./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de540e539c3db6027c1fdb04fcc6cae02aafb8aa58950d31054b2b0b8391af6d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:38:20,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:38:20,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:38:20,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:38:20,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:38:20,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:38:20,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:38:20,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:38:20,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:38:20,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:38:20,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:38:20,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:38:20,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:38:20,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:38:20,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:38:20,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:38:20,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:38:20,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:38:20,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:38:20,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:38:20,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:38:20,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:38:20,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:38:20,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:38:20,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:38:20,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:38:20,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:38:20,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:38:20,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:38:20,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:38:20,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:38:20,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:38:20,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:38:20,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:38:20,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:38:20,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:38:20,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:38:20,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:38:20,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:38:20,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:38:20,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:38:20,507 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:38:20,532 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:38:20,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:38:20,533 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:38:20,533 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:38:20,534 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:38:20,534 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:38:20,534 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:38:20,534 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:38:20,534 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:38:20,535 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:38:20,535 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:38:20,535 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:38:20,535 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:38:20,535 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:38:20,536 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:38:20,536 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:38:20,536 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:38:20,536 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:38:20,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:38:20,537 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:38:20,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:38:20,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:38:20,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:38:20,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:38:20,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:38:20,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:38:20,539 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:38:20,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:38:20,539 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:38:20,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:38:20,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:38:20,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:38:20,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:38:20,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:38:20,540 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:38:20,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:38:20,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:38:20,542 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:38:20,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:38:20,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:38:20,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:38:20,542 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_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de540e539c3db6027c1fdb04fcc6cae02aafb8aa58950d31054b2b0b8391af6d [2022-11-25 23:38:20,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:38:20,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:38:20,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:38:20,833 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:38:20,834 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:38:20,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2022-11-25 23:38:23,784 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:38:24,048 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:38:24,048 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2022-11-25 23:38:24,058 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/data/20e5866d8/1a60d09578b54d5495e48de843e5a4db/FLAG835487835 [2022-11-25 23:38:24,077 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/data/20e5866d8/1a60d09578b54d5495e48de843e5a4db [2022-11-25 23:38:24,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:38:24,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:38:24,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:38:24,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:38:24,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:38:24,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:38:24" (1/1) ... [2022-11-25 23:38:24,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7294a8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:24, skipping insertion in model container [2022-11-25 23:38:24,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:38:24" (1/1) ... [2022-11-25 23:38:24,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:38:24,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:38:24,296 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_1d947fda-9305-4751-ab13-c7702958927b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2022-11-25 23:38:24,301 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_1d947fda-9305-4751-ab13-c7702958927b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2022-11-25 23:38:24,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:38:24,311 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:38:24,330 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_1d947fda-9305-4751-ab13-c7702958927b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2022-11-25 23:38:24,331 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_1d947fda-9305-4751-ab13-c7702958927b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2022-11-25 23:38:24,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:38:24,346 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:38:24,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:24 WrapperNode [2022-11-25 23:38:24,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:38:24,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:38:24,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:38:24,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:38:24,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:24" (1/1) ... [2022-11-25 23:38:24,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:24" (1/1) ... [2022-11-25 23:38:24,385 INFO L138 Inliner]: procedures = 18, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2022-11-25 23:38:24,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:38:24,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:38:24,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:38:24,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:38:24,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:24" (1/1) ... [2022-11-25 23:38:24,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:24" (1/1) ... [2022-11-25 23:38:24,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:24" (1/1) ... [2022-11-25 23:38:24,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:24" (1/1) ... [2022-11-25 23:38:24,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:24" (1/1) ... [2022-11-25 23:38:24,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:24" (1/1) ... [2022-11-25 23:38:24,423 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:24" (1/1) ... [2022-11-25 23:38:24,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:24" (1/1) ... [2022-11-25 23:38:24,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:38:24,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:38:24,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:38:24,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:38:24,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:24" (1/1) ... [2022-11-25 23:38:24,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:38:24,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:38:24,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:38:24,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:38:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:38:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:38:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:38:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-11-25 23:38:24,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-11-25 23:38:24,506 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2022-11-25 23:38:24,506 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2022-11-25 23:38:24,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-25 23:38:24,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:38:24,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:38:24,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:38:24,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:38:24,587 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:38:24,589 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:38:24,821 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:38:24,969 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:38:24,969 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 23:38:24,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:38:24 BoogieIcfgContainer [2022-11-25 23:38:24,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:38:24,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:38:24,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:38:24,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:38:24,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:38:24" (1/3) ... [2022-11-25 23:38:24,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7734c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:38:24, skipping insertion in model container [2022-11-25 23:38:24,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:24" (2/3) ... [2022-11-25 23:38:24,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7734c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:38:24, skipping insertion in model container [2022-11-25 23:38:24,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:38:24" (3/3) ... [2022-11-25 23:38:24,989 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2022-11-25 23:38:25,011 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:38:25,011 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 23:38:25,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:38:25,078 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;@126cf6a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:38:25,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 23:38:25,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 32 states have (on average 1.40625) internal successors, (45), 34 states have internal predecessors, (45), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-25 23:38:25,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-25 23:38:25,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:25,095 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:25,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:38:25,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:25,100 INFO L85 PathProgramCache]: Analyzing trace with hash 92772046, now seen corresponding path program 1 times [2022-11-25 23:38:25,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:38:25,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244565029] [2022-11-25 23:38:25,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:25,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:38:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:38:25,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:38:25,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244565029] [2022-11-25 23:38:25,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244565029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:25,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:38:25,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:38:25,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991340571] [2022-11-25 23:38:25,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:25,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:38:25,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:38:25,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:38:25,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:38:25,442 INFO L87 Difference]: Start difference. First operand has 47 states, 32 states have (on average 1.40625) internal successors, (45), 34 states have internal predecessors, (45), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 23:38:25,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:25,603 INFO L93 Difference]: Finished difference Result 89 states and 125 transitions. [2022-11-25 23:38:25,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:38:25,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-11-25 23:38:25,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:25,613 INFO L225 Difference]: With dead ends: 89 [2022-11-25 23:38:25,625 INFO L226 Difference]: Without dead ends: 53 [2022-11-25 23:38:25,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:38:25,631 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 16 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:25,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 151 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:38:25,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-25 23:38:25,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2022-11-25 23:38:25,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-25 23:38:25,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2022-11-25 23:38:25,702 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 24 [2022-11-25 23:38:25,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:25,703 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2022-11-25 23:38:25,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 23:38:25,703 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2022-11-25 23:38:25,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-25 23:38:25,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:25,706 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:25,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:38:25,706 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:38:25,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:25,707 INFO L85 PathProgramCache]: Analyzing trace with hash 291622722, now seen corresponding path program 1 times [2022-11-25 23:38:25,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:38:25,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896814560] [2022-11-25 23:38:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:25,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:38:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:38:25,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:38:25,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896814560] [2022-11-25 23:38:25,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896814560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:25,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:38:25,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:38:25,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623858684] [2022-11-25 23:38:25,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:25,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:38:25,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:38:25,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:38:25,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:38:25,836 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 23:38:25,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:25,909 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2022-11-25 23:38:25,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:38:25,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-11-25 23:38:25,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:25,913 INFO L225 Difference]: With dead ends: 49 [2022-11-25 23:38:25,913 INFO L226 Difference]: Without dead ends: 47 [2022-11-25 23:38:25,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:38:25,915 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:25,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:38:25,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-25 23:38:25,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-25 23:38:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 34 states have internal predecessors, (40), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-25 23:38:25,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2022-11-25 23:38:25,929 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 29 [2022-11-25 23:38:25,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:25,929 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2022-11-25 23:38:25,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 23:38:25,930 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2022-11-25 23:38:25,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-25 23:38:25,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:25,931 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:25,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:38:25,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:38:25,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:25,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1894378411, now seen corresponding path program 1 times [2022-11-25 23:38:25,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:38:25,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199930436] [2022-11-25 23:38:25,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:25,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:38:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:38:26,016 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:38:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:38:26,118 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:38:26,120 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:38:26,123 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-25 23:38:26,125 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-25 23:38:26,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:38:26,129 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-25 23:38:26,133 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:38:26,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:38:26 BoogieIcfgContainer [2022-11-25 23:38:26,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:38:26,164 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:38:26,165 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:38:26,165 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:38:26,165 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:38:24" (3/4) ... [2022-11-25 23:38:26,168 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:38:26,168 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:38:26,169 INFO L158 Benchmark]: Toolchain (without parser) took 2084.10ms. Allocated memory is still 195.0MB. Free memory was 162.4MB in the beginning and 148.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2022-11-25 23:38:26,169 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 146.8MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:38:26,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.96ms. Allocated memory is still 195.0MB. Free memory was 162.4MB in the beginning and 151.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 23:38:26,170 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.35ms. Allocated memory is still 195.0MB. Free memory was 151.4MB in the beginning and 149.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:38:26,171 INFO L158 Benchmark]: Boogie Preprocessor took 40.48ms. Allocated memory is still 195.0MB. Free memory was 149.9MB in the beginning and 148.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:38:26,171 INFO L158 Benchmark]: RCFGBuilder took 545.17ms. Allocated memory is still 195.0MB. Free memory was 147.9MB in the beginning and 128.4MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 23:38:26,172 INFO L158 Benchmark]: TraceAbstraction took 1188.00ms. Allocated memory is still 195.0MB. Free memory was 127.6MB in the beginning and 148.4MB in the end (delta: -20.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:38:26,172 INFO L158 Benchmark]: Witness Printer took 3.91ms. Allocated memory is still 195.0MB. Free memory is still 148.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:38:26,175 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 146.8MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.96ms. Allocated memory is still 195.0MB. Free memory was 162.4MB in the beginning and 151.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.35ms. Allocated memory is still 195.0MB. Free memory was 151.4MB in the beginning and 149.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.48ms. Allocated memory is still 195.0MB. Free memory was 149.9MB in the beginning and 148.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 545.17ms. Allocated memory is still 195.0MB. Free memory was 147.9MB in the beginning and 128.4MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1188.00ms. Allocated memory is still 195.0MB. Free memory was 127.6MB in the beginning and 148.4MB in the end (delta: -20.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.91ms. Allocated memory is still 195.0MB. Free memory is still 148.4MB. 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: 76]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 75. Possible FailurePath: [L66] float x = __VERIFIER_nondet_float(); [L67] float y = __VERIFIER_nondet_float(); [L69] CALL, EXPR isnan_float(x) VAL [\old(x)=4286578696] [L57] return x != x; [L69] RET, EXPR isnan_float(x) VAL [isnan_float(x)=1, x=4286578696] [L69] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, x=4286578696] [L69] CALL, EXPR isnan_float(y) VAL [\old(x)=4286578697] [L57] return x != x; [L69] RET, EXPR isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578696, y=4286578697] [L69] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578696, y=4286578697] [L69-L70] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) VAL [(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))=1, isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578696, y=4286578697] [L69-L70] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L72] CALL, EXPR fmax_float(x, y) [L46] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578696] [L23] __uint32_t w; VAL [\old(x)=4286578696, x=4286578696] [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; [L46] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578696, \old(y)=4286578697, __fpclassify_float(x)=0, x=4286578696, y=4286578697] [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; VAL [\old(x)=4286578696, \old(y)=4286578697, \result=4286578697, x=4286578696, y=4286578697] [L72] RET, EXPR fmax_float(x, y) [L72] float res = fmax_float(x, y); [L75] CALL, EXPR isnan_float(x) VAL [\old(x)=4286578696] [L57] return x != x; [L75] RET, EXPR isnan_float(x) VAL [isnan_float(x)=1, res=4286578697, x=4286578696, y=4286578697] [L75] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, res=4286578697, x=4286578696, y=4286578697] [L75] CALL, EXPR isnan_float(y) VAL [\old(x)=4286578697] [L57] return x != x; [L75] RET, EXPR isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=4286578697, x=4286578696, y=4286578697] [L75] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=4286578697, x=4286578696, y=4286578697] [L75] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L76] reach_error() VAL [res=4286578697, x=4286578696, y=4286578697] - UnprovableResult [Line: 82]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 47 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 250 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 140 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 110 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 54 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 23:38:26,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de540e539c3db6027c1fdb04fcc6cae02aafb8aa58950d31054b2b0b8391af6d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:38:28,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:38:28,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:38:28,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:38:28,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:38:28,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:38:28,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:38:28,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:38:28,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:38:28,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:38:28,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:38:28,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:38:28,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:38:28,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:38:28,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:38:28,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:38:28,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:38:28,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:38:28,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:38:28,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:38:28,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:38:28,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:38:28,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:38:28,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:38:28,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:38:28,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:38:28,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:38:28,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:38:28,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:38:28,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:38:28,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:38:28,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:38:28,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:38:28,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:38:28,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:38:28,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:38:28,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:38:28,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:38:28,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:38:28,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:38:28,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:38:28,522 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-25 23:38:28,546 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:38:28,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:38:28,546 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:38:28,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:38:28,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:38:28,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:38:28,548 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:38:28,548 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:38:28,548 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:38:28,548 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:38:28,549 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:38:28,549 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:38:28,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:38:28,550 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:38:28,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:38:28,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:38:28,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:38:28,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:38:28,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:38:28,551 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:38:28,551 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 23:38:28,551 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 23:38:28,551 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:38:28,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:38:28,552 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:38:28,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:38:28,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:38:28,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 23:38:28,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:38:28,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:38:28,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:38:28,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:38:28,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:38:28,554 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 23:38:28,554 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 23:38:28,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:38:28,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:38:28,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 23:38:28,554 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_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de540e539c3db6027c1fdb04fcc6cae02aafb8aa58950d31054b2b0b8391af6d [2022-11-25 23:38:28,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:38:28,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:38:28,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:38:28,897 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:38:28,898 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:38:28,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2022-11-25 23:38:32,003 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:38:32,205 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:38:32,206 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2022-11-25 23:38:32,213 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/data/98e345f13/f5e437ab083b44feaf1996042c53fe8c/FLAGcfd5825c5 [2022-11-25 23:38:32,226 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/data/98e345f13/f5e437ab083b44feaf1996042c53fe8c [2022-11-25 23:38:32,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:38:32,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:38:32,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:38:32,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:38:32,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:38:32,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:38:32" (1/1) ... [2022-11-25 23:38:32,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@752a0e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:32, skipping insertion in model container [2022-11-25 23:38:32,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:38:32" (1/1) ... [2022-11-25 23:38:32,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:38:32,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:38:32,416 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_1d947fda-9305-4751-ab13-c7702958927b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2022-11-25 23:38:32,420 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_1d947fda-9305-4751-ab13-c7702958927b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2022-11-25 23:38:32,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:38:32,434 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:38:32,455 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_1d947fda-9305-4751-ab13-c7702958927b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[1980,1993] [2022-11-25 23:38:32,456 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_1d947fda-9305-4751-ab13-c7702958927b/sv-benchmarks/c/float-newlib/float_req_bl_1251.c[2139,2152] [2022-11-25 23:38:32,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:38:32,473 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:38:32,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:32 WrapperNode [2022-11-25 23:38:32,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:38:32,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:38:32,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:38:32,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:38:32,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:32" (1/1) ... [2022-11-25 23:38:32,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:32" (1/1) ... [2022-11-25 23:38:32,525 INFO L138 Inliner]: procedures = 21, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 94 [2022-11-25 23:38:32,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:38:32,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:38:32,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:38:32,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:38:32,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:32" (1/1) ... [2022-11-25 23:38:32,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:32" (1/1) ... [2022-11-25 23:38:32,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:32" (1/1) ... [2022-11-25 23:38:32,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:32" (1/1) ... [2022-11-25 23:38:32,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:32" (1/1) ... [2022-11-25 23:38:32,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:32" (1/1) ... [2022-11-25 23:38:32,556 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:32" (1/1) ... [2022-11-25 23:38:32,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:32" (1/1) ... [2022-11-25 23:38:32,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:38:32,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:38:32,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:38:32,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:38:32,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:32" (1/1) ... [2022-11-25 23:38:32,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:38:32,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:38:32,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:38:32,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:38:32,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:38:32,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 23:38:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:38:32,639 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-11-25 23:38:32,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-11-25 23:38:32,639 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2022-11-25 23:38:32,639 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2022-11-25 23:38:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 23:38:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:38:32,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:38:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-25 23:38:32,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:38:32,730 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:38:32,732 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:38:33,055 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:38:33,060 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:38:33,061 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 23:38:33,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:38:33 BoogieIcfgContainer [2022-11-25 23:38:33,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:38:33,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:38:33,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:38:33,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:38:33,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:38:32" (1/3) ... [2022-11-25 23:38:33,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bb0f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:38:33, skipping insertion in model container [2022-11-25 23:38:33,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:38:32" (2/3) ... [2022-11-25 23:38:33,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bb0f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:38:33, skipping insertion in model container [2022-11-25 23:38:33,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:38:33" (3/3) ... [2022-11-25 23:38:33,070 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2022-11-25 23:38:33,099 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:38:33,099 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 23:38:33,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:38:33,193 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;@1f9db11d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:38:33,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 23:38:33,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 40 states have internal predecessors, (56), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-25 23:38:33,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-25 23:38:33,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:33,213 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:33,214 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:38:33,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:33,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1842866032, now seen corresponding path program 1 times [2022-11-25 23:38:33,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:38:33,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900276457] [2022-11-25 23:38:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:33,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:33,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:38:33,246 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:38:33,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 23:38:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:33,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 23:38:33,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:38:33,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:38:33,458 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:38:33,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900276457] [2022-11-25 23:38:33,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900276457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:33,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:38:33,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:38:33,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435077027] [2022-11-25 23:38:33,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:33,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 23:38:33,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:38:33,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 23:38:33,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:38:33,503 INFO L87 Difference]: Start difference. First operand has 53 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 40 states have internal predecessors, (56), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 23:38:33,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:33,529 INFO L93 Difference]: Finished difference Result 89 states and 128 transitions. [2022-11-25 23:38:33,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 23:38:33,532 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-11-25 23:38:33,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:33,540 INFO L225 Difference]: With dead ends: 89 [2022-11-25 23:38:33,540 INFO L226 Difference]: Without dead ends: 49 [2022-11-25 23:38:33,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 23:38:33,547 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:33,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:38:33,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-25 23:38:33,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-25 23:38:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 36 states have internal predecessors, (47), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-25 23:38:33,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2022-11-25 23:38:33,601 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 27 [2022-11-25 23:38:33,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:33,603 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2022-11-25 23:38:33,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 23:38:33,604 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2022-11-25 23:38:33,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 23:38:33,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:33,606 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:33,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:33,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:33,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:38:33,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:33,833 INFO L85 PathProgramCache]: Analyzing trace with hash -207460078, now seen corresponding path program 1 times [2022-11-25 23:38:33,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:38:33,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075358869] [2022-11-25 23:38:33,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:33,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:33,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:38:33,835 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:38:33,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 23:38:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:33,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:38:33,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:33,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:38:33,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:38:33,983 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:38:33,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075358869] [2022-11-25 23:38:33,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075358869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:33,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:38:33,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:38:33,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44819872] [2022-11-25 23:38:33,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:33,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:38:33,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:38:33,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:38:33,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:38:33,988 INFO L87 Difference]: Start difference. First operand 49 states and 67 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 23:38:34,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:34,041 INFO L93 Difference]: Finished difference Result 92 states and 125 transitions. [2022-11-25 23:38:34,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:38:34,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-11-25 23:38:34,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:34,044 INFO L225 Difference]: With dead ends: 92 [2022-11-25 23:38:34,044 INFO L226 Difference]: Without dead ends: 58 [2022-11-25 23:38:34,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:38:34,046 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 16 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:34,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 182 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:38:34,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-25 23:38:34,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2022-11-25 23:38:34,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 38 states have internal predecessors, (49), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-25 23:38:34,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2022-11-25 23:38:34,057 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 28 [2022-11-25 23:38:34,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:34,058 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2022-11-25 23:38:34,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 23:38:34,058 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2022-11-25 23:38:34,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-25 23:38:34,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:34,060 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:34,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:34,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:34,276 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:38:34,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:34,277 INFO L85 PathProgramCache]: Analyzing trace with hash 318152461, now seen corresponding path program 1 times [2022-11-25 23:38:34,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:38:34,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033912252] [2022-11-25 23:38:34,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:34,278 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:34,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:38:34,290 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:38:34,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 23:38:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:34,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:38:34,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:34,451 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:38:34,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:38:34,451 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:38:34,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033912252] [2022-11-25 23:38:34,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033912252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:34,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:38:34,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:38:34,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207474172] [2022-11-25 23:38:34,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:34,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:38:34,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:38:34,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:38:34,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:38:34,455 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 23:38:34,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:34,557 INFO L93 Difference]: Finished difference Result 74 states and 98 transitions. [2022-11-25 23:38:34,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:38:34,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-11-25 23:38:34,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:34,563 INFO L225 Difference]: With dead ends: 74 [2022-11-25 23:38:34,563 INFO L226 Difference]: Without dead ends: 54 [2022-11-25 23:38:34,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:38:34,565 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:34,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 189 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:38:34,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-25 23:38:34,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-11-25 23:38:34,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-25 23:38:34,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2022-11-25 23:38:34,578 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 33 [2022-11-25 23:38:34,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:34,579 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2022-11-25 23:38:34,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 23:38:34,579 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2022-11-25 23:38:34,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-25 23:38:34,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:34,581 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:34,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:34,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:34,794 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:38:34,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:34,795 INFO L85 PathProgramCache]: Analyzing trace with hash 810873816, now seen corresponding path program 1 times [2022-11-25 23:38:34,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:38:34,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445264060] [2022-11-25 23:38:34,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:34,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:34,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:38:34,798 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:38:34,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 23:38:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:34,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:38:34,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:34,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:38:34,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:38:34,928 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:38:34,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445264060] [2022-11-25 23:38:34,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445264060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:34,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:38:34,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:38:34,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703817303] [2022-11-25 23:38:34,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:34,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:38:34,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:38:34,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:38:34,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:38:34,931 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 23:38:34,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:34,975 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2022-11-25 23:38:34,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:38:34,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-11-25 23:38:34,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:34,977 INFO L225 Difference]: With dead ends: 77 [2022-11-25 23:38:34,977 INFO L226 Difference]: Without dead ends: 57 [2022-11-25 23:38:34,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:38:34,979 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:34,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:38:34,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-25 23:38:34,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-11-25 23:38:34,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-25 23:38:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2022-11-25 23:38:34,988 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 34 [2022-11-25 23:38:34,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:34,989 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2022-11-25 23:38:34,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 23:38:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2022-11-25 23:38:34,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-25 23:38:34,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:34,995 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:35,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:35,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:35,208 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:38:35,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:35,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2026721905, now seen corresponding path program 1 times [2022-11-25 23:38:35,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:38:35,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937277533] [2022-11-25 23:38:35,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:35,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:35,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:38:35,211 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:38:35,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 23:38:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:35,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:38:35,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:38:35,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:38:35,312 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:38:35,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937277533] [2022-11-25 23:38:35,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [937277533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:35,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:38:35,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:38:35,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954908554] [2022-11-25 23:38:35,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:35,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:38:35,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:38:35,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:38:35,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:38:35,318 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 23:38:35,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:35,394 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2022-11-25 23:38:35,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:38:35,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-11-25 23:38:35,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:35,396 INFO L225 Difference]: With dead ends: 77 [2022-11-25 23:38:35,396 INFO L226 Difference]: Without dead ends: 57 [2022-11-25 23:38:35,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:38:35,398 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:35,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:38:35,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-25 23:38:35,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-11-25 23:38:35,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-25 23:38:35,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2022-11-25 23:38:35,407 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 35 [2022-11-25 23:38:35,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:35,408 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2022-11-25 23:38:35,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 23:38:35,408 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2022-11-25 23:38:35,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-25 23:38:35,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:35,410 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:35,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:35,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:35,623 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:38:35,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:35,624 INFO L85 PathProgramCache]: Analyzing trace with hash -110305028, now seen corresponding path program 1 times [2022-11-25 23:38:35,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:38:35,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291934994] [2022-11-25 23:38:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:35,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:35,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:38:35,629 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:38:35,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-25 23:38:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:35,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:38:35,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:35,726 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:38:35,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:38:35,727 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:38:35,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291934994] [2022-11-25 23:38:35,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291934994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:35,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:38:35,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:38:35,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690305255] [2022-11-25 23:38:35,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:35,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:38:35,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:38:35,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:38:35,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:38:35,730 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 23:38:35,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:35,801 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2022-11-25 23:38:35,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:38:35,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2022-11-25 23:38:35,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:35,805 INFO L225 Difference]: With dead ends: 77 [2022-11-25 23:38:35,807 INFO L226 Difference]: Without dead ends: 57 [2022-11-25 23:38:35,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:38:35,809 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:35,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:38:35,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-25 23:38:35,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-11-25 23:38:35,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-25 23:38:35,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2022-11-25 23:38:35,826 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 36 [2022-11-25 23:38:35,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:35,826 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2022-11-25 23:38:35,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 23:38:35,827 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2022-11-25 23:38:35,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-25 23:38:35,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:35,828 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:35,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:36,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:36,041 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:38:36,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:36,042 INFO L85 PathProgramCache]: Analyzing trace with hash -403708035, now seen corresponding path program 1 times [2022-11-25 23:38:36,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:38:36,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627569979] [2022-11-25 23:38:36,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:36,043 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:36,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:38:36,050 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:38:36,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-25 23:38:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:36,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 23:38:36,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:36,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 23:38:36,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:38:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 23:38:36,855 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:38:36,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627569979] [2022-11-25 23:38:36,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627569979] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:38:36,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [207298736] [2022-11-25 23:38:36,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:36,857 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:38:36,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:38:36,866 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:38:36,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-25 23:38:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:37,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:38:37,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:37,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:38:37,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:38:37,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [207298736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:37,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:38:37,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 9] total 14 [2022-11-25 23:38:37,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124186239] [2022-11-25 23:38:37,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:37,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:38:37,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:38:37,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:38:37,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-25 23:38:37,054 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 23:38:37,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:37,067 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2022-11-25 23:38:37,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:38:37,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 36 [2022-11-25 23:38:37,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:37,069 INFO L225 Difference]: With dead ends: 57 [2022-11-25 23:38:37,069 INFO L226 Difference]: Without dead ends: 55 [2022-11-25 23:38:37,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-25 23:38:37,070 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:37,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:38:37,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-25 23:38:37,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-25 23:38:37,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 40 states have (on average 1.3) internal successors, (52), 41 states have internal predecessors, (52), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-25 23:38:37,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 74 transitions. [2022-11-25 23:38:37,077 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 74 transitions. Word has length 36 [2022-11-25 23:38:37,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:37,078 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 74 transitions. [2022-11-25 23:38:37,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 23:38:37,078 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 74 transitions. [2022-11-25 23:38:37,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-25 23:38:37,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:37,080 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:37,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:37,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:37,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:37,483 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:38:37,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:37,483 INFO L85 PathProgramCache]: Analyzing trace with hash -987503231, now seen corresponding path program 1 times [2022-11-25 23:38:37,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:38:37,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278373495] [2022-11-25 23:38:37,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:37,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:37,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:38:37,485 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:38:37,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-25 23:38:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:37,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 23:38:37,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:37,936 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 23:38:37,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:38:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 23:38:38,175 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:38:38,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278373495] [2022-11-25 23:38:38,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278373495] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:38:38,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [366391400] [2022-11-25 23:38:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:38,175 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:38:38,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:38:38,179 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:38:38,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-25 23:38:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:38,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 23:38:38,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 23:38:38,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:38:38,831 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 23:38:38,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [366391400] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:38:38,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270716249] [2022-11-25 23:38:38,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:38,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:38:38,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:38:38,838 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:38:38,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 23:38:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:38,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 23:38:38,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 23:38:39,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:38:41,945 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 23:38:41,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270716249] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 23:38:41,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2022-11-25 23:38:41,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 10, 9, 9, 14] total 26 [2022-11-25 23:38:41,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306289532] [2022-11-25 23:38:41,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:41,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:38:41,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:38:41,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:38:41,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-11-25 23:38:41,947 INFO L87 Difference]: Start difference. First operand 55 states and 74 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-25 23:38:42,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:42,680 INFO L93 Difference]: Finished difference Result 73 states and 97 transitions. [2022-11-25 23:38:42,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 23:38:42,681 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 41 [2022-11-25 23:38:42,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:42,682 INFO L225 Difference]: With dead ends: 73 [2022-11-25 23:38:42,682 INFO L226 Difference]: Without dead ends: 71 [2022-11-25 23:38:42,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2022-11-25 23:38:42,683 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 53 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:42,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 296 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:38:42,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-25 23:38:42,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2022-11-25 23:38:42,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 45 states have internal predecessors, (57), 12 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-25 23:38:42,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 83 transitions. [2022-11-25 23:38:42,699 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 83 transitions. Word has length 41 [2022-11-25 23:38:42,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:42,700 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 83 transitions. [2022-11-25 23:38:42,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-25 23:38:42,700 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 83 transitions. [2022-11-25 23:38:42,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-25 23:38:42,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:42,702 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:42,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:42,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:43,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:43,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:43,309 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:38:43,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:43,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1731684142, now seen corresponding path program 1 times [2022-11-25 23:38:43,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:38:43,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003806027] [2022-11-25 23:38:43,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:43,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:43,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:38:43,311 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:38:43,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-25 23:38:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:43,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 23:38:43,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:43,599 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 23:38:43,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:38:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 23:38:43,917 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:38:43,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003806027] [2022-11-25 23:38:43,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003806027] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:38:43,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1087584158] [2022-11-25 23:38:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:43,918 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:38:43,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:38:43,923 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:38:43,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-25 23:38:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:44,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:38:44,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:44,130 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 23:38:44,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:38:44,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1087584158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:44,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 23:38:44,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 9] total 14 [2022-11-25 23:38:44,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54127962] [2022-11-25 23:38:44,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:44,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:38:44,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:38:44,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:38:44,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-25 23:38:44,133 INFO L87 Difference]: Start difference. First operand 61 states and 83 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-25 23:38:44,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:44,144 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2022-11-25 23:38:44,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:38:44,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 43 [2022-11-25 23:38:44,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:44,146 INFO L225 Difference]: With dead ends: 64 [2022-11-25 23:38:44,146 INFO L226 Difference]: Without dead ends: 61 [2022-11-25 23:38:44,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-25 23:38:44,147 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:44,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:38:44,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-25 23:38:44,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-25 23:38:44,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 45 states have internal predecessors, (56), 12 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-25 23:38:44,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 82 transitions. [2022-11-25 23:38:44,164 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 82 transitions. Word has length 43 [2022-11-25 23:38:44,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:44,165 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-11-25 23:38:44,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-25 23:38:44,165 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 82 transitions. [2022-11-25 23:38:44,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 23:38:44,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:44,167 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:44,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:44,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:44,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:44,568 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:38:44,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:44,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1178252102, now seen corresponding path program 1 times [2022-11-25 23:38:44,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:38:44,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105898226] [2022-11-25 23:38:44,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:44,569 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:44,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:38:44,570 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:38:44,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-25 23:38:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:44,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:38:44,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:38:44,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:38:44,689 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:38:44,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105898226] [2022-11-25 23:38:44,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105898226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:44,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:38:44,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:38:44,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515849299] [2022-11-25 23:38:44,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:44,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:38:44,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:38:44,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:38:44,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:38:44,691 INFO L87 Difference]: Start difference. First operand 61 states and 82 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 23:38:44,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:44,744 INFO L93 Difference]: Finished difference Result 85 states and 111 transitions. [2022-11-25 23:38:44,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:38:44,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2022-11-25 23:38:44,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:44,747 INFO L225 Difference]: With dead ends: 85 [2022-11-25 23:38:44,748 INFO L226 Difference]: Without dead ends: 64 [2022-11-25 23:38:44,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:38:44,750 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:44,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 186 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:38:44,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-25 23:38:44,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-25 23:38:44,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 47 states have internal predecessors, (58), 12 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (16), 14 states have call predecessors, (16), 12 states have call successors, (16) [2022-11-25 23:38:44,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2022-11-25 23:38:44,766 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 46 [2022-11-25 23:38:44,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:44,766 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2022-11-25 23:38:44,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 23:38:44,767 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2022-11-25 23:38:44,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 23:38:44,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:44,772 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:44,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:44,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:44,986 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:38:44,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:44,986 INFO L85 PathProgramCache]: Analyzing trace with hash -101611576, now seen corresponding path program 1 times [2022-11-25 23:38:44,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:38:44,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127705041] [2022-11-25 23:38:44,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:44,987 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:44,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:38:44,988 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:38:44,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-25 23:38:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:45,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 23:38:45,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 23:38:46,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:38:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 23:38:47,230 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:38:47,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127705041] [2022-11-25 23:38:47,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127705041] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:38:47,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1646794688] [2022-11-25 23:38:47,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:47,231 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:38:47,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:38:47,232 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:38:47,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-25 23:38:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:47,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 23:38:47,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:47,707 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:38:47,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:38:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 23:38:48,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1646794688] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:38:48,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381306620] [2022-11-25 23:38:48,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:48,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:38:48,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:38:48,493 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:38:48,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-25 23:38:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:48,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 23:38:48,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 23:38:49,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:38:51,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381306620] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:38:51,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-25 23:38:51,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10, 10, 11] total 33 [2022-11-25 23:38:51,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088209143] [2022-11-25 23:38:51,269 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-25 23:38:51,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-25 23:38:51,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:38:51,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-25 23:38:51,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1422, Unknown=0, NotChecked=0, Total=1560 [2022-11-25 23:38:51,271 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 33 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 27 states have internal predecessors, (78), 12 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (25), 15 states have call predecessors, (25), 12 states have call successors, (25) [2022-11-25 23:38:55,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:55,747 INFO L93 Difference]: Finished difference Result 174 states and 232 transitions. [2022-11-25 23:38:55,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 23:38:55,749 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 27 states have internal predecessors, (78), 12 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (25), 15 states have call predecessors, (25), 12 states have call successors, (25) Word has length 46 [2022-11-25 23:38:55,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:55,750 INFO L225 Difference]: With dead ends: 174 [2022-11-25 23:38:55,750 INFO L226 Difference]: Without dead ends: 136 [2022-11-25 23:38:55,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=441, Invalid=2639, Unknown=0, NotChecked=0, Total=3080 [2022-11-25 23:38:55,761 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 333 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:55,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 983 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-25 23:38:55,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-25 23:38:55,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 77. [2022-11-25 23:38:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 54 states have internal predecessors, (70), 16 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (23), 20 states have call predecessors, (23), 16 states have call successors, (23) [2022-11-25 23:38:55,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 109 transitions. [2022-11-25 23:38:55,774 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 109 transitions. Word has length 46 [2022-11-25 23:38:55,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:55,774 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 109 transitions. [2022-11-25 23:38:55,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 27 states have internal predecessors, (78), 12 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (25), 15 states have call predecessors, (25), 12 states have call successors, (25) [2022-11-25 23:38:55,775 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 109 transitions. [2022-11-25 23:38:55,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-25 23:38:55,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:55,776 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:55,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:55,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:56,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:56,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:38:56,390 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:38:56,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:56,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1695459100, now seen corresponding path program 1 times [2022-11-25 23:38:56,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:38:56,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821925578] [2022-11-25 23:38:56,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:56,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:56,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:38:56,392 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:38:56,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-25 23:38:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:56,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:38:56,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:56,499 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 23:38:56,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:38:56,500 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:38:56,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821925578] [2022-11-25 23:38:56,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821925578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:38:56,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:38:56,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:38:56,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023569951] [2022-11-25 23:38:56,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:38:56,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:38:56,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:38:56,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:38:56,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:38:56,505 INFO L87 Difference]: Start difference. First operand 77 states and 109 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 23:38:56,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:38:56,579 INFO L93 Difference]: Finished difference Result 102 states and 142 transitions. [2022-11-25 23:38:56,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:38:56,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2022-11-25 23:38:56,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:38:56,582 INFO L225 Difference]: With dead ends: 102 [2022-11-25 23:38:56,582 INFO L226 Difference]: Without dead ends: 81 [2022-11-25 23:38:56,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:38:56,583 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:38:56,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 195 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:38:56,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-25 23:38:56,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2022-11-25 23:38:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 states have internal predecessors, (71), 16 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (27), 20 states have call predecessors, (27), 16 states have call successors, (27) [2022-11-25 23:38:56,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 114 transitions. [2022-11-25 23:38:56,593 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 114 transitions. Word has length 48 [2022-11-25 23:38:56,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:38:56,594 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 114 transitions. [2022-11-25 23:38:56,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 23:38:56,594 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 114 transitions. [2022-11-25 23:38:56,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-25 23:38:56,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:38:56,595 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:38:56,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-25 23:38:56,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:56,808 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:38:56,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:38:56,809 INFO L85 PathProgramCache]: Analyzing trace with hash -754173183, now seen corresponding path program 1 times [2022-11-25 23:38:56,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:38:56,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516705822] [2022-11-25 23:38:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:56,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:38:56,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:38:56,810 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:38:56,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-25 23:38:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:56,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 23:38:56,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 23:38:57,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:38:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 23:38:57,830 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:38:57,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516705822] [2022-11-25 23:38:57,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516705822] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:38:57,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1345920564] [2022-11-25 23:38:57,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:57,830 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:38:57,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:38:57,831 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:38:57,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-25 23:38:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:58,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 23:38:58,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:58,404 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 23:38:58,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:38:58,863 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 23:38:58,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1345920564] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:38:58,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73552384] [2022-11-25 23:38:58,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:38:58,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:38:58,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:38:58,866 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:38:58,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-25 23:38:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:38:58,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 23:38:58,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:38:59,049 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 23:38:59,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:38:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 23:38:59,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73552384] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:38:59,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:38:59,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9, 10, 8, 9] total 22 [2022-11-25 23:38:59,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198208379] [2022-11-25 23:38:59,242 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:38:59,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 23:38:59,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:38:59,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 23:38:59,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2022-11-25 23:38:59,244 INFO L87 Difference]: Start difference. First operand 79 states and 114 transitions. Second operand has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 15 states have internal predecessors, (58), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-25 23:39:00,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:00,942 INFO L93 Difference]: Finished difference Result 146 states and 205 transitions. [2022-11-25 23:39:00,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-25 23:39:00,943 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 15 states have internal predecessors, (58), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) Word has length 48 [2022-11-25 23:39:00,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:00,944 INFO L225 Difference]: With dead ends: 146 [2022-11-25 23:39:00,944 INFO L226 Difference]: Without dead ends: 120 [2022-11-25 23:39:00,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=220, Invalid=1112, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 23:39:00,946 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 157 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:00,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 967 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 23:39:00,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-25 23:39:00,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 99. [2022-11-25 23:39:00,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 22 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (36), 26 states have call predecessors, (36), 22 states have call successors, (36) [2022-11-25 23:39:00,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 143 transitions. [2022-11-25 23:39:00,960 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 143 transitions. Word has length 48 [2022-11-25 23:39:00,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:00,960 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 143 transitions. [2022-11-25 23:39:00,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 15 states have internal predecessors, (58), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-25 23:39:00,961 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 143 transitions. [2022-11-25 23:39:00,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-25 23:39:00,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:00,962 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:39:00,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-25 23:39:01,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-25 23:39:01,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-25 23:39:01,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:39:01,566 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:39:01,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:01,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1891599591, now seen corresponding path program 1 times [2022-11-25 23:39:01,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:39:01,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432793640] [2022-11-25 23:39:01,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:01,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:01,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:39:01,567 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:39:01,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-25 23:39:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:01,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 23:39:01,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 23:39:01,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:39:01,820 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:39:01,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432793640] [2022-11-25 23:39:01,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432793640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:39:01,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:39:01,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 23:39:01,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020735169] [2022-11-25 23:39:01,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:39:01,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:39:01,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:39:01,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:39:01,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:39:01,822 INFO L87 Difference]: Start difference. First operand 99 states and 143 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-25 23:39:02,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:02,208 INFO L93 Difference]: Finished difference Result 165 states and 228 transitions. [2022-11-25 23:39:02,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 23:39:02,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 48 [2022-11-25 23:39:02,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:02,210 INFO L225 Difference]: With dead ends: 165 [2022-11-25 23:39:02,210 INFO L226 Difference]: Without dead ends: 115 [2022-11-25 23:39:02,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-25 23:39:02,211 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 53 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:02,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 397 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:39:02,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-25 23:39:02,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 99. [2022-11-25 23:39:02,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.2) internal successors, (84), 70 states have internal predecessors, (84), 22 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (36), 26 states have call predecessors, (36), 22 states have call successors, (36) [2022-11-25 23:39:02,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 142 transitions. [2022-11-25 23:39:02,224 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 142 transitions. Word has length 48 [2022-11-25 23:39:02,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:02,224 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 142 transitions. [2022-11-25 23:39:02,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-25 23:39:02,224 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 142 transitions. [2022-11-25 23:39:02,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-25 23:39:02,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:02,226 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:39:02,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-25 23:39:02,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:02,439 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:39:02,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:02,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1319000567, now seen corresponding path program 1 times [2022-11-25 23:39:02,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:39:02,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983155117] [2022-11-25 23:39:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:02,440 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:02,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:39:02,441 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:39:02,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-25 23:39:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:02,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:39:02,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:02,534 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 23:39:02,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:39:02,534 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:39:02,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983155117] [2022-11-25 23:39:02,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983155117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:39:02,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:39:02,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:39:02,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160423776] [2022-11-25 23:39:02,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:39:02,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:39:02,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:39:02,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:39:02,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:39:02,537 INFO L87 Difference]: Start difference. First operand 99 states and 142 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 23:39:02,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:02,578 INFO L93 Difference]: Finished difference Result 136 states and 192 transitions. [2022-11-25 23:39:02,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:39:02,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2022-11-25 23:39:02,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:02,580 INFO L225 Difference]: With dead ends: 136 [2022-11-25 23:39:02,580 INFO L226 Difference]: Without dead ends: 103 [2022-11-25 23:39:02,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:39:02,581 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:02,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:39:02,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-25 23:39:02,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2022-11-25 23:39:02,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.2) internal successors, (84), 70 states have internal predecessors, (84), 22 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (36), 26 states have call predecessors, (36), 22 states have call successors, (36) [2022-11-25 23:39:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 142 transitions. [2022-11-25 23:39:02,593 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 142 transitions. Word has length 49 [2022-11-25 23:39:02,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:02,593 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 142 transitions. [2022-11-25 23:39:02,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 23:39:02,594 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 142 transitions. [2022-11-25 23:39:02,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-25 23:39:02,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:02,595 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:39:02,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-25 23:39:02,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:02,807 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:39:02,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash 584647616, now seen corresponding path program 1 times [2022-11-25 23:39:02,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:39:02,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001460989] [2022-11-25 23:39:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:02,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:02,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:39:02,810 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:39:02,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-25 23:39:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:02,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:39:02,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 23:39:02,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:39:02,908 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:39:02,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001460989] [2022-11-25 23:39:02,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001460989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:39:02,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:39:02,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:39:02,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995425348] [2022-11-25 23:39:02,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:39:02,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:39:02,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:39:02,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:39:02,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:39:02,911 INFO L87 Difference]: Start difference. First operand 99 states and 142 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 23:39:02,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:02,972 INFO L93 Difference]: Finished difference Result 134 states and 185 transitions. [2022-11-25 23:39:02,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:39:02,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 50 [2022-11-25 23:39:02,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:02,974 INFO L225 Difference]: With dead ends: 134 [2022-11-25 23:39:02,974 INFO L226 Difference]: Without dead ends: 101 [2022-11-25 23:39:02,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:39:02,975 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:02,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:39:02,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-25 23:39:03,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2022-11-25 23:39:03,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 68 states have internal predecessors, (83), 22 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (30), 26 states have call predecessors, (30), 22 states have call successors, (30) [2022-11-25 23:39:03,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 135 transitions. [2022-11-25 23:39:03,004 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 135 transitions. Word has length 50 [2022-11-25 23:39:03,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:03,004 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 135 transitions. [2022-11-25 23:39:03,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 23:39:03,004 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 135 transitions. [2022-11-25 23:39:03,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-25 23:39:03,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:03,006 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:39:03,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-25 23:39:03,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:03,218 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:39:03,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:03,219 INFO L85 PathProgramCache]: Analyzing trace with hash -412424737, now seen corresponding path program 1 times [2022-11-25 23:39:03,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:39:03,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992182271] [2022-11-25 23:39:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:03,219 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:03,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:39:03,220 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:39:03,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-25 23:39:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:03,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 23:39:03,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 23:39:03,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:39:03,845 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:39:03,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992182271] [2022-11-25 23:39:03,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992182271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:39:03,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:39:03,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-25 23:39:03,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035114184] [2022-11-25 23:39:03,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:39:03,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 23:39:03,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:39:03,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 23:39:03,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-25 23:39:03,848 INFO L87 Difference]: Start difference. First operand 97 states and 135 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-25 23:39:05,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:05,009 INFO L93 Difference]: Finished difference Result 106 states and 150 transitions. [2022-11-25 23:39:05,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 23:39:05,010 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 50 [2022-11-25 23:39:05,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:05,011 INFO L225 Difference]: With dead ends: 106 [2022-11-25 23:39:05,011 INFO L226 Difference]: Without dead ends: 89 [2022-11-25 23:39:05,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2022-11-25 23:39:05,012 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 48 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:05,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 489 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 23:39:05,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-25 23:39:05,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2022-11-25 23:39:05,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 60 states have internal predecessors, (74), 18 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (25), 22 states have call predecessors, (25), 18 states have call successors, (25) [2022-11-25 23:39:05,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2022-11-25 23:39:05,021 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 50 [2022-11-25 23:39:05,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:05,022 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2022-11-25 23:39:05,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-25 23:39:05,022 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2022-11-25 23:39:05,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 23:39:05,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:05,023 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:39:05,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-25 23:39:05,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:05,236 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:39:05,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:05,237 INFO L85 PathProgramCache]: Analyzing trace with hash 992710810, now seen corresponding path program 1 times [2022-11-25 23:39:05,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:39:05,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306418009] [2022-11-25 23:39:05,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:05,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:05,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:39:05,239 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:39:05,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-25 23:39:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:05,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 23:39:05,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 23:39:05,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:39:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 23:39:05,787 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:39:05,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306418009] [2022-11-25 23:39:05,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306418009] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:39:05,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [126137426] [2022-11-25 23:39:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:05,788 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:39:05,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:39:05,789 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:39:05,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-25 23:39:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:06,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 23:39:06,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:06,184 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 23:39:06,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:39:07,998 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 23:39:07,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [126137426] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:39:07,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991908341] [2022-11-25 23:39:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:07,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:39:07,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:39:08,000 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:39:08,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-25 23:39:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:08,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 23:39:08,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:39:08,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:39:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 23:39:09,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991908341] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:39:09,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:39:09,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8, 9, 10, 12] total 17 [2022-11-25 23:39:09,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063569373] [2022-11-25 23:39:09,154 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:39:09,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 23:39:09,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:39:09,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 23:39:09,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-25 23:39:09,156 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 23:39:09,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:09,819 INFO L93 Difference]: Finished difference Result 130 states and 174 transitions. [2022-11-25 23:39:09,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 23:39:09,820 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 53 [2022-11-25 23:39:09,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:09,821 INFO L225 Difference]: With dead ends: 130 [2022-11-25 23:39:09,821 INFO L226 Difference]: Without dead ends: 95 [2022-11-25 23:39:09,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2022-11-25 23:39:09,822 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 87 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:09,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 519 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:39:09,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-25 23:39:09,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 81. [2022-11-25 23:39:09,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 57 states have internal predecessors, (68), 17 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (24), 21 states have call predecessors, (24), 17 states have call successors, (24) [2022-11-25 23:39:09,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 109 transitions. [2022-11-25 23:39:09,832 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 109 transitions. Word has length 53 [2022-11-25 23:39:09,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:09,832 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 109 transitions. [2022-11-25 23:39:09,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 23:39:09,832 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 109 transitions. [2022-11-25 23:39:09,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 23:39:09,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:09,833 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:39:09,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-25 23:39:10,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-25 23:39:10,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-25 23:39:10,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:39:10,438 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:39:10,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:10,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1377347757, now seen corresponding path program 1 times [2022-11-25 23:39:10,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:39:10,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012200489] [2022-11-25 23:39:10,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:10,439 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:10,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:39:10,440 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:39:10,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-25 23:39:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:10,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 23:39:10,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:39:11,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:39:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 23:39:12,770 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:39:12,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012200489] [2022-11-25 23:39:12,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012200489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:39:12,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [386942231] [2022-11-25 23:39:12,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:12,771 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:39:12,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:39:12,772 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:39:12,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-25 23:39:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:13,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 23:39:13,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:13,323 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 23:39:13,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:39:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 23:39:14,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [386942231] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:39:14,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596313665] [2022-11-25 23:39:14,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:14,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:39:14,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:39:14,203 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:39:14,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-25 23:39:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:14,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 23:39:14,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:14,611 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 23:39:14,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:39:15,807 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-25 23:39:15,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596313665] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:39:15,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:39:15,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 15, 16] total 27 [2022-11-25 23:39:15,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231492218] [2022-11-25 23:39:15,808 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:39:15,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-25 23:39:15,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:39:15,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-25 23:39:15,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2022-11-25 23:39:15,810 INFO L87 Difference]: Start difference. First operand 81 states and 109 transitions. Second operand has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 23 states have internal predecessors, (54), 4 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-25 23:39:17,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:17,895 INFO L93 Difference]: Finished difference Result 127 states and 168 transitions. [2022-11-25 23:39:17,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 23:39:17,896 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 23 states have internal predecessors, (54), 4 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 55 [2022-11-25 23:39:17,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:17,897 INFO L225 Difference]: With dead ends: 127 [2022-11-25 23:39:17,897 INFO L226 Difference]: Without dead ends: 94 [2022-11-25 23:39:17,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 294 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=207, Invalid=1125, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 23:39:17,899 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 132 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:17,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 482 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 23:39:17,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-25 23:39:17,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2022-11-25 23:39:17,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 57 states have internal predecessors, (66), 17 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (23), 20 states have call predecessors, (23), 17 states have call successors, (23) [2022-11-25 23:39:17,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 106 transitions. [2022-11-25 23:39:17,907 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 106 transitions. Word has length 55 [2022-11-25 23:39:17,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:17,908 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 106 transitions. [2022-11-25 23:39:17,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 23 states have internal predecessors, (54), 4 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-25 23:39:17,908 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 106 transitions. [2022-11-25 23:39:17,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-25 23:39:17,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:17,909 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:39:17,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-25 23:39:18,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-25 23:39:18,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2022-11-25 23:39:18,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 23:39:18,516 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:39:18,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:18,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1696305608, now seen corresponding path program 1 times [2022-11-25 23:39:18,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:39:18,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508902441] [2022-11-25 23:39:18,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:18,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:18,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:39:18,517 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:39:18,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-25 23:39:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:18,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 23:39:18,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 23:39:18,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:39:18,813 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:39:18,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508902441] [2022-11-25 23:39:18,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508902441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:39:18,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:39:18,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 23:39:18,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871347667] [2022-11-25 23:39:18,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:39:18,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 23:39:18,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:39:18,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 23:39:18,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:39:18,815 INFO L87 Difference]: Start difference. First operand 80 states and 106 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 23:39:19,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:19,717 INFO L93 Difference]: Finished difference Result 104 states and 133 transitions. [2022-11-25 23:39:19,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 23:39:19,717 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 60 [2022-11-25 23:39:19,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:19,718 INFO L225 Difference]: With dead ends: 104 [2022-11-25 23:39:19,718 INFO L226 Difference]: Without dead ends: 80 [2022-11-25 23:39:19,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-25 23:39:19,719 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 41 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:19,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 292 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 23:39:19,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-25 23:39:19,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-25 23:39:19,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 57 states have internal predecessors, (66), 17 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (21), 20 states have call predecessors, (21), 17 states have call successors, (21) [2022-11-25 23:39:19,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions. [2022-11-25 23:39:19,728 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 60 [2022-11-25 23:39:19,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:19,728 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions. [2022-11-25 23:39:19,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 23:39:19,728 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions. [2022-11-25 23:39:19,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-25 23:39:19,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:19,730 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:39:19,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-25 23:39:19,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:19,942 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:39:19,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:19,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1055709639, now seen corresponding path program 1 times [2022-11-25 23:39:19,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:39:19,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881053583] [2022-11-25 23:39:19,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:19,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:19,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:39:19,944 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:39:19,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-25 23:39:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:20,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 23:39:20,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 23:39:20,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:39:20,307 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:39:20,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881053583] [2022-11-25 23:39:20,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881053583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:39:20,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:39:20,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 23:39:20,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620748452] [2022-11-25 23:39:20,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:39:20,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 23:39:20,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:39:20,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 23:39:20,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:39:20,309 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 23:39:20,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:20,893 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2022-11-25 23:39:20,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 23:39:20,894 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 61 [2022-11-25 23:39:20,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:20,895 INFO L225 Difference]: With dead ends: 106 [2022-11-25 23:39:20,895 INFO L226 Difference]: Without dead ends: 82 [2022-11-25 23:39:20,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-25 23:39:20,896 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 38 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:20,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 298 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:39:20,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-25 23:39:20,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-11-25 23:39:20,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 59 states have internal predecessors, (67), 17 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (23), 20 states have call predecessors, (23), 17 states have call successors, (23) [2022-11-25 23:39:20,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 107 transitions. [2022-11-25 23:39:20,904 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 107 transitions. Word has length 61 [2022-11-25 23:39:20,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:20,904 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 107 transitions. [2022-11-25 23:39:20,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 23:39:20,905 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 107 transitions. [2022-11-25 23:39:20,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 23:39:20,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:20,906 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:39:20,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-25 23:39:21,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:21,115 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:39:21,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:21,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1911580054, now seen corresponding path program 1 times [2022-11-25 23:39:21,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:39:21,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010701331] [2022-11-25 23:39:21,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:21,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:21,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:39:21,116 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:39:21,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-25 23:39:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:21,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 23:39:21,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 23:39:21,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:39:21,779 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 23:39:21,779 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:39:21,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010701331] [2022-11-25 23:39:21,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010701331] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:39:21,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1835315262] [2022-11-25 23:39:21,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:21,780 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:39:21,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:39:21,783 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:39:21,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-11-25 23:39:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:22,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 23:39:22,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:22,356 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-25 23:39:22,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:39:22,912 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 23:39:22,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1835315262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:39:22,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581899457] [2022-11-25 23:39:22,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:22,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:39:22,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:39:22,914 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:39:22,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-25 23:39:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:23,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 23:39:23,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 23:39:23,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:39:23,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581899457] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:39:23,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-25 23:39:23,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8, 9, 10] total 24 [2022-11-25 23:39:23,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419699671] [2022-11-25 23:39:23,640 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-25 23:39:23,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 23:39:23,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:39:23,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 23:39:23,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-11-25 23:39:23,642 INFO L87 Difference]: Start difference. First operand 82 states and 107 transitions. Second operand has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 17 states have internal predecessors, (79), 5 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (27), 11 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-25 23:39:25,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:25,486 INFO L93 Difference]: Finished difference Result 111 states and 136 transitions. [2022-11-25 23:39:25,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 23:39:25,487 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 17 states have internal predecessors, (79), 5 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (27), 11 states have call predecessors, (27), 5 states have call successors, (27) Word has length 62 [2022-11-25 23:39:25,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:25,488 INFO L225 Difference]: With dead ends: 111 [2022-11-25 23:39:25,488 INFO L226 Difference]: Without dead ends: 51 [2022-11-25 23:39:25,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=169, Invalid=1163, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 23:39:25,490 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 81 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:25,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 413 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 23:39:25,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-25 23:39:25,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2022-11-25 23:39:25,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-25 23:39:25,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2022-11-25 23:39:25,506 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 62 [2022-11-25 23:39:25,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:25,507 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2022-11-25 23:39:25,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 17 states have internal predecessors, (79), 5 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (27), 11 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-25 23:39:25,507 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2022-11-25 23:39:25,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 23:39:25,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:25,509 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:39:25,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2022-11-25 23:39:25,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-25 23:39:25,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-25 23:39:26,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:26,113 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:39:26,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:26,114 INFO L85 PathProgramCache]: Analyzing trace with hash -187739156, now seen corresponding path program 1 times [2022-11-25 23:39:26,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:39:26,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153272409] [2022-11-25 23:39:26,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:26,114 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:26,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:39:26,115 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:39:26,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-25 23:39:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:26,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 23:39:26,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 23:39:26,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:39:26,472 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:39:26,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153272409] [2022-11-25 23:39:26,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153272409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:39:26,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:39:26,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 23:39:26,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59483414] [2022-11-25 23:39:26,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:39:26,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 23:39:26,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:39:26,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 23:39:26,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:39:26,474 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 23:39:27,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:27,017 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2022-11-25 23:39:27,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 23:39:27,018 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2022-11-25 23:39:27,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:27,018 INFO L225 Difference]: With dead ends: 67 [2022-11-25 23:39:27,018 INFO L226 Difference]: Without dead ends: 50 [2022-11-25 23:39:27,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-25 23:39:27,019 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 32 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:27,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 241 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:39:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-25 23:39:27,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2022-11-25 23:39:27,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-25 23:39:27,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2022-11-25 23:39:27,024 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 62 [2022-11-25 23:39:27,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:27,024 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2022-11-25 23:39:27,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 23:39:27,025 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2022-11-25 23:39:27,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:39:27,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:27,026 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:39:27,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-11-25 23:39:27,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:27,235 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:39:27,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:27,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1230639261, now seen corresponding path program 1 times [2022-11-25 23:39:27,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:39:27,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974001607] [2022-11-25 23:39:27,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:27,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:27,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:39:27,236 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:39:27,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-25 23:39:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:27,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 23:39:27,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 23:39:27,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:39:27,578 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:39:27,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974001607] [2022-11-25 23:39:27,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974001607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:39:27,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:39:27,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 23:39:27,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921004164] [2022-11-25 23:39:27,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:39:27,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 23:39:27,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:39:27,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 23:39:27,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 23:39:27,580 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 23:39:28,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:28,055 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2022-11-25 23:39:28,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 23:39:28,056 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2022-11-25 23:39:28,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:28,057 INFO L225 Difference]: With dead ends: 64 [2022-11-25 23:39:28,057 INFO L226 Difference]: Without dead ends: 47 [2022-11-25 23:39:28,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-25 23:39:28,058 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 31 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:28,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 241 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 23:39:28,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-25 23:39:28,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2022-11-25 23:39:28,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-25 23:39:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2022-11-25 23:39:28,062 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 63 [2022-11-25 23:39:28,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:28,062 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2022-11-25 23:39:28,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 23:39:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2022-11-25 23:39:28,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:39:28,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:28,063 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:39:28,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-25 23:39:28,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:28,264 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:39:28,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:28,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1065424800, now seen corresponding path program 1 times [2022-11-25 23:39:28,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:39:28,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609909589] [2022-11-25 23:39:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:28,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:28,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:39:28,266 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:39:28,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-25 23:39:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:28,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 23:39:28,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-25 23:39:28,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:39:29,075 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-25 23:39:29,076 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:39:29,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609909589] [2022-11-25 23:39:29,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609909589] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:39:29,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1667831108] [2022-11-25 23:39:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:29,076 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 23:39:29,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 23:39:29,079 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 23:39:29,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2022-11-25 23:39:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:29,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 23:39:29,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-25 23:39:30,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:39:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-25 23:39:30,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1667831108] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:39:30,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949904829] [2022-11-25 23:39:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:30,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:39:30,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:39:30,426 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:39:30,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-25 23:39:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:30,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 23:39:30,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:30,812 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 23:39:30,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:39:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-25 23:39:31,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949904829] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:39:31,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 23:39:31,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 12, 9] total 28 [2022-11-25 23:39:31,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712283645] [2022-11-25 23:39:31,159 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 23:39:31,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-25 23:39:31,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:39:31,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-25 23:39:31,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2022-11-25 23:39:31,161 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 28 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 24 states have internal predecessors, (83), 10 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2022-11-25 23:39:32,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:32,651 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2022-11-25 23:39:32,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 23:39:32,652 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 24 states have internal predecessors, (83), 10 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) Word has length 63 [2022-11-25 23:39:32,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:32,653 INFO L225 Difference]: With dead ends: 88 [2022-11-25 23:39:32,653 INFO L226 Difference]: Without dead ends: 64 [2022-11-25 23:39:32,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 345 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=207, Invalid=1125, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 23:39:32,654 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 163 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:32,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 395 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 23:39:32,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-25 23:39:32,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 45. [2022-11-25 23:39:32,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 33 states have (on average 1.121212121212121) internal successors, (37), 34 states have internal predecessors, (37), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-25 23:39:32,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2022-11-25 23:39:32,659 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 63 [2022-11-25 23:39:32,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:32,659 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2022-11-25 23:39:32,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 24 states have internal predecessors, (83), 10 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2022-11-25 23:39:32,660 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2022-11-25 23:39:32,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 23:39:32,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:39:32,660 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:39:32,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-25 23:39:32,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-11-25 23:39:33,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2022-11-25 23:39:33,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 23:39:33,261 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:39:33,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:39:33,262 INFO L85 PathProgramCache]: Analyzing trace with hash -846570082, now seen corresponding path program 1 times [2022-11-25 23:39:33,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:39:33,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794882372] [2022-11-25 23:39:33,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:39:33,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:33,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:39:33,263 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 23:39:33,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-25 23:39:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:39:33,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:39:33,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:39:33,376 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 23:39:33,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:39:33,377 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:39:33,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794882372] [2022-11-25 23:39:33,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794882372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:39:33,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:39:33,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:39:33,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802784747] [2022-11-25 23:39:33,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:39:33,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:39:33,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:39:33,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:39:33,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:39:33,380 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 23:39:33,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:39:33,399 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2022-11-25 23:39:33,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:39:33,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2022-11-25 23:39:33,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:39:33,400 INFO L225 Difference]: With dead ends: 48 [2022-11-25 23:39:33,400 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 23:39:33,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:39:33,401 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:39:33,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:39:33,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 23:39:33,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 23:39:33,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 23:39:33,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 23:39:33,402 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2022-11-25 23:39:33,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:39:33,403 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 23:39:33,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 23:39:33,403 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 23:39:33,403 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 23:39:33,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-25 23:39:33,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-25 23:39:33,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-25 23:39:33,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 23:39:33,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-25 23:39:35,260 INFO L899 garLoopResultBuilder]: For program point isnan_floatFINAL(line 57) no Hoare annotation was computed. [2022-11-25 23:39:35,260 INFO L902 garLoopResultBuilder]: At program point isnan_floatENTRY(line 57) the Hoare annotation is: true [2022-11-25 23:39:35,260 INFO L899 garLoopResultBuilder]: For program point isnan_floatEXIT(line 57) no Hoare annotation was computed. [2022-11-25 23:39:35,260 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 82) no Hoare annotation was computed. [2022-11-25 23:39:35,260 INFO L895 garLoopResultBuilder]: At program point L81(line 81) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (= |ULTIMATE.start_fmax_float_#res#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse0 (= |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_fmax_float_~y#1|))) (and (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (not .cse0)))) [2022-11-25 23:39:35,261 INFO L899 garLoopResultBuilder]: For program point L81-1(line 81) no Hoare annotation was computed. [2022-11-25 23:39:35,261 INFO L899 garLoopResultBuilder]: For program point L81-2(line 81) no Hoare annotation was computed. [2022-11-25 23:39:35,261 INFO L895 garLoopResultBuilder]: At program point L81-3(line 81) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (= |ULTIMATE.start_fmax_float_#res#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse0 (= |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_fmax_float_~y#1|))) (and (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (not .cse0)))) [2022-11-25 23:39:35,261 INFO L899 garLoopResultBuilder]: For program point L81-4(line 81) no Hoare annotation was computed. [2022-11-25 23:39:35,261 INFO L899 garLoopResultBuilder]: For program point L81-6(lines 81 84) no Hoare annotation was computed. [2022-11-25 23:39:35,261 INFO L902 garLoopResultBuilder]: At program point L69(line 69) the Hoare annotation is: true [2022-11-25 23:39:35,262 INFO L899 garLoopResultBuilder]: For program point L69-1(line 69) no Hoare annotation was computed. [2022-11-25 23:39:35,262 INFO L899 garLoopResultBuilder]: For program point L69-2(line 69) no Hoare annotation was computed. [2022-11-25 23:39:35,262 INFO L895 garLoopResultBuilder]: At program point L69-3(line 69) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short11#1| (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (= (_ bv1 32) |ULTIMATE.start_main_#t~ret9#1|)) [2022-11-25 23:39:35,262 INFO L899 garLoopResultBuilder]: For program point L69-4(line 69) no Hoare annotation was computed. [2022-11-25 23:39:35,262 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-25 23:39:35,262 INFO L899 garLoopResultBuilder]: For program point L69-6(line 69) no Hoare annotation was computed. [2022-11-25 23:39:35,263 INFO L899 garLoopResultBuilder]: For program point L69-7(lines 69 70) no Hoare annotation was computed. [2022-11-25 23:39:35,263 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-25 23:39:35,263 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-25 23:39:35,263 INFO L899 garLoopResultBuilder]: For program point L69-9(lines 69 85) no Hoare annotation was computed. [2022-11-25 23:39:35,263 INFO L899 garLoopResultBuilder]: For program point L69-11(lines 69 85) no Hoare annotation was computed. [2022-11-25 23:39:35,263 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 76) no Hoare annotation was computed. [2022-11-25 23:39:35,263 INFO L895 garLoopResultBuilder]: At program point L53(lines 45 54) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (fp.eq |ULTIMATE.start_fmax_float_#res#1| |ULTIMATE.start_main_~y~0#1|) (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (not .cse0)) (and (= |ULTIMATE.start_fmax_float_#res#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse0 (= |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_fmax_float_~y#1|))))) [2022-11-25 23:39:35,264 INFO L899 garLoopResultBuilder]: For program point L82(line 82) no Hoare annotation was computed. [2022-11-25 23:39:35,264 INFO L895 garLoopResultBuilder]: At program point L70(line 70) the Hoare annotation is: (let ((.cse1 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (not |ULTIMATE.start_main_#t~short11#1|)) (.cse2 (not |ULTIMATE.start_main_#t~short15#1|))) (or (and (= |ULTIMATE.start_main_#t~ret10#1| (_ bv1 32)) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse0 (not .cse1) (= (_ bv1 32) |ULTIMATE.start_main_#t~ret9#1|) .cse2) (and (= (_ bv0 32) |ULTIMATE.start_main_#t~ret9#1|) .cse1 .cse0 .cse2))) [2022-11-25 23:39:35,264 INFO L899 garLoopResultBuilder]: For program point L70-1(line 70) no Hoare annotation was computed. [2022-11-25 23:39:35,264 INFO L899 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2022-11-25 23:39:35,264 INFO L895 garLoopResultBuilder]: At program point L70-3(line 70) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short14#1| (= (_ bv0 32) |ULTIMATE.start_main_#t~ret9#1|) (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|) (not |ULTIMATE.start_main_#t~short11#1|) (not |ULTIMATE.start_main_#t~short15#1|) (= |ULTIMATE.start_main_#t~ret12#1| (_ bv0 32))) [2022-11-25 23:39:35,265 INFO L899 garLoopResultBuilder]: For program point L70-4(line 70) no Hoare annotation was computed. [2022-11-25 23:39:35,265 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-25 23:39:35,265 INFO L899 garLoopResultBuilder]: For program point L70-6(line 70) no Hoare annotation was computed. [2022-11-25 23:39:35,265 INFO L902 garLoopResultBuilder]: At program point L87(lines 59 88) the Hoare annotation is: true [2022-11-25 23:39:35,265 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse1 (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_fmax_float_~y#1|))) (or (and (= |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (not (fp.eq |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_fmax_float_~x#1|)) (not .cse0) .cse1) (and (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse0 (= |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (not .cse1)))) [2022-11-25 23:39:35,265 INFO L899 garLoopResultBuilder]: For program point L50-1(lines 50 52) no Hoare annotation was computed. [2022-11-25 23:39:35,266 INFO L895 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse1 (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_fmax_float_~y#1|))) (or (and (= |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (not (fp.eq |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_fmax_float_~x#1|)) (not .cse0) .cse1) (and (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse0 (= |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (not .cse1)))) [2022-11-25 23:39:35,266 INFO L899 garLoopResultBuilder]: For program point L46-1(lines 46 48) no Hoare annotation was computed. [2022-11-25 23:39:35,266 INFO L895 garLoopResultBuilder]: At program point L75(line 75) the Hoare annotation is: (let ((.cse4 (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse5 (not .cse4))) (let ((.cse0 (or (fp.eq |ULTIMATE.start_fmax_float_#res#1| |ULTIMATE.start_main_~y~0#1|) .cse5)) (.cse1 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse2 (or (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_main_~y~0#1|) .cse5)) (.cse3 (or (fp.eq |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~y~0#1|) .cse5))) (or (and (= |ULTIMATE.start_fmax_float_#res#1| |ULTIMATE.start_main_~x~0#1|) .cse0 (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~x~0#1|) .cse1 (= |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_fmax_float_~y#1|)) .cse2 .cse3) (and .cse0 (not .cse1) .cse2 .cse3 .cse4))))) [2022-11-25 23:39:35,266 INFO L899 garLoopResultBuilder]: For program point L75-1(line 75) no Hoare annotation was computed. [2022-11-25 23:39:35,266 INFO L899 garLoopResultBuilder]: For program point L75-2(line 75) no Hoare annotation was computed. [2022-11-25 23:39:35,266 INFO L895 garLoopResultBuilder]: At program point L75-3(line 75) the Hoare annotation is: (and (fp.eq |ULTIMATE.start_fmax_float_#res#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_#t~short19#1| (fp.eq |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~y~0#1|) (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_#t~ret17#1| (_ bv1 32)) (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) [2022-11-25 23:39:35,267 INFO L899 garLoopResultBuilder]: For program point L75-4(line 75) no Hoare annotation was computed. [2022-11-25 23:39:35,267 INFO L899 garLoopResultBuilder]: For program point L75-6(lines 75 78) no Hoare annotation was computed. [2022-11-25 23:39:35,267 INFO L899 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2022-11-25 23:39:35,267 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 42) no Hoare annotation was computed. [2022-11-25 23:39:35,267 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatFINAL(lines 22 43) no Hoare annotation was computed. [2022-11-25 23:39:35,267 INFO L899 garLoopResultBuilder]: For program point L25-1(lines 25 29) no Hoare annotation was computed. [2022-11-25 23:39:35,268 INFO L895 garLoopResultBuilder]: At program point L25-2(lines 25 29) the Hoare annotation is: (= |__fpclassify_float_#in~x| __fpclassify_float_~x) [2022-11-25 23:39:35,268 INFO L899 garLoopResultBuilder]: For program point L25-3(lines 22 43) no Hoare annotation was computed. [2022-11-25 23:39:35,268 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 42) no Hoare annotation was computed. [2022-11-25 23:39:35,268 INFO L902 garLoopResultBuilder]: At program point __fpclassify_floatENTRY(lines 22 43) the Hoare annotation is: true [2022-11-25 23:39:35,268 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatEXIT(lines 22 43) no Hoare annotation was computed. [2022-11-25 23:39:35,268 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2022-11-25 23:39:35,272 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:39:35,274 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:39:35,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:39:35 BoogieIcfgContainer [2022-11-25 23:39:35,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:39:35,296 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:39:35,297 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:39:35,297 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:39:35,297 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:38:33" (3/4) ... [2022-11-25 23:39:35,300 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 23:39:35,306 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2022-11-25 23:39:35,307 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2022-11-25 23:39:35,315 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-25 23:39:35,315 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-25 23:39:35,315 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 23:39:35,316 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 23:39:35,346 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2022-11-25 23:39:35,346 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((~fp.eq~FLOAT(\result, y) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || ((((\result == x && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && !~fp.eq~FLOAT(y, y)) [2022-11-25 23:39:35,360 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-25 23:39:35,361 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:39:35,361 INFO L158 Benchmark]: Toolchain (without parser) took 63131.08ms. Allocated memory was 73.4MB in the beginning and 102.8MB in the end (delta: 29.4MB). Free memory was 54.4MB in the beginning and 49.3MB in the end (delta: 5.2MB). Peak memory consumption was 33.9MB. Max. memory is 16.1GB. [2022-11-25 23:39:35,362 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 73.4MB. Free memory was 52.1MB in the beginning and 51.9MB in the end (delta: 148.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:39:35,362 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.24ms. Allocated memory is still 73.4MB. Free memory was 54.2MB in the beginning and 42.8MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 23:39:35,362 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.07ms. Allocated memory is still 73.4MB. Free memory was 42.8MB in the beginning and 41.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:39:35,363 INFO L158 Benchmark]: Boogie Preprocessor took 32.64ms. Allocated memory is still 73.4MB. Free memory was 41.0MB in the beginning and 39.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:39:35,363 INFO L158 Benchmark]: RCFGBuilder took 502.31ms. Allocated memory is still 73.4MB. Free memory was 39.4MB in the beginning and 47.9MB in the end (delta: -8.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 23:39:35,363 INFO L158 Benchmark]: TraceAbstraction took 62231.57ms. Allocated memory was 73.4MB in the beginning and 102.8MB in the end (delta: 29.4MB). Free memory was 47.2MB in the beginning and 53.5MB in the end (delta: -6.2MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. [2022-11-25 23:39:35,364 INFO L158 Benchmark]: Witness Printer took 64.31ms. Allocated memory is still 102.8MB. Free memory was 52.4MB in the beginning and 49.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:39:35,365 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 73.4MB. Free memory was 52.1MB in the beginning and 51.9MB in the end (delta: 148.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 242.24ms. Allocated memory is still 73.4MB. Free memory was 54.2MB in the beginning and 42.8MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.07ms. Allocated memory is still 73.4MB. Free memory was 42.8MB in the beginning and 41.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.64ms. Allocated memory is still 73.4MB. Free memory was 41.0MB in the beginning and 39.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 502.31ms. Allocated memory is still 73.4MB. Free memory was 39.4MB in the beginning and 47.9MB in the end (delta: -8.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 62231.57ms. Allocated memory was 73.4MB in the beginning and 102.8MB in the end (delta: 29.4MB). Free memory was 47.2MB in the beginning and 53.5MB in the end (delta: -6.2MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. * Witness Printer took 64.31ms. Allocated memory is still 102.8MB. Free memory was 52.4MB in the beginning and 49.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 76]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 82]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 62.1s, OverallIterations: 26, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 17.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1314 SdHoareTripleChecker+Valid, 11.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1265 mSDsluCounter, 8173 SdHoareTripleChecker+Invalid, 10.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6701 mSDsCounter, 441 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6040 IncrementalHoareTripleChecker+Invalid, 6481 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 441 mSolverCounterUnsat, 1472 mSDtfsCounter, 6040 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3251 GetRequests, 2872 SyntacticMatches, 8 SemanticMatches, 371 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1614 ImplicationChecksByTransitivity, 13.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=13, InterpolantAutomatonStates: 234, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 26 MinimizatonAttempts, 190 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 152 PreInvPairs, 178 NumberOfFragments, 306 HoareAnnotationTreeSize, 152 FomulaSimplifications, 66 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 15 FomulaSimplificationsInter, 14308 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 27.7s InterpolantComputationTime, 2055 NumberOfCodeBlocks, 2055 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 3067 ConstructedInterpolants, 13 QuantifiedInterpolants, 10235 SizeOfPredicates, 260 NumberOfNonLiveVariables, 4739 ConjunctsInSsa, 509 ConjunctsInUnsatCore, 63 InterpolantComputations, 20 PerfectInterpolantSequences, 1711/1986 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: ((~fp.eq~FLOAT(\result, y) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || ((((\result == x && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && !~fp.eq~FLOAT(y, y)) RESULT: Ultimate proved your program to be correct! [2022-11-25 23:39:35,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d947fda-9305-4751-ab13-c7702958927b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE