./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9 --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 b2961e0c3cff6ba3de8f52f848e2cfbfe98366156ba986ccbf628e37437b6d1d --- 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-6b4ec56 [2022-11-20 19:43:25,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:43:25,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:43:25,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:43:25,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:43:25,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:43:25,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:43:25,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:43:25,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:43:25,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:43:25,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:43:25,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:43:25,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:43:25,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:43:25,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:43:25,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:43:25,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:43:25,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:43:25,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:43:25,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:43:25,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:43:25,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:43:25,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:43:25,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:43:25,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:43:25,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:43:25,696 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:43:25,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:43:25,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:43:25,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:43:25,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:43:25,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:43:25,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:43:25,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:43:25,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:43:25,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:43:25,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:43:25,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:43:25,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:43:25,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:43:25,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:43:25,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 19:43:25,751 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:43:25,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:43:25,752 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:43:25,753 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:43:25,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:43:25,754 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:43:25,754 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:43:25,755 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:43:25,755 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:43:25,755 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:43:25,757 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:43:25,757 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:43:25,757 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:43:25,758 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:43:25,758 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:43:25,758 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:43:25,758 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:43:25,759 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:43:25,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:43:25,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:43:25,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:43:25,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:43:25,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:43:25,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:43:25,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:43:25,762 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:43:25,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:43:25,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:43:25,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:43:25,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:43:25,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:43:25,764 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:43:25,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:43:25,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:43:25,765 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:43:25,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:43:25,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:43:25,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:43:25,766 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_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2961e0c3cff6ba3de8f52f848e2cfbfe98366156ba986ccbf628e37437b6d1d [2022-11-20 19:43:26,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:43:26,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:43:26,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:43:26,100 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:43:26,100 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:43:26,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul1.c [2022-11-20 19:43:29,115 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:43:29,292 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:43:29,293 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul1.c [2022-11-20 19:43:29,304 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/data/5451d0f80/9af0e055ba96419e8bde6165b8f57bcf/FLAGb70106d49 [2022-11-20 19:43:29,325 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/data/5451d0f80/9af0e055ba96419e8bde6165b8f57bcf [2022-11-20 19:43:29,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:43:29,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:43:29,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:43:29,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:43:29,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:43:29,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:43:29" (1/1) ... [2022-11-20 19:43:29,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c9ef42f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:29, skipping insertion in model container [2022-11-20 19:43:29,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:43:29" (1/1) ... [2022-11-20 19:43:29,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:43:29,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:43:29,559 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_87cf4d3c-f1cb-4144-ade8-242dcec9292a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul1.c[1107,1120] [2022-11-20 19:43:29,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:43:29,656 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:43:29,668 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_87cf4d3c-f1cb-4144-ade8-242dcec9292a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul1.c[1107,1120] [2022-11-20 19:43:29,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:43:29,742 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:43:29,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:29 WrapperNode [2022-11-20 19:43:29,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:43:29,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:43:29,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:43:29,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:43:29,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:29" (1/1) ... [2022-11-20 19:43:29,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:29" (1/1) ... [2022-11-20 19:43:29,810 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 178 [2022-11-20 19:43:29,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:43:29,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:43:29,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:43:29,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:43:29,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:29" (1/1) ... [2022-11-20 19:43:29,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:29" (1/1) ... [2022-11-20 19:43:29,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:29" (1/1) ... [2022-11-20 19:43:29,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:29" (1/1) ... [2022-11-20 19:43:29,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:29" (1/1) ... [2022-11-20 19:43:29,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:29" (1/1) ... [2022-11-20 19:43:29,863 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:29" (1/1) ... [2022-11-20 19:43:29,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:29" (1/1) ... [2022-11-20 19:43:29,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:43:29,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:43:29,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:43:29,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:43:29,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:29" (1/1) ... [2022-11-20 19:43:29,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:43:29,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:43:29,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:43:29,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:43:29,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:43:29,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:43:30,097 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:43:30,099 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:43:30,458 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:43:30,498 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:43:30,499 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 19:43:30,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:43:30 BoogieIcfgContainer [2022-11-20 19:43:30,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:43:30,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:43:30,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:43:30,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:43:30,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:43:29" (1/3) ... [2022-11-20 19:43:30,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e0133d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:43:30, skipping insertion in model container [2022-11-20 19:43:30,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:29" (2/3) ... [2022-11-20 19:43:30,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e0133d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:43:30, skipping insertion in model container [2022-11-20 19:43:30,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:43:30" (3/3) ... [2022-11-20 19:43:30,519 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.mul1.c [2022-11-20 19:43:30,539 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:43:30,539 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:43:30,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:43:30,593 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;@5f58b4e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:43:30,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 19:43:30,599 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) [2022-11-20 19:43:30,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 19:43:30,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:30,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 19:43:30,608 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:30,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:30,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-20 19:43:30,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:43:30,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938959637] [2022-11-20 19:43:30,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:30,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:43:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 19:43:30,895 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 19:43:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 19:43:30,950 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 19:43:30,952 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 19:43:30,954 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 19:43:30,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 19:43:30,960 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 19:43:30,964 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 19:43:30,979 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 19:43:30,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:43:30 BoogieIcfgContainer [2022-11-20 19:43:30,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 19:43:30,986 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 19:43:30,986 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 19:43:30,986 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 19:43:30,986 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:43:30" (3/4) ... [2022-11-20 19:43:30,989 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 19:43:30,990 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 19:43:30,991 INFO L158 Benchmark]: Toolchain (without parser) took 1660.86ms. Allocated memory is still 186.6MB. Free memory was 139.5MB in the beginning and 148.4MB in the end (delta: -8.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:43:30,991 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 142.6MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:43:30,992 INFO L158 Benchmark]: CACSL2BoogieTranslator took 409.71ms. Allocated memory is still 186.6MB. Free memory was 139.5MB in the beginning and 127.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 19:43:30,992 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.48ms. Allocated memory is still 186.6MB. Free memory was 127.0MB in the beginning and 124.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:43:30,993 INFO L158 Benchmark]: Boogie Preprocessor took 63.90ms. Allocated memory is still 186.6MB. Free memory was 124.2MB in the beginning and 122.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:43:30,994 INFO L158 Benchmark]: RCFGBuilder took 623.93ms. Allocated memory is still 186.6MB. Free memory was 122.1MB in the beginning and 92.8MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-20 19:43:30,994 INFO L158 Benchmark]: TraceAbstraction took 480.77ms. Allocated memory is still 186.6MB. Free memory was 92.1MB in the beginning and 149.4MB in the end (delta: -57.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:43:30,995 INFO L158 Benchmark]: Witness Printer took 4.27ms. Allocated memory is still 186.6MB. Free memory was 149.4MB in the beginning and 148.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:43:30,998 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 142.6MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 409.71ms. Allocated memory is still 186.6MB. Free memory was 139.5MB in the beginning and 127.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.48ms. Allocated memory is still 186.6MB. Free memory was 127.0MB in the beginning and 124.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.90ms. Allocated memory is still 186.6MB. Free memory was 124.2MB in the beginning and 122.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 623.93ms. Allocated memory is still 186.6MB. Free memory was 122.1MB in the beginning and 92.8MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 480.77ms. Allocated memory is still 186.6MB. Free memory was 92.1MB in the beginning and 149.4MB in the end (delta: -57.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.27ms. Allocated memory is still 186.6MB. Free memory was 149.4MB in the beginning and 148.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 87, overapproximation of bitwiseAnd at line 74. 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_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 32); [L29] const SORT_5 msb_SORT_5 = (SORT_5)1 << (32 - 1); [L31] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 64); [L32] const SORT_9 msb_SORT_9 = (SORT_9)1 << (64 - 1); [L34] const SORT_9 var_10 = 0; [L35] const SORT_1 var_18 = 1; [L36] const SORT_5 var_22 = 0; [L38] SORT_1 input_2; [L39] SORT_1 input_3; [L40] SORT_1 input_4; [L41] SORT_5 input_6; [L42] SORT_5 input_7; [L43] SORT_1 input_8; [L45] SORT_9 state_11 = __VERIFIER_nondet_ulong() & mask_SORT_9; [L46] SORT_9 state_13 = __VERIFIER_nondet_ulong() & mask_SORT_9; [L47] SORT_5 state_23 = __VERIFIER_nondet_uint() & mask_SORT_5; [L48] SORT_5 state_25 = __VERIFIER_nondet_uint() & mask_SORT_5; [L49] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L50] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L51] SORT_5 state_31 = __VERIFIER_nondet_uint() & mask_SORT_5; [L52] SORT_5 state_33 = __VERIFIER_nondet_uint() & mask_SORT_5; [L54] SORT_9 init_12_arg_1 = var_10; [L55] state_11 = init_12_arg_1 [L56] SORT_9 init_14_arg_1 = var_10; [L57] state_13 = init_14_arg_1 [L58] SORT_5 init_24_arg_1 = var_22; [L59] state_23 = init_24_arg_1 [L60] SORT_5 init_26_arg_1 = var_22; [L61] state_25 = init_26_arg_1 [L62] SORT_1 init_28_arg_1 = var_18; [L63] state_27 = init_28_arg_1 [L64] SORT_1 init_30_arg_1 = var_18; [L65] state_29 = init_30_arg_1 [L66] SORT_5 init_32_arg_1 = var_22; [L67] state_31 = init_32_arg_1 [L68] SORT_5 init_34_arg_1 = var_22; [L69] state_33 = init_34_arg_1 VAL [init_12_arg_1=0, init_14_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=1, init_30_arg_1=1, init_32_arg_1=0, init_34_arg_1=0, mask_SORT_1=1, mask_SORT_5=4294967295, mask_SORT_9=18446744073709551615, msb_SORT_1=1, msb_SORT_5=2147483648, msb_SORT_9=9223372036854775808, state_11=0, state_13=0, state_23=0, state_25=0, state_27=1, state_29=1, state_31=0, state_33=0, var_10=0, var_18=1, var_22=0] [L72] input_2 = __VERIFIER_nondet_uchar() [L73] input_3 = __VERIFIER_nondet_uchar() [L74] input_3 = input_3 & mask_SORT_1 [L75] input_4 = __VERIFIER_nondet_uchar() [L76] input_4 = input_4 & mask_SORT_1 [L77] input_6 = __VERIFIER_nondet_uint() [L78] input_7 = __VERIFIER_nondet_uint() [L79] input_8 = __VERIFIER_nondet_uchar() [L80] input_8 = input_8 & mask_SORT_1 [L83] SORT_9 var_15_arg_0 = state_11; [L84] SORT_9 var_15_arg_1 = state_13; [L85] SORT_1 var_15 = var_15_arg_0 == var_15_arg_1; [L86] SORT_1 var_19_arg_0 = var_15; [L87] SORT_1 var_19 = ~var_19_arg_0; [L88] SORT_1 var_20_arg_0 = var_18; [L89] SORT_1 var_20_arg_1 = var_19; [L90] SORT_1 var_20 = var_20_arg_0 & var_20_arg_1; [L91] var_20 = var_20 & mask_SORT_1 [L92] SORT_1 bad_21_arg_0 = var_20; [L93] CALL __VERIFIER_assert(!(bad_21_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: 0.4s, 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 [2022-11-20 19:43:31,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/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_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9 --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 b2961e0c3cff6ba3de8f52f848e2cfbfe98366156ba986ccbf628e37437b6d1d --- 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-6b4ec56 [2022-11-20 19:43:33,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:43:33,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:43:33,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:43:33,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:43:33,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:43:33,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:43:33,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:43:33,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:43:33,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:43:33,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:43:33,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:43:33,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:43:33,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:43:33,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:43:33,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:43:33,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:43:33,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:43:33,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:43:33,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:43:33,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:43:33,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:43:33,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:43:33,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:43:33,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:43:33,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:43:33,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:43:33,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:43:33,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:43:33,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:43:33,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:43:33,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:43:33,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:43:33,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:43:33,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:43:33,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:43:33,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:43:33,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:43:33,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:43:33,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:43:33,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:43:33,672 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-20 19:43:33,709 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:43:33,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:43:33,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:43:33,711 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:43:33,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:43:33,712 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:43:33,712 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:43:33,712 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:43:33,712 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:43:33,713 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:43:33,714 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:43:33,714 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:43:33,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:43:33,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:43:33,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:43:33,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:43:33,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:43:33,716 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 19:43:33,716 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 19:43:33,716 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 19:43:33,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:43:33,716 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:43:33,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:43:33,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:43:33,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 19:43:33,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:43:33,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:43:33,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:43:33,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:43:33,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:43:33,718 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 19:43:33,719 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 19:43:33,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:43:33,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:43:33,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 19:43:33,720 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2961e0c3cff6ba3de8f52f848e2cfbfe98366156ba986ccbf628e37437b6d1d [2022-11-20 19:43:34,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:43:34,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:43:34,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:43:34,111 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:43:34,112 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:43:34,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul1.c [2022-11-20 19:43:37,159 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:43:37,416 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:43:37,428 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul1.c [2022-11-20 19:43:37,441 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/data/7dec6f86c/09d55b0d4fd146bdaba8692c4bb94ab7/FLAG13f94eada [2022-11-20 19:43:37,454 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/data/7dec6f86c/09d55b0d4fd146bdaba8692c4bb94ab7 [2022-11-20 19:43:37,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:43:37,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:43:37,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:43:37,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:43:37,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:43:37,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:43:37" (1/1) ... [2022-11-20 19:43:37,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dce6f0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:37, skipping insertion in model container [2022-11-20 19:43:37,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:43:37" (1/1) ... [2022-11-20 19:43:37,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:43:37,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:43:37,719 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_87cf4d3c-f1cb-4144-ade8-242dcec9292a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul1.c[1107,1120] [2022-11-20 19:43:37,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:43:37,794 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:43:37,806 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_87cf4d3c-f1cb-4144-ade8-242dcec9292a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.mul1.c[1107,1120] [2022-11-20 19:43:37,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:43:37,892 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:43:37,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:37 WrapperNode [2022-11-20 19:43:37,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:43:37,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:43:37,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:43:37,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:43:37,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:37" (1/1) ... [2022-11-20 19:43:37,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:37" (1/1) ... [2022-11-20 19:43:37,961 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 178 [2022-11-20 19:43:37,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:43:37,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:43:37,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:43:37,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:43:37,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:37" (1/1) ... [2022-11-20 19:43:37,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:37" (1/1) ... [2022-11-20 19:43:38,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:37" (1/1) ... [2022-11-20 19:43:38,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:37" (1/1) ... [2022-11-20 19:43:38,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:37" (1/1) ... [2022-11-20 19:43:38,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:37" (1/1) ... [2022-11-20 19:43:38,027 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:37" (1/1) ... [2022-11-20 19:43:38,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:37" (1/1) ... [2022-11-20 19:43:38,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:43:38,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:43:38,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:43:38,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:43:38,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:37" (1/1) ... [2022-11-20 19:43:38,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:43:38,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:43:38,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:43:38,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:43:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:43:38,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:43:38,296 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:43:38,298 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:43:38,743 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:43:38,750 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:43:38,750 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 19:43:38,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:43:38 BoogieIcfgContainer [2022-11-20 19:43:38,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:43:38,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:43:38,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:43:38,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:43:38,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:43:37" (1/3) ... [2022-11-20 19:43:38,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6aa9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:43:38, skipping insertion in model container [2022-11-20 19:43:38,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:43:37" (2/3) ... [2022-11-20 19:43:38,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6aa9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:43:38, skipping insertion in model container [2022-11-20 19:43:38,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:43:38" (3/3) ... [2022-11-20 19:43:38,760 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.mul1.c [2022-11-20 19:43:38,779 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:43:38,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:43:38,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:43:38,851 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;@1b977436, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:43:38,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 19:43:38,856 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) [2022-11-20 19:43:38,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 19:43:38,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:38,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 19:43:38,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:38,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:38,896 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-20 19:43:38,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:43:38,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071696461] [2022-11-20 19:43:38,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:38,911 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 [2022-11-20 19:43:38,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:43:38,919 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 19:43:38,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 19:43:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:39,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 19:43:39,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:43:39,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:43:39,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:43:39,284 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:43:39,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071696461] [2022-11-20 19:43:39,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071696461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:43:39,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:43:39,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:43:39,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641050987] [2022-11-20 19:43:39,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:43:39,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:43:39,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:43:39,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:43:39,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:43:39,360 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) [2022-11-20 19:43:39,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:43:39,740 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-20 19:43:39,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:43:39,745 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 [2022-11-20 19:43:39,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:43:39,752 INFO L225 Difference]: With dead ends: 20 [2022-11-20 19:43:39,752 INFO L226 Difference]: Without dead ends: 11 [2022-11-20 19:43:39,754 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 [2022-11-20 19:43:39,758 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:43:39,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 19:43:39,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-20 19:43:39,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-20 19:43:39,791 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) [2022-11-20 19:43:39,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-20 19:43:39,793 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-20 19:43:39,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:43:39,794 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-20 19:43:39,794 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) [2022-11-20 19:43:39,794 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-20 19:43:39,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 19:43:39,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:43:39,795 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-20 19:43:39,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 19:43:39,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 19:43:39,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:43:40,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:43:40,000 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-20 19:43:40,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:43:40,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539545856] [2022-11-20 19:43:40,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:43:40,002 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 [2022-11-20 19:43:40,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:43:40,004 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 19:43:40,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 19:43:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:43:40,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 19:43:40,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:43:40,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:43:40,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:43:54,106 WARN L233 SmtUtils]: Spent 9.53s on a formula simplification. DAG size of input: 68 DAG size of output: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:44:01,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:44:01,505 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:44:01,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539545856] [2022-11-20 19:44:01,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539545856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:44:01,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [419155842] [2022-11-20 19:44:01,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:44:01,506 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 19:44:01,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 19:44:01,545 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 19:44:01,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-20 19:44:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:44:01,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 19:44:01,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:44:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:44:02,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:44:20,621 WARN L233 SmtUtils]: Spent 8.52s on a formula simplification. DAG size of input: 62 DAG size of output: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:44:21,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:44:21,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [419155842] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:44:21,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103614702] [2022-11-20 19:44:21,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:44:21,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:44:21,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:44:21,394 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:44:21,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 19:44:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:44:21,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-20 19:44:21,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:44:23,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:44:23,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:45:08,024 WARN L233 SmtUtils]: Spent 35.19s on a formula simplification. DAG size of input: 75 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:45:17,276 WARN L233 SmtUtils]: Spent 6.61s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:45:17,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:45:17,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103614702] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:45:17,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 19:45:17,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5, 5, 7, 6] total 16 [2022-11-20 19:45:17,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760341458] [2022-11-20 19:45:17,940 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 19:45:17,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 19:45:17,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:45:17,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 19:45:17,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=185, Unknown=6, NotChecked=0, Total=240 [2022-11-20 19:45:17,943 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 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) [2022-11-20 19:45:19,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:45:19,734 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-11-20 19:45:19,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 19:45:19,735 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 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 [2022-11-20 19:45:19,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:45:19,736 INFO L225 Difference]: With dead ends: 14 [2022-11-20 19:45:19,736 INFO L226 Difference]: Without dead ends: 12 [2022-11-20 19:45:19,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 87.6s TimeCoverageRelationStatistics Valid=96, Invalid=278, Unknown=6, NotChecked=0, Total=380 [2022-11-20 19:45:19,738 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:45:19,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 29 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2022-11-20 19:45:19,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-20 19:45:19,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-20 19:45:19,741 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) [2022-11-20 19:45:19,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-20 19:45:19,742 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-20 19:45:19,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:45:19,742 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-20 19:45:19,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 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) [2022-11-20 19:45:19,742 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-20 19:45:19,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 19:45:19,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:45:19,743 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-20 19:45:19,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 19:45:19,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 19:45:20,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-20 19:45:20,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 19:45:20,359 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:45:20,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:45:20,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-20 19:45:20,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:45:20,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836089996] [2022-11-20 19:45:20,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 19:45:20,361 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 [2022-11-20 19:45:20,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:45:20,362 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 19:45:20,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87cf4d3c-f1cb-4144-ade8-242dcec9292a/bin/utaipan-6cKwYrpEi9/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