21:23,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 23:21:23,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:21:23,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:21:23,071 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:21:23,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 23:21:24,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 23:21:24,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:21:24,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-25 23:21:24,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:21:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:21:31,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:22:57,904 WARN L233 SmtUtils]: Spent 1.03m on a formula simplification. DAG size of input: 622 DAG size of output: 81 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:22:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:22:58,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928281481] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:22:58,528 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:22:58,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6, 6, 6, 6] total 22 [2022-11-25 23:22:58,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506766523] [2022-11-25 23:22:58,528 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:22:58,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 23:22:58,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:22:58,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 23:22:58,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2022-11-25 23:22:58,531 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 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) [2022-11-25 23:22:59,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:22:59,985 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-25 23:22:59,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 23:22:59,986 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 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 [2022-11-25 23:22:59,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:22:59,987 INFO L225 Difference]: With dead ends: 19 [2022-11-25 23:22:59,987 INFO L226 Difference]: Without dead ends: 17 [2022-11-25 23:22:59,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 119.9s TimeCoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2022-11-25 23:22:59,990 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:22:59,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 26 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 23:22:59,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-25 23:22:59,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-25 23:22:59,995 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) [2022-11-25 23:22:59,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-25 23:22:59,996 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-25 23:22:59,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:22:59,996 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-25 23:22:59,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 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) [2022-11-25 23:22:59,997 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-25 23:22:59,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 23:22:59,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:22:59,998 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-25 23:23:00,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-25 23:23:00,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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 [2022-11-25 23:23:00,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-25 23:23:00,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 23:23:00,622 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:23:00,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:00,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-25 23:23:00,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:23:00,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921016145] [2022-11-25 23:23:00,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 23:23:00,625 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 [2022-11-25 23:23:00,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:23:00,626 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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) [2022-11-25 23:23:00,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9115c5d-623e-4827-bdd8-7c8b31fd4118/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 [2022-11-25 23:23:02,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 23:23:02,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:23:02,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 2529 conjuncts, 764 conjunts are in the unsatisfiable core [2022-11-25 23:23:02,361 INFO L286 TraceCheckSpWp]: Computing forward predicates...