./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba --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 eb6c73596f57c74cf3403c0ac21bba501590ba8eb1b9f6361a760495ca1fcd14 --- 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-b5237d8 [2022-11-22 02:38:56,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:38:56,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:38:56,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:38:56,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:38:56,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:38:56,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:38:56,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:38:56,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:38:56,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:38:56,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:38:56,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:38:56,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:38:56,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:38:56,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:38:56,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:38:56,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:38:56,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:38:56,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:38:56,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:38:56,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:38:56,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:38:56,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:38:56,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:38:56,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:38:56,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:38:56,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:38:56,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:38:56,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:38:56,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:38:56,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:38:56,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:38:56,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:38:56,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:38:56,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:38:56,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:38:56,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:38:56,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:38:56,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:38:56,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:38:56,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:38:56,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:38:56,532 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:38:56,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:38:56,533 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:38:56,533 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:38:56,534 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:38:56,534 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:38:56,534 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:38:56,535 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:38:56,535 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:38:56,535 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:38:56,535 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:38:56,535 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:38:56,536 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:38:56,536 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:38:56,536 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:38:56,536 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:38:56,536 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:38:56,537 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:38:56,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:38:56,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:38:56,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:38:56,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:38:56,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:38:56,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:38:56,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:38:56,539 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:38:56,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:38:56,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:38:56,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:38:56,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:38:56,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:38:56,540 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:38:56,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:38:56,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:38:56,541 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:38:56,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:38:56,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:38:56,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:38:56,541 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_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb6c73596f57c74cf3403c0ac21bba501590ba8eb1b9f6361a760495ca1fcd14 [2022-11-22 02:38:56,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:38:56,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:38:56,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:38:56,842 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:38:56,843 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:38:56,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c [2022-11-22 02:38:59,938 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:39:00,171 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:39:00,171 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c [2022-11-22 02:39:00,204 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/data/d2c21ff38/32e10a3797744b56bc96032a76fedda0/FLAG4829d49fd [2022-11-22 02:39:00,221 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/data/d2c21ff38/32e10a3797744b56bc96032a76fedda0 [2022-11-22 02:39:00,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:39:00,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:39:00,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:39:00,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:39:00,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:39:00,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:39:00" (1/1) ... [2022-11-22 02:39:00,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d3a02c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:00, skipping insertion in model container [2022-11-22 02:39:00,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:39:00" (1/1) ... [2022-11-22 02:39:00,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:39:00,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:39:00,474 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c[1014,1027] [2022-11-22 02:39:00,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:39:00,790 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:39:00,808 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c[1014,1027] [2022-11-22 02:39:00,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:39:01,013 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:39:01,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:01 WrapperNode [2022-11-22 02:39:01,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:39:01,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:39:01,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:39:01,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:39:01,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:01" (1/1) ... [2022-11-22 02:39:01,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:01" (1/1) ... [2022-11-22 02:39:01,169 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1106 [2022-11-22 02:39:01,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:39:01,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:39:01,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:39:01,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:39:01,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:01" (1/1) ... [2022-11-22 02:39:01,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:01" (1/1) ... [2022-11-22 02:39:01,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:01" (1/1) ... [2022-11-22 02:39:01,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:01" (1/1) ... [2022-11-22 02:39:01,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:01" (1/1) ... [2022-11-22 02:39:01,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:01" (1/1) ... [2022-11-22 02:39:01,276 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:01" (1/1) ... [2022-11-22 02:39:01,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:01" (1/1) ... [2022-11-22 02:39:01,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:39:01,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:39:01,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:39:01,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:39:01,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:01" (1/1) ... [2022-11-22 02:39:01,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:39:01,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:39:01,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:39:01,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:39:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:39:01,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:39:01,731 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:39:01,748 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:39:59,919 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:39:59,944 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:39:59,944 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:39:59,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:39:59 BoogieIcfgContainer [2022-11-22 02:39:59,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:39:59,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:39:59,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:39:59,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:39:59,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:39:00" (1/3) ... [2022-11-22 02:39:59,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c97c374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:39:59, skipping insertion in model container [2022-11-22 02:39:59,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:01" (2/3) ... [2022-11-22 02:39:59,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c97c374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:39:59, skipping insertion in model container [2022-11-22 02:39:59,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:39:59" (3/3) ... [2022-11-22 02:39:59,956 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.fischer.1.prop1-func-interl.c [2022-11-22 02:39:59,975 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:39:59,975 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:40:00,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:40:00,029 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;@ee35b17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:40:00,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:40:00,033 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) [2022-11-22 02:40:00,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 02:40:00,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:00,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 02:40:00,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:00,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:00,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-22 02:40:00,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:00,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795292378] [2022-11-22 02:40:00,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:00,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:40:00,326 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 02:40:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:40:00,485 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 02:40:00,487 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 02:40:00,488 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 02:40:00,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:40:00,495 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-22 02:40:00,499 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:40:00,526 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:40:00,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:40:00 BoogieIcfgContainer [2022-11-22 02:40:00,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:40:00,537 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:40:00,538 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:40:00,538 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:40:00,538 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:39:59" (3/4) ... [2022-11-22 02:40:00,542 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-22 02:40:00,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:40:00,544 INFO L158 Benchmark]: Toolchain (without parser) took 60308.04ms. Allocated memory was 134.2MB in the beginning and 903.9MB in the end (delta: 769.7MB). Free memory was 88.9MB in the beginning and 499.3MB in the end (delta: -410.4MB). Peak memory consumption was 360.3MB. Max. memory is 16.1GB. [2022-11-22 02:40:00,544 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 134.2MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:40:00,545 INFO L158 Benchmark]: CACSL2BoogieTranslator took 775.37ms. Allocated memory was 134.2MB in the beginning and 163.6MB in the end (delta: 29.4MB). Free memory was 88.9MB in the beginning and 124.4MB in the end (delta: -35.5MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. [2022-11-22 02:40:00,546 INFO L158 Benchmark]: Boogie Procedure Inliner took 154.27ms. Allocated memory is still 163.6MB. Free memory was 124.4MB in the beginning and 110.9MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-22 02:40:00,546 INFO L158 Benchmark]: Boogie Preprocessor took 142.49ms. Allocated memory is still 163.6MB. Free memory was 110.9MB in the beginning and 103.3MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-22 02:40:00,547 INFO L158 Benchmark]: RCFGBuilder took 58633.84ms. Allocated memory was 163.6MB in the beginning and 903.9MB in the end (delta: 740.3MB). Free memory was 103.3MB in the beginning and 537.0MB in the end (delta: -433.7MB). Peak memory consumption was 531.9MB. Max. memory is 16.1GB. [2022-11-22 02:40:00,547 INFO L158 Benchmark]: TraceAbstraction took 588.21ms. Allocated memory is still 903.9MB. Free memory was 537.0MB in the beginning and 499.3MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-22 02:40:00,548 INFO L158 Benchmark]: Witness Printer took 5.23ms. Allocated memory is still 903.9MB. Free memory is still 499.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:40:00,551 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 134.2MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 775.37ms. Allocated memory was 134.2MB in the beginning and 163.6MB in the end (delta: 29.4MB). Free memory was 88.9MB in the beginning and 124.4MB in the end (delta: -35.5MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 154.27ms. Allocated memory is still 163.6MB. Free memory was 124.4MB in the beginning and 110.9MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 142.49ms. Allocated memory is still 163.6MB. Free memory was 110.9MB in the beginning and 103.3MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 58633.84ms. Allocated memory was 163.6MB in the beginning and 903.9MB in the end (delta: 740.3MB). Free memory was 103.3MB in the beginning and 537.0MB in the end (delta: -433.7MB). Peak memory consumption was 531.9MB. Max. memory is 16.1GB. * TraceAbstraction took 588.21ms. Allocated memory is still 903.9MB. Free memory was 537.0MB in the beginning and 499.3MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 5.23ms. Allocated memory is still 903.9MB. Free memory is still 499.3MB. 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 182, overapproximation of bitwiseAnd at line 127. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_14 = 0; [L39] const SORT_4 var_43 = 1; [L40] const SORT_4 var_44 = 0; [L41] const SORT_2 var_54 = 0; [L42] const SORT_2 var_56 = 3; [L43] const SORT_2 var_59 = 2; [L44] const SORT_2 var_62 = 1; [L45] const SORT_2 var_70 = 255; [L46] const SORT_3 var_74 = 0; [L47] const SORT_4 var_78 = 255; [L49] SORT_1 input_53; [L50] SORT_1 input_55; [L51] SORT_1 input_57; [L52] SORT_1 input_58; [L53] SORT_1 input_60; [L54] SORT_1 input_61; [L55] SORT_1 input_71; [L56] SORT_1 input_72; [L57] SORT_1 input_73; [L58] SORT_1 input_90; [L59] SORT_1 input_91; [L60] SORT_1 input_106; [L61] SORT_1 input_107; [L62] SORT_1 input_124; [L63] SORT_1 input_132; [L64] SORT_1 input_140; [L65] SORT_1 input_148; [L66] SORT_1 input_156; [L67] SORT_1 input_164; [L69] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] SORT_1 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_2 init_7_arg_1 = var_5; [L89] state_6 = init_7_arg_1 [L90] SORT_2 init_9_arg_1 = var_5; [L91] state_8 = init_9_arg_1 [L92] SORT_2 init_11_arg_1 = var_5; [L93] state_10 = init_11_arg_1 [L94] SORT_2 init_13_arg_1 = var_5; [L95] state_12 = init_13_arg_1 [L96] SORT_1 init_16_arg_1 = var_14; [L97] state_15 = init_16_arg_1 [L98] SORT_1 init_18_arg_1 = var_14; [L99] state_17 = init_18_arg_1 [L100] SORT_1 init_20_arg_1 = var_14; [L101] state_19 = init_20_arg_1 [L102] SORT_1 init_22_arg_1 = var_14; [L103] state_21 = init_22_arg_1 [L104] SORT_1 init_24_arg_1 = var_14; [L105] state_23 = init_24_arg_1 [L106] SORT_1 init_26_arg_1 = var_14; [L107] state_25 = init_26_arg_1 [L108] SORT_1 init_28_arg_1 = var_14; [L109] state_27 = init_28_arg_1 [L110] SORT_1 init_30_arg_1 = var_14; [L111] state_29 = init_30_arg_1 [L112] SORT_1 init_32_arg_1 = var_14; [L113] state_31 = init_32_arg_1 [L114] SORT_1 init_34_arg_1 = var_14; [L115] state_33 = init_34_arg_1 [L116] SORT_1 init_36_arg_1 = var_14; [L117] state_35 = init_36_arg_1 [L118] SORT_1 init_38_arg_1 = var_14; [L119] state_37 = init_38_arg_1 [L120] SORT_1 init_40_arg_1 = var_14; [L121] state_39 = init_40_arg_1 [L122] SORT_1 init_42_arg_1 = var_14; [L123] state_41 = init_42_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_16_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_15=0, state_17=0, state_19=0, state_21=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_6=0, state_8=0, var_14=0, var_43=1, var_44=0, var_5=0, var_54=0, var_56=3, var_59=2, var_62=1, var_70=255, var_74=0, var_78=255] [L126] input_53 = __VERIFIER_nondet_uchar() [L127] input_53 = input_53 & mask_SORT_1 [L128] input_55 = __VERIFIER_nondet_uchar() [L129] input_55 = input_55 & mask_SORT_1 [L130] input_57 = __VERIFIER_nondet_uchar() [L131] input_57 = input_57 & mask_SORT_1 [L132] input_58 = __VERIFIER_nondet_uchar() [L133] input_58 = input_58 & mask_SORT_1 [L134] input_60 = __VERIFIER_nondet_uchar() [L135] input_60 = input_60 & mask_SORT_1 [L136] input_61 = __VERIFIER_nondet_uchar() [L137] input_61 = input_61 & mask_SORT_1 [L138] input_71 = __VERIFIER_nondet_uchar() [L139] input_71 = input_71 & mask_SORT_1 [L140] input_72 = __VERIFIER_nondet_uchar() [L141] input_72 = input_72 & mask_SORT_1 [L142] input_73 = __VERIFIER_nondet_uchar() [L143] input_73 = input_73 & mask_SORT_1 [L144] input_90 = __VERIFIER_nondet_uchar() [L145] input_90 = input_90 & mask_SORT_1 [L146] input_91 = __VERIFIER_nondet_uchar() [L147] input_91 = input_91 & mask_SORT_1 [L148] input_106 = __VERIFIER_nondet_uchar() [L149] input_106 = input_106 & mask_SORT_1 [L150] input_107 = __VERIFIER_nondet_uchar() [L151] input_107 = input_107 & mask_SORT_1 [L152] input_124 = __VERIFIER_nondet_uchar() [L153] input_132 = __VERIFIER_nondet_uchar() [L154] input_140 = __VERIFIER_nondet_uchar() [L155] input_148 = __VERIFIER_nondet_uchar() [L156] input_156 = __VERIFIER_nondet_uchar() [L157] input_164 = __VERIFIER_nondet_uchar() [L160] SORT_1 var_45_arg_0 = state_23; [L161] SORT_4 var_45_arg_1 = var_43; [L162] SORT_4 var_45_arg_2 = var_44; [L163] SORT_4 var_45 = var_45_arg_0 ? var_45_arg_1 : var_45_arg_2; [L164] SORT_1 var_46_arg_0 = state_31; [L165] SORT_4 var_46_arg_1 = var_43; [L166] SORT_4 var_46_arg_2 = var_44; [L167] SORT_4 var_46 = var_46_arg_0 ? var_46_arg_1 : var_46_arg_2; [L168] SORT_4 var_47_arg_0 = var_45; [L169] SORT_4 var_47_arg_1 = var_46; [L170] SORT_4 var_47 = var_47_arg_0 + var_47_arg_1; [L171] SORT_1 var_48_arg_0 = state_39; [L172] SORT_4 var_48_arg_1 = var_43; [L173] SORT_4 var_48_arg_2 = var_44; [L174] SORT_4 var_48 = var_48_arg_0 ? var_48_arg_1 : var_48_arg_2; [L175] SORT_4 var_49_arg_0 = var_47; [L176] SORT_4 var_49_arg_1 = var_48; [L177] SORT_4 var_49 = var_49_arg_0 + var_49_arg_1; [L178] var_49 = var_49 & mask_SORT_4 [L179] SORT_4 var_50_arg_0 = var_49; [L180] SORT_4 var_50_arg_1 = var_43; [L181] SORT_1 var_50 = var_50_arg_0 <= var_50_arg_1; [L182] SORT_1 var_51_arg_0 = ~state_41; [L183] var_51_arg_0 = var_51_arg_0 & mask_SORT_1 [L184] SORT_1 var_51_arg_1 = ~var_50; [L185] var_51_arg_1 = var_51_arg_1 & mask_SORT_1 [L186] SORT_1 var_51 = var_51_arg_0 & var_51_arg_1; [L187] var_51 = var_51 & mask_SORT_1 [L188] SORT_1 bad_52_arg_0 = var_51; [L189] CALL __VERIFIER_assert(!(bad_52_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-22 02:40:00,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/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_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba --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 eb6c73596f57c74cf3403c0ac21bba501590ba8eb1b9f6361a760495ca1fcd14 --- 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-b5237d8 [2022-11-22 02:40:03,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:40:03,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:40:03,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:40:03,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:40:03,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:40:03,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:40:03,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:40:03,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:40:03,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:40:03,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:40:03,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:40:03,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:40:03,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:40:03,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:40:03,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:40:03,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:40:03,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:40:03,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:40:03,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:40:03,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:40:03,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:40:03,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:40:03,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:40:03,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:40:03,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:40:03,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:40:03,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:40:03,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:40:03,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:40:03,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:40:03,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:40:03,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:40:03,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:40:03,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:40:03,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:40:03,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:40:03,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:40:03,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:40:03,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:40:03,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:40:03,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-22 02:40:03,146 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:40:03,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:40:03,152 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:40:03,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:40:03,153 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:40:03,153 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:40:03,153 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:40:03,154 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:40:03,154 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:40:03,154 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:40:03,155 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:40:03,155 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:40:03,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:40:03,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:40:03,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:40:03,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:40:03,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:40:03,157 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 02:40:03,157 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-22 02:40:03,158 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-22 02:40:03,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:40:03,158 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:40:03,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:40:03,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:40:03,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-22 02:40:03,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:40:03,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:40:03,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:40:03,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:40:03,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:40:03,160 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-22 02:40:03,160 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-22 02:40:03,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:40:03,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:40:03,161 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-22 02:40:03,161 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_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb6c73596f57c74cf3403c0ac21bba501590ba8eb1b9f6361a760495ca1fcd14 [2022-11-22 02:40:03,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:40:03,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:40:03,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:40:03,533 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:40:03,533 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:40:03,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c [2022-11-22 02:40:06,585 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:40:06,904 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:40:06,904 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c [2022-11-22 02:40:06,916 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/data/88e9a0d8f/3be60abe8fcd4ed0860b0922c65c758a/FLAG4e997fed6 [2022-11-22 02:40:06,930 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/data/88e9a0d8f/3be60abe8fcd4ed0860b0922c65c758a [2022-11-22 02:40:06,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:40:06,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:40:06,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:40:06,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:40:06,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:40:06,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:40:06" (1/1) ... [2022-11-22 02:40:06,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fbacc0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:06, skipping insertion in model container [2022-11-22 02:40:06,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:40:06" (1/1) ... [2022-11-22 02:40:06,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:40:07,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:40:07,180 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c[1014,1027] [2022-11-22 02:40:07,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:40:07,475 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:40:07,486 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c[1014,1027] [2022-11-22 02:40:07,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:40:07,673 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:40:07,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:07 WrapperNode [2022-11-22 02:40:07,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:40:07,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:40:07,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:40:07,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:40:07,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:07" (1/1) ... [2022-11-22 02:40:07,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:07" (1/1) ... [2022-11-22 02:40:07,791 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1106 [2022-11-22 02:40:07,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:40:07,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:40:07,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:40:07,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:40:07,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:07" (1/1) ... [2022-11-22 02:40:07,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:07" (1/1) ... [2022-11-22 02:40:07,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:07" (1/1) ... [2022-11-22 02:40:07,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:07" (1/1) ... [2022-11-22 02:40:07,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:07" (1/1) ... [2022-11-22 02:40:07,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:07" (1/1) ... [2022-11-22 02:40:07,877 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:07" (1/1) ... [2022-11-22 02:40:07,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:07" (1/1) ... [2022-11-22 02:40:07,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:40:07,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:40:07,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:40:07,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:40:07,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:07" (1/1) ... [2022-11-22 02:40:07,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:40:07,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:40:07,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:40:07,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:40:07,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:40:07,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:40:08,306 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:40:08,308 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:40:09,901 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:40:09,908 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:40:09,909 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:40:09,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:40:09 BoogieIcfgContainer [2022-11-22 02:40:09,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:40:09,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:40:09,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:40:09,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:40:09,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:40:06" (1/3) ... [2022-11-22 02:40:09,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cef66e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:40:09, skipping insertion in model container [2022-11-22 02:40:09,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:07" (2/3) ... [2022-11-22 02:40:09,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cef66e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:40:09, skipping insertion in model container [2022-11-22 02:40:09,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:40:09" (3/3) ... [2022-11-22 02:40:09,920 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.fischer.1.prop1-func-interl.c [2022-11-22 02:40:09,939 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:40:09,939 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:40:09,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:40:09,992 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;@3793cab0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:40:09,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:40:09,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:10,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:40:10,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:10,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:40:10,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:10,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:10,010 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-22 02:40:10,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:40:10,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532986603] [2022-11-22 02:40:10,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:10,025 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:40:10,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:40:10,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:40:10,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-22 02:40:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:10,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-22 02:40:10,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:40:10,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:40:10,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:40:10,688 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:40:10,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532986603] [2022-11-22 02:40:10,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532986603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:10,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:10,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:40:10,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48974733] [2022-11-22 02:40:10,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:10,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:40:10,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:40:10,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:40:10,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:40:10,739 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:10,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:10,978 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-22 02:40:10,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:40:10,980 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 [2022-11-22 02:40:10,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:10,987 INFO L225 Difference]: With dead ends: 20 [2022-11-22 02:40:10,988 INFO L226 Difference]: Without dead ends: 11 [2022-11-22 02:40:10,990 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 [2022-11-22 02:40:10,994 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:10,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:40:11,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-22 02:40:11,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-22 02:40:11,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:11,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-22 02:40:11,026 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-22 02:40:11,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:11,026 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-22 02:40:11,026 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) [2022-11-22 02:40:11,027 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-22 02:40:11,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 02:40:11,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:11,027 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:11,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:40:11,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:40:11,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:11,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:11,240 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-22 02:40:11,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:40:11,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059315701] [2022-11-22 02:40:11,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:11,243 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:40:11,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:40:11,245 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:40:11,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-22 02:40:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:11,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 126 conjunts are in the unsatisfiable core [2022-11-22 02:40:12,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:40:13,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:40:13,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:40:46,811 WARN L233 SmtUtils]: Spent 29.50s on a formula simplification that was a NOOP. DAG size: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:40:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:40:47,920 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:40:47,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059315701] [2022-11-22 02:40:47,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059315701] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:40:47,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1558454838] [2022-11-22 02:40:47,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:47,921 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:40:47,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:40:47,926 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:40:47,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-22 02:40:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:48,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 121 conjunts are in the unsatisfiable core [2022-11-22 02:40:48,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:40:50,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:40:50,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:41:41,818 WARN L233 SmtUtils]: Spent 49.65s on a formula simplification. DAG size of input: 86 DAG size of output: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:42:45,664 WARN L233 SmtUtils]: Spent 58.64s on a formula simplification that was a NOOP. DAG size: 273 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:42:46,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:42:46,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1558454838] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:42:46,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969770620] [2022-11-22 02:42:46,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:42:46,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:42:46,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:42:46,954 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:42:46,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:42:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:42:47,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 124 conjunts are in the unsatisfiable core [2022-11-22 02:42:47,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:42:55,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:42:55,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:44:03,887 WARN L233 SmtUtils]: Spent 56.52s on a formula simplification that was a NOOP. DAG size: 273 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:45:10,405 WARN L233 SmtUtils]: Spent 59.60s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:45:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:45:11,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969770620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:45:11,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:45:11,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 16 [2022-11-22 02:45:11,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216205424] [2022-11-22 02:45:11,081 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:45:11,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 02:45:11,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:45:11,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 02:45:11,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=178, Unknown=9, NotChecked=0, Total=240 [2022-11-22 02:45:11,083 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 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) [2022-11-22 02:45:19,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:45:19,564 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-22 02:45:19,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:45:19,568 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 02:45:19,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:45:19,569 INFO L225 Difference]: With dead ends: 16 [2022-11-22 02:45:19,569 INFO L226 Difference]: Without dead ends: 14 [2022-11-22 02:45:19,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 292.4s TimeCoverageRelationStatistics Valid=91, Invalid=240, Unknown=11, NotChecked=0, Total=342 [2022-11-22 02:45:19,571 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 28 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:45:19,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 24 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-22 02:45:19,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-22 02:45:19,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-22 02:45:19,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:45:19,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-22 02:45:19,578 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-22 02:45:19,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:19,578 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-22 02:45:19,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 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) [2022-11-22 02:45:19,578 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-22 02:45:19,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 02:45:19,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:19,579 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-22 02:45:19,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-22 02:45:19,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-22 02:45:20,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:45:20,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:45:20,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:45:20,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:20,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-22 02:45:20,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:45:20,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971637125] [2022-11-22 02:45:20,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 02:45:20,197 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:45:20,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:45:20,198 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:45:20,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce3c903-ca6b-4d03-a29c-32ba22b44baf/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-22 02:45:21,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 02:45:21,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:45:21,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 294 conjunts are in the unsatisfiable core [2022-11-22 02:45:21,180 INFO L286 TraceCheckSpWp]: Computing forward predicates...