./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/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_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/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_d004066a-531a-4ee0-97ad-65a762381f2b/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 7352d046b5316fb81d2468cb9250595960c3288e5e43adc5f64e1431a57b211a --- 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 23:21:34,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:21:34,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:21:34,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:21:34,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:21:34,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:21:34,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:21:34,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:21:34,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:21:34,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:21:34,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:21:34,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:21:34,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:21:34,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:21:34,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:21:34,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:21:34,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:21:34,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:21:34,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:21:34,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:21:34,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:21:34,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:21:34,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:21:34,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:21:34,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:21:34,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:21:34,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:21:34,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:21:34,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:21:34,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:21:34,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:21:34,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:21:34,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:21:34,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:21:34,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:21:34,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:21:34,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:21:34,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:21:34,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:21:34,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:21:34,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:21:34,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 23:21:34,760 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:21:34,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:21:34,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:21:34,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:21:34,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:21:34,773 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:21:34,773 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:21:34,774 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:21:34,774 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:21:34,774 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:21:34,776 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:21:34,776 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:21:34,776 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:21:34,777 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:21:34,777 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:21:34,777 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:21:34,777 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:21:34,778 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:21:34,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:21:34,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:21:34,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:21:34,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:21:34,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:21:34,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:21:34,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:21:34,782 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:21:34,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:21:34,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:21:34,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:21:34,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:21:34,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:21:34,784 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:21:34,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:21:34,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:21:34,785 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:21:34,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:21:34,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:21:34,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:21:34,786 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_d004066a-531a-4ee0-97ad-65a762381f2b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7352d046b5316fb81d2468cb9250595960c3288e5e43adc5f64e1431a57b211a [2022-11-25 23:21:35,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:21:35,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:21:35,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:21:35,121 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:21:35,122 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:21:35,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c [2022-11-25 23:21:38,512 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:21:38,943 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:21:38,944 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c [2022-11-25 23:21:38,976 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/data/7fc0706c2/0a6a7b5902ef4d4a8f85f738ebcae068/FLAG3f6121226 [2022-11-25 23:21:38,999 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/data/7fc0706c2/0a6a7b5902ef4d4a8f85f738ebcae068 [2022-11-25 23:21:39,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:21:39,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:21:39,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:21:39,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:21:39,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:21:39,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:21:39" (1/1) ... [2022-11-25 23:21:39,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17337c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:39, skipping insertion in model container [2022-11-25 23:21:39,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:21:39" (1/1) ... [2022-11-25 23:21:39,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:21:39,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:21:39,343 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_d004066a-531a-4ee0-97ad-65a762381f2b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c[1107,1120] [2022-11-25 23:21:39,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:21:39,978 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:21:39,992 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_d004066a-531a-4ee0-97ad-65a762381f2b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c[1107,1120] [2022-11-25 23:21:40,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:21:40,227 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:21:40,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:40 WrapperNode [2022-11-25 23:21:40,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:21:40,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:21:40,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:21:40,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:21:40,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:40" (1/1) ... [2022-11-25 23:21:40,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:40" (1/1) ... [2022-11-25 23:21:40,477 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1884 [2022-11-25 23:21:40,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:21:40,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:21:40,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:21:40,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:21:40,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:40" (1/1) ... [2022-11-25 23:21:40,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:40" (1/1) ... [2022-11-25 23:21:40,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:40" (1/1) ... [2022-11-25 23:21:40,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:40" (1/1) ... [2022-11-25 23:21:40,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:40" (1/1) ... [2022-11-25 23:21:40,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:40" (1/1) ... [2022-11-25 23:21:40,570 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:40" (1/1) ... [2022-11-25 23:21:40,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:40" (1/1) ... [2022-11-25 23:21:40,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:21:40,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:21:40,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:21:40,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:21:40,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:40" (1/1) ... [2022-11-25 23:21:40,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:21:40,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:21:40,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:21:40,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:21:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:21:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:21:41,453 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:21:41,456 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:23:15,715 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:23:15,778 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:23:15,782 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:23:15,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:23:15 BoogieIcfgContainer [2022-11-25 23:23:15,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:23:15,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:23:15,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:23:15,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:23:15,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:21:39" (1/3) ... [2022-11-25 23:23:15,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:23:15, skipping insertion in model container [2022-11-25 23:23:15,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:21:40" (2/3) ... [2022-11-25 23:23:15,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:23:15, skipping insertion in model container [2022-11-25 23:23:15,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:23:15" (3/3) ... [2022-11-25 23:23:15,806 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_bufferAlloc.c [2022-11-25 23:23:15,831 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:23:15,832 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:23:15,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:23:15,917 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;@e0f82f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:23:15,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:23:15,922 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 23:23:15,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 23:23:15,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:15,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 23:23:15,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:23:15,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:15,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-25 23:23:15,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:23:15,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352133549] [2022-11-25 23:23:15,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:15,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:23:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:23:16,250 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:23:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:23:16,463 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:23:16,467 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:23:16,468 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 23:23:16,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:23:16,477 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-25 23:23:16,483 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:23:16,518 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-25 23:23:16,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:23:16 BoogieIcfgContainer [2022-11-25 23:23:16,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:23:16,530 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:23:16,530 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:23:16,531 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:23:16,531 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:23:15" (3/4) ... [2022-11-25 23:23:16,536 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:23:16,536 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:23:16,537 INFO L158 Benchmark]: Toolchain (without parser) took 97527.08ms. Allocated memory was 119.5MB in the beginning and 1.0GB in the end (delta: 891.3MB). Free memory was 75.2MB in the beginning and 356.9MB in the end (delta: -281.7MB). Peak memory consumption was 611.5MB. Max. memory is 16.1GB. [2022-11-25 23:23:16,538 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 119.5MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:23:16,539 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1213.84ms. Allocated memory was 119.5MB in the beginning and 163.6MB in the end (delta: 44.0MB). Free memory was 74.9MB in the beginning and 106.9MB in the end (delta: -32.0MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. [2022-11-25 23:23:16,540 INFO L158 Benchmark]: Boogie Procedure Inliner took 248.50ms. Allocated memory is still 163.6MB. Free memory was 106.1MB in the beginning and 89.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 23:23:16,540 INFO L158 Benchmark]: Boogie Preprocessor took 127.45ms. Allocated memory is still 163.6MB. Free memory was 89.3MB in the beginning and 80.8MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 23:23:16,541 INFO L158 Benchmark]: RCFGBuilder took 95179.56ms. Allocated memory was 163.6MB in the beginning and 1.0GB in the end (delta: 847.2MB). Free memory was 80.8MB in the beginning and 394.7MB in the end (delta: -313.8MB). Peak memory consumption was 582.3MB. Max. memory is 16.1GB. [2022-11-25 23:23:16,542 INFO L158 Benchmark]: TraceAbstraction took 738.37ms. Allocated memory is still 1.0GB. Free memory was 393.6MB in the beginning and 358.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-25 23:23:16,543 INFO L158 Benchmark]: Witness Printer took 5.81ms. Allocated memory is still 1.0GB. Free memory is still 356.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:23:16,547 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 119.5MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1213.84ms. Allocated memory was 119.5MB in the beginning and 163.6MB in the end (delta: 44.0MB). Free memory was 74.9MB in the beginning and 106.9MB in the end (delta: -32.0MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 248.50ms. Allocated memory is still 163.6MB. Free memory was 106.1MB in the beginning and 89.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 127.45ms. Allocated memory is still 163.6MB. Free memory was 89.3MB in the beginning and 80.8MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 95179.56ms. Allocated memory was 163.6MB in the beginning and 1.0GB in the end (delta: 847.2MB). Free memory was 80.8MB in the beginning and 394.7MB in the end (delta: -313.8MB). Peak memory consumption was 582.3MB. Max. memory is 16.1GB. * TraceAbstraction took 738.37ms. Allocated memory is still 1.0GB. Free memory was 393.6MB in the beginning and 358.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 5.81ms. Allocated memory is still 1.0GB. Free memory is still 356.9MB. 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 147, overapproximation of bitwiseAnd at line 136. 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_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L31] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 5); [L32] const SORT_7 msb_SORT_7 = (SORT_7)1 << (5 - 1); [L34] const SORT_22 mask_SORT_22 = (SORT_22)-1 >> (sizeof(SORT_22) * 8 - 32); [L35] const SORT_22 msb_SORT_22 = (SORT_22)1 << (32 - 1); [L37] const SORT_7 var_8 = 0; [L38] const SORT_7 var_11 = 16; [L39] const SORT_1 var_15 = 1; [L40] const SORT_1 var_19 = 0; [L41] const SORT_22 var_23 = 0; [L42] const SORT_22 var_24 = 15; [L43] const SORT_22 var_74 = 14; [L44] const SORT_22 var_92 = 13; [L45] const SORT_22 var_110 = 12; [L46] const SORT_22 var_128 = 11; [L47] const SORT_22 var_146 = 10; [L48] const SORT_22 var_164 = 9; [L49] const SORT_22 var_182 = 8; [L50] const SORT_22 var_200 = 7; [L51] const SORT_22 var_218 = 6; [L52] const SORT_22 var_236 = 5; [L53] const SORT_22 var_254 = 4; [L54] const SORT_22 var_272 = 3; [L55] const SORT_22 var_290 = 2; [L56] const SORT_22 var_308 = 1; [L57] const SORT_4 var_347 = 0; [L58] const SORT_22 var_351 = 16; [L60] SORT_1 input_2; [L61] SORT_1 input_3; [L62] SORT_4 input_5; [L63] SORT_1 input_6; [L64] SORT_1 input_386; [L65] SORT_4 input_388; [L66] SORT_1 input_404; [L67] SORT_4 input_408; [L69] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L70] SORT_1 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L71] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L72] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L73] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] SORT_1 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_38 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_66 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_345 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_4 state_348 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L90] SORT_7 init_10_arg_1 = var_8; [L91] state_9 = init_10_arg_1 [L92] SORT_1 init_21_arg_1 = var_19; [L93] state_20 = init_21_arg_1 [L94] SORT_1 init_26_arg_1 = var_19; [L95] state_25 = init_26_arg_1 [L96] SORT_1 init_28_arg_1 = var_19; [L97] state_27 = init_28_arg_1 [L98] SORT_1 init_31_arg_1 = var_19; [L99] state_30 = init_31_arg_1 [L100] SORT_1 init_33_arg_1 = var_19; [L101] state_32 = init_33_arg_1 [L102] SORT_1 init_37_arg_1 = var_19; [L103] state_36 = init_37_arg_1 [L104] SORT_1 init_39_arg_1 = var_19; [L105] state_38 = init_39_arg_1 [L106] SORT_1 init_42_arg_1 = var_19; [L107] state_41 = init_42_arg_1 [L108] SORT_1 init_44_arg_1 = var_19; [L109] state_43 = init_44_arg_1 [L110] SORT_1 init_49_arg_1 = var_19; [L111] state_48 = init_49_arg_1 [L112] SORT_1 init_51_arg_1 = var_19; [L113] state_50 = init_51_arg_1 [L114] SORT_1 init_54_arg_1 = var_19; [L115] state_53 = init_54_arg_1 [L116] SORT_1 init_56_arg_1 = var_19; [L117] state_55 = init_56_arg_1 [L118] SORT_1 init_60_arg_1 = var_19; [L119] state_59 = init_60_arg_1 [L120] SORT_1 init_62_arg_1 = var_19; [L121] state_61 = init_62_arg_1 [L122] SORT_1 init_65_arg_1 = var_19; [L123] state_64 = init_65_arg_1 [L124] SORT_1 init_67_arg_1 = var_19; [L125] state_66 = init_67_arg_1 [L126] SORT_1 init_346_arg_1 = var_19; [L127] state_345 = init_346_arg_1 [L128] SORT_4 init_349_arg_1 = var_347; [L129] state_348 = init_349_arg_1 VAL [init_10_arg_1=0, init_21_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_346_arg_1=0, init_349_arg_1=0, init_37_arg_1=0, init_39_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_49_arg_1=0, init_51_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_65_arg_1=0, init_67_arg_1=0, mask_SORT_1=1, mask_SORT_22=4294967295, mask_SORT_4=15, mask_SORT_7=31, msb_SORT_1=1, msb_SORT_22=2147483648, msb_SORT_4=8, msb_SORT_7=16, state_20=0, state_25=0, state_27=0, state_30=0, state_32=0, state_345=0, state_348=0, state_36=0, state_38=0, state_41=0, state_43=0, state_48=0, state_50=0, state_53=0, state_55=0, state_59=0, state_61=0, state_64=0, state_66=0, state_9=0, var_11=16, var_110=12, var_128=11, var_146=10, var_15=1, var_164=9, var_182=8, var_19=0, var_200=7, var_218=6, var_23=0, var_236=5, var_24=15, var_254=4, var_272=3, var_290=2, var_308=1, var_347=0, var_351=16, var_74=14, var_8=0, var_92=13] [L132] input_2 = __VERIFIER_nondet_uchar() [L133] input_3 = __VERIFIER_nondet_uchar() [L134] input_5 = __VERIFIER_nondet_uchar() [L135] input_6 = __VERIFIER_nondet_uchar() [L136] input_6 = input_6 & mask_SORT_1 [L137] input_386 = __VERIFIER_nondet_uchar() [L138] input_388 = __VERIFIER_nondet_uchar() [L139] input_404 = __VERIFIER_nondet_uchar() [L140] input_408 = __VERIFIER_nondet_uchar() [L143] SORT_7 var_12_arg_0 = state_9; [L144] SORT_7 var_12_arg_1 = var_11; [L145] SORT_1 var_12 = var_12_arg_0 <= var_12_arg_1; [L146] SORT_1 var_16_arg_0 = var_12; [L147] SORT_1 var_16 = ~var_16_arg_0; [L148] SORT_1 var_17_arg_0 = var_15; [L149] SORT_1 var_17_arg_1 = var_16; [L150] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L151] var_17 = var_17 & mask_SORT_1 [L152] SORT_1 bad_18_arg_0 = var_17; [L153] CALL __VERIFIER_assert(!(bad_18_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s 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 23:23:16,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/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_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/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_d004066a-531a-4ee0-97ad-65a762381f2b/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 7352d046b5316fb81d2468cb9250595960c3288e5e43adc5f64e1431a57b211a --- 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 23:23:19,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:23:19,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:23:19,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:23:19,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:23:19,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:23:19,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:23:19,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:23:19,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:23:19,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:23:19,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:23:19,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:23:19,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:23:19,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:23:19,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:23:19,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:23:19,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:23:19,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:23:19,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:23:19,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:23:19,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:23:19,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:23:19,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:23:19,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:23:19,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:23:19,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:23:19,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:23:19,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:23:19,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:23:19,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:23:19,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:23:19,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:23:19,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:23:19,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:23:19,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:23:19,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:23:19,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:23:19,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:23:19,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:23:19,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:23:19,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:23:19,676 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-25 23:23:19,731 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:23:19,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:23:19,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:23:19,734 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:23:19,735 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:23:19,735 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:23:19,735 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:23:19,736 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:23:19,736 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:23:19,736 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:23:19,738 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:23:19,738 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:23:19,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:23:19,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:23:19,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:23:19,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:23:19,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:23:19,741 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:23:19,741 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 23:23:19,741 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 23:23:19,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:23:19,742 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:23:19,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:23:19,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:23:19,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 23:23:19,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:23:19,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:23:19,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:23:19,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:23:19,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:23:19,745 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 23:23:19,745 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 23:23:19,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:23:19,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:23:19,746 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 23:23:19,746 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_d004066a-531a-4ee0-97ad-65a762381f2b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7352d046b5316fb81d2468cb9250595960c3288e5e43adc5f64e1431a57b211a [2022-11-25 23:23:20,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:23:20,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:23:20,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:23:20,351 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:23:20,352 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:23:20,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c [2022-11-25 23:23:24,000 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:23:24,558 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:23:24,559 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c [2022-11-25 23:23:24,587 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/data/1000574d4/26c9d04acca24399a2ec4783b4d31dd9/FLAGf6e065699 [2022-11-25 23:23:24,611 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/data/1000574d4/26c9d04acca24399a2ec4783b4d31dd9 [2022-11-25 23:23:24,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:23:24,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:23:24,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:23:24,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:23:24,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:23:24,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:23:24" (1/1) ... [2022-11-25 23:23:24,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6987387c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:24, skipping insertion in model container [2022-11-25 23:23:24,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:23:24" (1/1) ... [2022-11-25 23:23:24,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:23:24,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:23:25,016 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_d004066a-531a-4ee0-97ad-65a762381f2b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c[1107,1120] [2022-11-25 23:23:25,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:23:25,514 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:23:25,552 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_d004066a-531a-4ee0-97ad-65a762381f2b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bufferAlloc.c[1107,1120] [2022-11-25 23:23:25,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:23:25,723 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:23:25,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:25 WrapperNode [2022-11-25 23:23:25,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:23:25,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:23:25,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:23:25,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:23:25,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:25" (1/1) ... [2022-11-25 23:23:25,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:25" (1/1) ... [2022-11-25 23:23:25,913 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1884 [2022-11-25 23:23:25,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:23:25,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:23:25,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:23:25,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:23:25,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:25" (1/1) ... [2022-11-25 23:23:25,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:25" (1/1) ... [2022-11-25 23:23:25,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:25" (1/1) ... [2022-11-25 23:23:25,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:25" (1/1) ... [2022-11-25 23:23:25,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:25" (1/1) ... [2022-11-25 23:23:25,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:25" (1/1) ... [2022-11-25 23:23:25,999 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:25" (1/1) ... [2022-11-25 23:23:26,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:25" (1/1) ... [2022-11-25 23:23:26,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:23:26,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:23:26,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:23:26,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:23:26,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:25" (1/1) ... [2022-11-25 23:23:26,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:23:26,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:23:26,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:23:26,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:23:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:23:26,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:23:26,887 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:23:26,889 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:23:30,841 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:23:30,856 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:23:30,857 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:23:30,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:23:30 BoogieIcfgContainer [2022-11-25 23:23:30,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:23:30,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:23:30,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:23:30,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:23:30,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:23:24" (1/3) ... [2022-11-25 23:23:30,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ddafc16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:23:30, skipping insertion in model container [2022-11-25 23:23:30,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:23:25" (2/3) ... [2022-11-25 23:23:30,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ddafc16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:23:30, skipping insertion in model container [2022-11-25 23:23:30,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:23:30" (3/3) ... [2022-11-25 23:23:30,877 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_bufferAlloc.c [2022-11-25 23:23:30,901 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:23:30,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:23:30,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:23:30,986 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;@6ed1cd7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:23:30,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:23:30,992 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 23:23:30,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 23:23:30,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:31,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 23:23:31,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:23:31,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:31,007 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-25 23:23:31,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:23:31,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484751911] [2022-11-25 23:23:31,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:31,024 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 23:23:31,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:23:31,031 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/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 23:23:31,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/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 23:23:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:31,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 23:23:31,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:23:31,842 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 23:23:31,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:23:31,843 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:23:31,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484751911] [2022-11-25 23:23:31,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484751911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:23:31,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:23:31,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:23:31,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110592507] [2022-11-25 23:23:31,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:23:31,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:23:31,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:23:31,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:23:31,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:23:31,897 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 23:23:32,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:32,252 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-25 23:23:32,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:23:32,255 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 23:23:32,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:32,265 INFO L225 Difference]: With dead ends: 20 [2022-11-25 23:23:32,266 INFO L226 Difference]: Without dead ends: 11 [2022-11-25 23:23:32,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:23:32,274 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 [2022-11-25 23:23:32,275 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] [2022-11-25 23:23:32,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-25 23:23:32,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-25 23:23:32,313 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 23:23:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-25 23:23:32,315 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-25 23:23:32,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:32,316 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-25 23:23:32,317 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 23:23:32,317 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-25 23:23:32,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:23:32,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:32,318 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 23:23:32,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/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 23:23:32,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/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 23:23:32,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:23:32,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:32,535 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-25 23:23:32,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:23:32,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060715313] [2022-11-25 23:23:32,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:32,540 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 23:23:32,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:23:32,542 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/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 23:23:32,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/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 23:23:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:34,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-25 23:23:34,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:23:34,339 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 23:23:34,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:23:34,761 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 23:23:34,762 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:23:34,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060715313] [2022-11-25 23:23:34,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060715313] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:23:34,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [208859147] [2022-11-25 23:23:34,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:34,769 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:23:34,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:23:34,801 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:23:34,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-25 23:23:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:37,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-25 23:23:37,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:23:37,176 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 23:23:37,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:23:37,449 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 23:23:37,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [208859147] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:23:37,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546694975] [2022-11-25 23:23:37,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:23:37,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:23:37,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:23:37,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:23:37,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:23:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:23:38,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-25 23:23:38,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:23:38,693 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 23:23:38,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:23:39,132 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 23:23:39,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546694975] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:23:39,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:23:39,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-11-25 23:23:39,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918860681] [2022-11-25 23:23:39,135 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:23:39,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 23:23:39,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:23:39,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 23:23:39,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:23:39,138 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:23:39,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:23:39,762 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-25 23:23:39,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 23:23:39,763 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-25 23:23:39,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:23:39,764 INFO L225 Difference]: With dead ends: 16 [2022-11-25 23:23:39,764 INFO L226 Difference]: Without dead ends: 14 [2022-11-25 23:23:39,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:23:39,766 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:23:39,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 19 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:23:39,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-25 23:23:39,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-25 23:23:39,770 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 23:23:39,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-25 23:23:39,774 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-25 23:23:39,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:23:39,775 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-25 23:23:39,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:23:39,775 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-25 23:23:39,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 23:23:39,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:23:39,777 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 23:23:39,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/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 23:23:40,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:23:40,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-25 23:23:40,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 23:23:40,396 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:23:40,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:23:40,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-25 23:23:40,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:23:40,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676775137] [2022-11-25 23:23:40,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 23:23:40,405 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 23:23:40,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:23:40,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/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 23:23:40,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d004066a-531a-4ee0-97ad-65a762381f2b/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 23:23:42,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 23:23:42,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 23:23:42,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 3450 conjuncts, 351 conjunts are in the unsatisfiable core [2022-11-25 23:23:42,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:23:46,709 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 23:23:46,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:26:10,398 WARN L233 SmtUtils]: Spent 2.32m on a formula simplification. DAG size of input: 524 DAG size of output: 494 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)