./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI --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 11bdfd1da401170ec2c31632798533526859896c0f37a65c8b3581cc72b98ebd --- 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-5e519f3 [2022-11-03 02:37:47,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:37:47,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:37:47,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:37:47,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:37:47,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:37:47,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:37:47,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:37:47,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:37:47,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:37:47,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:37:47,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:37:47,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:37:47,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:37:47,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:37:47,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:37:47,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:37:47,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:37:47,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:37:47,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:37:47,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:37:47,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:37:47,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:37:47,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:37:47,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:37:47,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:37:47,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:37:47,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:37:47,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:37:47,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:37:47,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:37:47,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:37:47,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:37:47,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:37:47,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:37:47,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:37:47,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:37:47,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:37:47,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:37:47,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:37:47,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:37:47,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:37:47,355 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:37:47,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:37:47,356 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:37:47,357 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:37:47,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:37:47,372 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:37:47,372 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:37:47,373 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:37:47,373 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:37:47,373 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:37:47,375 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:37:47,375 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:37:47,375 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:37:47,376 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:37:47,376 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:37:47,376 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:37:47,377 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:37:47,377 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:37:47,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:37:47,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:37:47,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:37:47,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:37:47,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:37:47,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:37:47,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:37:47,380 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:37:47,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:37:47,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:37:47,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:37:47,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:37:47,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:37:47,384 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:37:47,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:37:47,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:37:47,385 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:37:47,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:37:47,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:37:47,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:37:47,386 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_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11bdfd1da401170ec2c31632798533526859896c0f37a65c8b3581cc72b98ebd [2022-11-03 02:37:47,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:37:47,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:37:47,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:37:47,857 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:37:47,858 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:37:47,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c [2022-11-03 02:37:47,940 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/data/81be77774/5189ee3885474206ae85844e8e718eab/FLAG46f4a888e [2022-11-03 02:37:48,524 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:37:48,524 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c [2022-11-03 02:37:48,533 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/data/81be77774/5189ee3885474206ae85844e8e718eab/FLAG46f4a888e [2022-11-03 02:37:48,846 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/data/81be77774/5189ee3885474206ae85844e8e718eab [2022-11-03 02:37:48,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:37:48,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:37:48,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:37:48,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:37:48,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:37:48,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:37:48" (1/1) ... [2022-11-03 02:37:48,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f5cd322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:48, skipping insertion in model container [2022-11-03 02:37:48,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:37:48" (1/1) ... [2022-11-03 02:37:48,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:37:48,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:37:49,125 WARN L230 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_35796896-aa1c-4073-b431-facf4ac4f3eb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c[1107,1120] [2022-11-03 02:37:49,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:37:49,183 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:37:49,198 WARN L230 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_35796896-aa1c-4073-b431-facf4ac4f3eb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c[1107,1120] [2022-11-03 02:37:49,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:37:49,236 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:37:49,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:49 WrapperNode [2022-11-03 02:37:49,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:37:49,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:37:49,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:37:49,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:37:49,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:49" (1/1) ... [2022-11-03 02:37:49,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:49" (1/1) ... [2022-11-03 02:37:49,289 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 106 [2022-11-03 02:37:49,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:37:49,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:37:49,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:37:49,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:37:49,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:49" (1/1) ... [2022-11-03 02:37:49,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:49" (1/1) ... [2022-11-03 02:37:49,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:49" (1/1) ... [2022-11-03 02:37:49,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:49" (1/1) ... [2022-11-03 02:37:49,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:49" (1/1) ... [2022-11-03 02:37:49,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:49" (1/1) ... [2022-11-03 02:37:49,325 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:49" (1/1) ... [2022-11-03 02:37:49,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:49" (1/1) ... [2022-11-03 02:37:49,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:37:49,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:37:49,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:37:49,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:37:49,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:49" (1/1) ... [2022-11-03 02:37:49,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:37:49,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:49,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:37:49,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:37:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:37:49,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:37:49,532 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:37:49,535 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:37:49,775 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:37:49,831 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:37:49,831 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:37:49,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:49 BoogieIcfgContainer [2022-11-03 02:37:49,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:37:49,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:37:49,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:37:49,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:37:49,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:37:48" (1/3) ... [2022-11-03 02:37:49,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9ae57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:37:49, skipping insertion in model container [2022-11-03 02:37:49,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:49" (2/3) ... [2022-11-03 02:37:49,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9ae57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:37:49, skipping insertion in model container [2022-11-03 02:37:49,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:49" (3/3) ... [2022-11-03 02:37:49,846 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pipeline.c [2022-11-03 02:37:49,870 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:37:49,870 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:37:49,932 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:37:49,941 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;@4f023e6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:37:49,941 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:37:49,947 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) [2022-11-03 02:37:49,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:37:49,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:49,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:37:49,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:49,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:49,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2035816, now seen corresponding path program 1 times [2022-11-03 02:37:49,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:49,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869739475] [2022-11-03 02:37:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:49,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:37:50,388 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:37:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:37:50,512 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:37:50,515 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:37:50,517 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:37:50,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:37:50,525 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 02:37:50,530 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:37:50,550 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:37:50,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:37:50 BoogieIcfgContainer [2022-11-03 02:37:50,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:37:50,560 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:37:50,560 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:37:50,560 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:37:50,561 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:49" (3/4) ... [2022-11-03 02:37:50,566 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:37:50,566 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:37:50,568 INFO L158 Benchmark]: Toolchain (without parser) took 1716.53ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 54.1MB in the beginning and 98.2MB in the end (delta: -44.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:37:50,568 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 98.6MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:37:50,569 INFO L158 Benchmark]: CACSL2BoogieTranslator took 380.42ms. Allocated memory is still 98.6MB. Free memory was 53.9MB in the beginning and 71.2MB in the end (delta: -17.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:37:50,570 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.41ms. Allocated memory is still 98.6MB. Free memory was 71.2MB in the beginning and 68.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:37:50,571 INFO L158 Benchmark]: Boogie Preprocessor took 40.18ms. Allocated memory is still 98.6MB. Free memory was 68.9MB in the beginning and 67.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:37:50,572 INFO L158 Benchmark]: RCFGBuilder took 503.66ms. Allocated memory is still 98.6MB. Free memory was 67.3MB in the beginning and 48.2MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-03 02:37:50,573 INFO L158 Benchmark]: TraceAbstraction took 722.01ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 47.5MB in the beginning and 98.2MB in the end (delta: -50.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:37:50,573 INFO L158 Benchmark]: Witness Printer took 6.37ms. Allocated memory is still 132.1MB. Free memory is still 98.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:37:50,577 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 98.6MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 380.42ms. Allocated memory is still 98.6MB. Free memory was 53.9MB in the beginning and 71.2MB in the end (delta: -17.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.41ms. Allocated memory is still 98.6MB. Free memory was 71.2MB in the beginning and 68.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.18ms. Allocated memory is still 98.6MB. Free memory was 68.9MB in the beginning and 67.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 503.66ms. Allocated memory is still 98.6MB. Free memory was 67.3MB in the beginning and 48.2MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 722.01ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 47.5MB in the beginning and 98.2MB in the end (delta: -50.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.37ms. Allocated memory is still 132.1MB. Free memory is still 98.2MB. 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 79, overapproximation of bitwiseOr at line 77, overapproximation of bitwiseAnd at line 68. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 32); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (32 - 1); [L28] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 1); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (1 - 1); [L31] const SORT_1 var_8 = 0; [L32] const SORT_4 var_21 = 1; [L34] SORT_1 input_2; [L35] SORT_1 input_3; [L36] SORT_4 input_5; [L37] SORT_1 input_6; [L38] SORT_4 input_7; [L40] SORT_1 state_9 = __VERIFIER_nondet_uint() & mask_SORT_1; [L41] SORT_1 state_11 = __VERIFIER_nondet_uint() & mask_SORT_1; [L42] SORT_1 state_13 = __VERIFIER_nondet_uint() & mask_SORT_1; [L43] SORT_1 state_26 = __VERIFIER_nondet_uint() & mask_SORT_1; [L44] SORT_1 state_28 = __VERIFIER_nondet_uint() & mask_SORT_1; [L46] SORT_1 init_10_arg_1 = var_8; [L47] state_9 = init_10_arg_1 [L48] SORT_1 init_12_arg_1 = var_8; [L49] state_11 = init_12_arg_1 [L50] SORT_1 init_14_arg_1 = var_8; [L51] state_13 = init_14_arg_1 [L52] SORT_1 init_27_arg_1 = var_8; [L53] state_26 = init_27_arg_1 [L54] SORT_1 init_29_arg_1 = var_8; [L55] state_28 = init_29_arg_1 VAL [init_10_arg_1=0, init_12_arg_1=0, init_14_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, mask_SORT_1=4294967295, mask_SORT_4=1, msb_SORT_1=2147483648, msb_SORT_4=1, state_11=0, state_13=0, state_26=0, state_28=0, state_9=0, var_21=1, var_8=0] [L58] input_2 = __VERIFIER_nondet_uint() [L59] input_3 = __VERIFIER_nondet_uint() [L60] input_5 = __VERIFIER_nondet_uchar() [L61] input_6 = __VERIFIER_nondet_uint() [L62] input_7 = __VERIFIER_nondet_uchar() [L65] SORT_1 var_15_arg_0 = state_11; [L66] SORT_1 var_15_arg_1 = state_13; [L67] SORT_1 var_15 = var_15_arg_0 + var_15_arg_1; [L68] var_15 = var_15 & mask_SORT_1 [L69] SORT_1 var_16_arg_0 = state_9; [L70] SORT_1 var_16_arg_1 = var_15; [L71] SORT_4 var_16 = var_16_arg_0 == var_16_arg_1; [L72] SORT_1 var_17_arg_0 = state_9; [L73] SORT_1 var_17_arg_1 = var_8; [L74] SORT_4 var_17 = var_17_arg_0 == var_17_arg_1; [L75] SORT_4 var_18_arg_0 = var_16; [L76] SORT_4 var_18_arg_1 = var_17; [L77] SORT_4 var_18 = var_18_arg_0 | var_18_arg_1; [L78] SORT_4 var_22_arg_0 = var_18; [L79] SORT_4 var_22 = ~var_22_arg_0; [L80] SORT_4 var_23_arg_0 = var_21; [L81] SORT_4 var_23_arg_1 = var_22; [L82] SORT_4 var_23 = var_23_arg_0 & var_23_arg_1; [L83] var_23 = var_23 & mask_SORT_4 [L84] SORT_4 bad_24_arg_0 = var_23; [L85] CALL __VERIFIER_assert(!(bad_24_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 02:37:50,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI --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 11bdfd1da401170ec2c31632798533526859896c0f37a65c8b3581cc72b98ebd --- 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-5e519f3 [2022-11-03 02:37:53,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:37:53,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:37:53,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:37:53,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:37:53,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:37:53,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:37:53,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:37:53,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:37:53,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:37:53,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:37:53,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:37:53,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:37:53,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:37:53,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:37:53,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:37:53,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:37:53,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:37:53,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:37:53,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:37:53,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:37:53,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:37:53,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:37:53,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:37:53,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:37:53,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:37:53,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:37:53,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:37:53,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:37:53,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:37:53,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:37:53,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:37:53,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:37:53,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:37:53,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:37:53,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:37:53,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:37:53,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:37:53,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:37:53,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:37:53,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:37:53,542 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:37:53,593 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:37:53,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:37:53,600 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:37:53,600 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:37:53,601 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:37:53,602 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:37:53,602 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:37:53,603 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:37:53,603 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:37:53,603 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:37:53,605 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:37:53,605 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:37:53,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:37:53,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:37:53,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:37:53,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:37:53,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:37:53,609 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:37:53,609 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:37:53,610 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:37:53,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:37:53,611 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:37:53,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:37:53,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:37:53,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:37:53,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:37:53,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:37:53,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:37:53,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:37:53,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:37:53,614 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:37:53,614 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:37:53,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:37:53,615 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:37:53,616 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:37:53,616 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_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11bdfd1da401170ec2c31632798533526859896c0f37a65c8b3581cc72b98ebd [2022-11-03 02:37:54,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:37:54,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:37:54,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:37:54,160 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:37:54,164 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:37:54,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c [2022-11-03 02:37:54,250 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/data/6dec7a039/eea88e60c5814bd39b9aeaf8ff18ca8e/FLAG7a32b951a [2022-11-03 02:37:54,895 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:37:54,895 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c [2022-11-03 02:37:54,911 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/data/6dec7a039/eea88e60c5814bd39b9aeaf8ff18ca8e/FLAG7a32b951a [2022-11-03 02:37:55,281 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/data/6dec7a039/eea88e60c5814bd39b9aeaf8ff18ca8e [2022-11-03 02:37:55,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:37:55,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:37:55,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:37:55,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:37:55,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:37:55,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:37:55" (1/1) ... [2022-11-03 02:37:55,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d8d6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:55, skipping insertion in model container [2022-11-03 02:37:55,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:37:55" (1/1) ... [2022-11-03 02:37:55,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:37:55,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:37:55,565 WARN L230 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_35796896-aa1c-4073-b431-facf4ac4f3eb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c[1107,1120] [2022-11-03 02:37:55,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:37:55,654 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:37:55,670 WARN L230 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_35796896-aa1c-4073-b431-facf4ac4f3eb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c[1107,1120] [2022-11-03 02:37:55,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:37:55,759 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:37:55,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:55 WrapperNode [2022-11-03 02:37:55,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:37:55,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:37:55,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:37:55,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:37:55,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:55" (1/1) ... [2022-11-03 02:37:55,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:55" (1/1) ... [2022-11-03 02:37:55,808 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 106 [2022-11-03 02:37:55,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:37:55,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:37:55,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:37:55,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:37:55,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:55" (1/1) ... [2022-11-03 02:37:55,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:55" (1/1) ... [2022-11-03 02:37:55,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:55" (1/1) ... [2022-11-03 02:37:55,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:55" (1/1) ... [2022-11-03 02:37:55,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:55" (1/1) ... [2022-11-03 02:37:55,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:55" (1/1) ... [2022-11-03 02:37:55,838 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:55" (1/1) ... [2022-11-03 02:37:55,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:55" (1/1) ... [2022-11-03 02:37:55,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:37:55,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:37:55,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:37:55,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:37:55,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:55" (1/1) ... [2022-11-03 02:37:55,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:37:55,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:55,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:37:55,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:37:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:37:55,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:37:56,080 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:37:56,081 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:37:56,281 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:37:56,289 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:37:56,289 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:37:56,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:56 BoogieIcfgContainer [2022-11-03 02:37:56,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:37:56,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:37:56,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:37:56,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:37:56,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:37:55" (1/3) ... [2022-11-03 02:37:56,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2fab1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:37:56, skipping insertion in model container [2022-11-03 02:37:56,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:55" (2/3) ... [2022-11-03 02:37:56,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2fab1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:37:56, skipping insertion in model container [2022-11-03 02:37:56,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:56" (3/3) ... [2022-11-03 02:37:56,320 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pipeline.c [2022-11-03 02:37:56,341 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:37:56,341 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:37:56,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:37:56,431 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;@1a5de61f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:37:56,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:37:56,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-11-03 02:37:56,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 02:37:56,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:56,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 02:37:56,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:56,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:56,453 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-03 02:37:56,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:37:56,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573678113] [2022-11-03 02:37:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:56,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:37:56,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:37:56,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:37:56,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:37:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:56,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:37:56,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:56,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:37:56,962 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:37:56,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573678113] [2022-11-03 02:37:56,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573678113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:56,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:56,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:37:56,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087046043] [2022-11-03 02:37:56,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:56,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:37:56,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:37:57,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:37:57,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:37:57,012 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-11-03 02:37:57,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:57,101 INFO L93 Difference]: Finished difference Result 26 states and 39 transitions. [2022-11-03 02:37:57,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:37:57,105 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 [2022-11-03 02:37:57,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:57,115 INFO L225 Difference]: With dead ends: 26 [2022-11-03 02:37:57,115 INFO L226 Difference]: Without dead ends: 15 [2022-11-03 02:37:57,119 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 [2022-11-03 02:37:57,123 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:57,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 21 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:37:57,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-03 02:37:57,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 11. [2022-11-03 02:37:57,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 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) [2022-11-03 02:37:57,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-03 02:37:57,165 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2022-11-03 02:37:57,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:57,165 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-03 02:37:57,166 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) [2022-11-03 02:37:57,166 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-03 02:37:57,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 02:37:57,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:57,167 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:57,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 02:37:57,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:37:57,382 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:57,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:57,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1478823361, now seen corresponding path program 1 times [2022-11-03 02:37:57,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:37:57,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399167762] [2022-11-03 02:37:57,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:57,386 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:37:57,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:37:57,388 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:37:57,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:37:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:57,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 02:37:57,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:57,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:58,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:58,638 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:37:58,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399167762] [2022-11-03 02:37:58,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399167762] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:58,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1241792556] [2022-11-03 02:37:58,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:58,640 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:37:58,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:37:58,647 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:37:58,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-03 02:37:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:58,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 02:37:58,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:59,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:59,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1241792556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:59,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885188551] [2022-11-03 02:37:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:59,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:59,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:59,292 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:37:59,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:37:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:59,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-03 02:37:59,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:59,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:00,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885188551] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:00,012 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:38:00,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 8, 8] total 14 [2022-11-03 02:38:00,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112046] [2022-11-03 02:38:00,014 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:38:00,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:38:00,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:38:00,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:38:00,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:38:00,017 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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) [2022-11-03 02:38:00,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:00,293 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-11-03 02:38:00,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:38:00,294 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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 10 [2022-11-03 02:38:00,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:00,295 INFO L225 Difference]: With dead ends: 23 [2022-11-03 02:38:00,295 INFO L226 Difference]: Without dead ends: 21 [2022-11-03 02:38:00,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:38:00,297 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:00,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 37 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 48 Unchecked, 0.1s Time] [2022-11-03 02:38:00,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-03 02:38:00,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2022-11-03 02:38:00,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 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) [2022-11-03 02:38:00,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-11-03 02:38:00,304 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2022-11-03 02:38:00,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:00,305 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-11-03 02:38:00,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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) [2022-11-03 02:38:00,306 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-11-03 02:38:00,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 02:38:00,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:00,307 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:00,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:00,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:00,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:00,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:00,917 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:00,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:00,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1476976319, now seen corresponding path program 1 times [2022-11-03 02:38:00,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:38:00,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785544661] [2022-11-03 02:38:00,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:00,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:38:00,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:38:00,924 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:38:00,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:38:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:01,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:38:01,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:01,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:01,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:01,644 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:38:01,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785544661] [2022-11-03 02:38:01,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785544661] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:01,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2050250672] [2022-11-03 02:38:01,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:01,645 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:38:01,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:38:01,649 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:38:01,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-03 02:38:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:01,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:38:01,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:01,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:01,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:02,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2050250672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:02,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390242159] [2022-11-03 02:38:02,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:02,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:02,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:02,077 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:02,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:38:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:02,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:38:02,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:02,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:02,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:02,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390242159] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:02,581 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:38:02,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 8, 8] total 14 [2022-11-03 02:38:02,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649825726] [2022-11-03 02:38:02,582 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:38:02,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:38:02,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:38:02,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:38:02,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:38:02,584 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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) [2022-11-03 02:38:02,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:02,834 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-11-03 02:38:02,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:38:02,835 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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 10 [2022-11-03 02:38:02,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:02,836 INFO L225 Difference]: With dead ends: 21 [2022-11-03 02:38:02,836 INFO L226 Difference]: Without dead ends: 19 [2022-11-03 02:38:02,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:38:02,838 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:02,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 20 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 29 Unchecked, 0.1s Time] [2022-11-03 02:38:02,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-03 02:38:02,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2022-11-03 02:38:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 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) [2022-11-03 02:38:02,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-11-03 02:38:02,845 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2022-11-03 02:38:02,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:02,845 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-11-03 02:38:02,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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) [2022-11-03 02:38:02,846 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-11-03 02:38:02,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 02:38:02,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:02,847 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-03 02:38:02,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:03,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:03,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:03,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:38:03,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:03,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:03,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1559918007, now seen corresponding path program 2 times [2022-11-03 02:38:03,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:38:03,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424017056] [2022-11-03 02:38:03,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:38:03,451 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:38:03,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:38:03,458 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:38:03,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:38:03,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:38:03,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:38:03,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:38:03,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:03,953 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:03,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:04,610 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 02:38:04,611 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:38:04,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424017056] [2022-11-03 02:38:04,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424017056] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:04,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [362526728] [2022-11-03 02:38:04,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:38:04,614 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:38:04,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:38:04,616 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:38:04,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-03 02:38:04,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:38:04,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:38:04,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:38:04,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:05,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 02:38:05,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [362526728] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:05,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575824111] [2022-11-03 02:38:05,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:38:05,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:05,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:05,288 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:05,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 02:38:05,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:38:05,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:38:05,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-03 02:38:05,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:05,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:38:05,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575824111] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:05,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:38:05,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 9, 8] total 15 [2022-11-03 02:38:05,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154026251] [2022-11-03 02:38:05,963 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:38:05,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 02:38:05,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:38:05,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 02:38:05,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:38:05,965 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:07,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:07,508 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2022-11-03 02:38:07,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 02:38:07,508 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-03 02:38:07,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:07,509 INFO L225 Difference]: With dead ends: 43 [2022-11-03 02:38:07,509 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 02:38:07,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 75 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 02:38:07,511 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 32 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:07,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 23 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 61 Unchecked, 0.1s Time] [2022-11-03 02:38:07,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 02:38:07,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 02:38:07,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-03 02:38:07,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 02:38:07,514 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-11-03 02:38:07,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:07,514 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 02:38:07,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:07,515 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 02:38:07,515 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 02:38:07,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:38:07,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:07,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:07,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:08,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:38:08,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 02:38:08,524 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 02:38:08,524 INFO L895 garLoopResultBuilder]: At program point L56-2(lines 56 115) the Hoare annotation is: (let ((.cse2 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) (.cse3 (= |ULTIMATE.start_main_~var_32_arg_2~0#1| |ULTIMATE.start_main_~var_8~0#1|)) (.cse0 (= |ULTIMATE.start_main_~var_8~0#1| (_ bv0 32))) (.cse1 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_4~0#1|))) (or (and (= |ULTIMATE.start_main_~state_9~0#1| |ULTIMATE.start_main_~var_8~0#1|) (= |ULTIMATE.start_main_~var_8~0#1| |ULTIMATE.start_main_~state_26~0#1|) (= |ULTIMATE.start_main_~var_8~0#1| |ULTIMATE.start_main_~state_28~0#1|) .cse0 (= (bvadd |ULTIMATE.start_main_~mask_SORT_1~0#1| (_ bv1 32)) (_ bv0 32)) .cse1) (and .cse2 .cse3 .cse0 (exists ((|ULTIMATE.start_main_~mask_SORT_1~0#1| (_ BitVec 32))) (= (bvand (bvmul (_ bv2 32) |ULTIMATE.start_main_~var_8~0#1|) |ULTIMATE.start_main_~mask_SORT_1~0#1|) |ULTIMATE.start_main_~state_9~0#1|)) .cse1) (and .cse2 .cse3 .cse0 (= |ULTIMATE.start_main_~state_9~0#1| (bvand (bvadd |ULTIMATE.start_main_~state_13~0#1| |ULTIMATE.start_main_~state_11~0#1|) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) .cse1))) [2022-11-03 02:38:08,525 INFO L899 garLoopResultBuilder]: For program point L56-3(lines 56 115) no Hoare annotation was computed. [2022-11-03 02:38:08,525 INFO L895 garLoopResultBuilder]: At program point L116(lines 22 117) the Hoare annotation is: false [2022-11-03 02:38:08,525 INFO L899 garLoopResultBuilder]: For program point L96(line 96) no Hoare annotation was computed. [2022-11-03 02:38:08,525 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-03 02:38:08,526 INFO L899 garLoopResultBuilder]: For program point L96-2(line 96) no Hoare annotation was computed. [2022-11-03 02:38:08,526 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 02:38:08,526 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-03 02:38:08,526 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-03 02:38:08,526 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-03 02:38:08,527 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-03 02:38:08,527 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-03 02:38:08,531 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-11-03 02:38:08,533 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:38:08,542 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~mask_SORT_1~0#1,QUANTIFIED] [2022-11-03 02:38:08,549 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~mask_SORT_1~0#1,QUANTIFIED] [2022-11-03 02:38:08,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:38:08 BoogieIcfgContainer [2022-11-03 02:38:08,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:38:08,552 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:38:08,552 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:38:08,552 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:38:08,553 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:56" (3/4) ... [2022-11-03 02:38:08,557 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 02:38:08,570 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-03 02:38:08,570 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-03 02:38:08,570 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 02:38:08,602 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((state_9 == var_8 && var_8 == state_26) && var_8 == state_28) && var_8 == 0bv32) && ~bvadd64(mask_SORT_1, 1bv32) == 0bv32) && 1bv8 == mask_SORT_4) || ((((cond == 1bv32 && var_32_arg_2 == var_8) && var_8 == 0bv32) && (\exists ULTIMATE.start_main_~mask_SORT_1~0#1 : bv32 :: ~bvand32(~bvmul64(2bv32, var_8), ULTIMATE.start_main_~mask_SORT_1~0#1) == state_9)) && 1bv8 == mask_SORT_4)) || ((((cond == 1bv32 && var_32_arg_2 == var_8) && var_8 == 0bv32) && state_9 == ~bvand32(~bvadd64(state_13, state_11), mask_SORT_1)) && 1bv8 == mask_SORT_4) [2022-11-03 02:38:08,612 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.witnessprinter has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:59) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:1) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GeneratedWitnessEdge.getSourceCode(GeneratedWitnessEdge.java:153) at de.uni_freiburg.informatik.ultimate.witnessprinter.CorrectnessWitnessGenerator.lambda$2(CorrectnessWitnessGenerator.java:95) at edu.uci.ics.jung.io.GraphMLWriter.writeEdgeData(GraphMLWriter.java:237) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.UltimateGraphMLWriter.save(UltimateGraphMLWriter.java:106) at de.uni_freiburg.informatik.ultimate.witnessprinter.CorrectnessWitnessGenerator.makeGraphMLString(CorrectnessWitnessGenerator.java:115) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.generateProofWitness(WitnessPrinter.java:158) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.finish(WitnessPrinter.java:138) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:131) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 02:38:08,615 INFO L158 Benchmark]: Toolchain (without parser) took 13325.21ms. Allocated memory was 71.3MB in the beginning and 132.1MB in the end (delta: 60.8MB). Free memory was 51.9MB in the beginning and 56.1MB in the end (delta: -4.2MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2022-11-03 02:38:08,615 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 71.3MB. Free memory was 51.8MB in the beginning and 51.8MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:38:08,616 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.53ms. Allocated memory is still 71.3MB. Free memory was 51.7MB in the beginning and 53.4MB in the end (delta: -1.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 02:38:08,616 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.26ms. Allocated memory is still 71.3MB. Free memory was 53.2MB in the beginning and 51.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:38:08,617 INFO L158 Benchmark]: Boogie Preprocessor took 33.13ms. Allocated memory is still 71.3MB. Free memory was 51.4MB in the beginning and 50.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:38:08,617 INFO L158 Benchmark]: RCFGBuilder took 448.39ms. Allocated memory is still 71.3MB. Free memory was 50.1MB in the beginning and 38.2MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:38:08,618 INFO L158 Benchmark]: TraceAbstraction took 12256.99ms. Allocated memory was 71.3MB in the beginning and 132.1MB in the end (delta: 60.8MB). Free memory was 37.5MB in the beginning and 59.2MB in the end (delta: -21.7MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. [2022-11-03 02:38:08,619 INFO L158 Benchmark]: Witness Printer took 62.11ms. Allocated memory is still 132.1MB. Free memory was 59.2MB in the beginning and 56.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:38:08,622 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 71.3MB. Free memory was 51.8MB in the beginning and 51.8MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 466.53ms. Allocated memory is still 71.3MB. Free memory was 51.7MB in the beginning and 53.4MB in the end (delta: -1.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.26ms. Allocated memory is still 71.3MB. Free memory was 53.2MB in the beginning and 51.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.13ms. Allocated memory is still 71.3MB. Free memory was 51.4MB in the beginning and 50.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 448.39ms. Allocated memory is still 71.3MB. Free memory was 50.1MB in the beginning and 38.2MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 12256.99ms. Allocated memory was 71.3MB in the beginning and 132.1MB in the end (delta: 60.8MB). Free memory was 37.5MB in the beginning and 59.2MB in the end (delta: -21.7MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. * Witness Printer took 62.11ms. Allocated memory is still 132.1MB. Free memory was 59.2MB in the beginning and 56.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~mask_SORT_1~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~mask_SORT_1~0#1,QUANTIFIED] * 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 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.1s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 86 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 86 mSDsluCounter, 101 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 138 IncrementalHoareTripleChecker+Unchecked, 79 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89 IncrementalHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 22 mSDtfsCounter, 89 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 233 GetRequests, 157 SyntacticMatches, 8 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=2, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 11 NumberOfFragments, 64 HoareAnnotationTreeSize, 2 FomulaSimplifications, 96 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 368 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 196 ConstructedInterpolants, 75 QuantifiedInterpolants, 3765 SizeOfPredicates, 279 NumberOfNonLiveVariables, 1096 ConjunctsInSsa, 279 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 24/78 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 56]: Loop Invariant [2022-11-03 02:38:08,633 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~mask_SORT_1~0#1,QUANTIFIED] [2022-11-03 02:38:08,634 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~mask_SORT_1~0#1,QUANTIFIED] Derived loop invariant: ((((((state_9 == var_8 && var_8 == state_26) && var_8 == state_28) && var_8 == 0bv32) && ~bvadd64(mask_SORT_1, 1bv32) == 0bv32) && 1bv8 == mask_SORT_4) || ((((cond == 1bv32 && var_32_arg_2 == var_8) && var_8 == 0bv32) && (\exists ULTIMATE.start_main_~mask_SORT_1~0#1 : bv32 :: ~bvand32(~bvmul64(2bv32, var_8), ULTIMATE.start_main_~mask_SORT_1~0#1) == state_9)) && 1bv8 == mask_SORT_4)) || ((((cond == 1bv32 && var_32_arg_2 == var_8) && var_8 == 0bv32) && state_9 == ~bvand32(~bvadd64(state_13, state_11), mask_SORT_1)) && 1bv8 == mask_SORT_4) * Results from de.uni_freiburg.informatik.ultimate.witnessprinter: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.witnessprinter: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:78) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 02:38:08,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35796896-aa1c-4073-b431-facf4ac4f3eb/bin/utaipan-7li7fVZpFI/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 Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null