./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/gcd_3.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_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 17434adceb46f4d2d18d3a85d6d4ed55515fdf3dbd1a573601edbae0be0a7746 --- 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 18:21:53,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:21:53,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:21:53,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:21:53,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:21:53,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:21:53,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:21:53,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:21:53,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:21:53,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:21:53,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:21:53,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:21:53,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:21:53,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:21:53,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:21:53,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:21:53,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:21:53,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:21:53,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:21:53,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:21:53,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:21:53,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:21:53,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:21:53,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:21:53,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:21:53,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:21:53,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:21:53,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:21:53,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:21:53,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:21:53,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:21:53,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:21:53,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:21:53,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:21:53,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:21:53,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:21:53,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:21:53,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:21:53,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:21:53,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:21:53,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:21:53,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:21:53,500 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:21:53,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:21:53,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:21:53,502 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:21:53,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:21:53,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:21:53,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:21:53,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:21:53,505 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:21:53,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:21:53,506 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:21:53,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:21:53,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:21:53,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:21:53,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:21:53,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:21:53,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:21:53,508 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:21:53,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:21:53,508 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:21:53,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:21:53,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:21:53,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:21:53,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:21:53,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:21:53,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:21:53,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:21:53,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:21:53,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:21:53,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:21:53,511 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:21:53,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:21:53,512 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:21:53,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:21:53,512 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17434adceb46f4d2d18d3a85d6d4ed55515fdf3dbd1a573601edbae0be0a7746 [2022-11-25 18:21:53,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:21:53,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:21:53,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:21:53,885 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:21:53,885 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:21:53,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/bitvector/gcd_3.c [2022-11-25 18:21:56,918 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:21:57,092 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:21:57,092 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/sv-benchmarks/c/bitvector/gcd_3.c [2022-11-25 18:21:57,100 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/data/0eeb6c1f5/cfc2eefce52d4700b581e495902d3a48/FLAG1bac55be2 [2022-11-25 18:21:57,115 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/data/0eeb6c1f5/cfc2eefce52d4700b581e495902d3a48 [2022-11-25 18:21:57,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:21:57,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:21:57,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:21:57,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:21:57,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:21:57,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:21:57" (1/1) ... [2022-11-25 18:21:57,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48875e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:57, skipping insertion in model container [2022-11-25 18:21:57,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:21:57" (1/1) ... [2022-11-25 18:21:57,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:21:57,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:21:57,372 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_722a8b2e-c235-4614-808c-4a66513d003b/sv-benchmarks/c/bitvector/gcd_3.c[664,677] [2022-11-25 18:21:57,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:21:57,419 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:21:57,435 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_722a8b2e-c235-4614-808c-4a66513d003b/sv-benchmarks/c/bitvector/gcd_3.c[664,677] [2022-11-25 18:21:57,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:21:57,462 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:21:57,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:57 WrapperNode [2022-11-25 18:21:57,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:21:57,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:21:57,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:21:57,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:21:57,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:57" (1/1) ... [2022-11-25 18:21:57,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:57" (1/1) ... [2022-11-25 18:21:57,500 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-11-25 18:21:57,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:21:57,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:21:57,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:21:57,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:21:57,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:57" (1/1) ... [2022-11-25 18:21:57,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:57" (1/1) ... [2022-11-25 18:21:57,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:57" (1/1) ... [2022-11-25 18:21:57,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:57" (1/1) ... [2022-11-25 18:21:57,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:57" (1/1) ... [2022-11-25 18:21:57,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:57" (1/1) ... [2022-11-25 18:21:57,533 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:57" (1/1) ... [2022-11-25 18:21:57,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:57" (1/1) ... [2022-11-25 18:21:57,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:21:57,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:21:57,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:21:57,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:21:57,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:57" (1/1) ... [2022-11-25 18:21:57,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:21:57,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:21:57,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:21:57,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:21:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:21:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:21:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:21:57,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:21:57,680 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:21:57,682 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:21:57,815 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:21:57,821 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:21:57,822 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 18:21:57,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:21:57 BoogieIcfgContainer [2022-11-25 18:21:57,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:21:57,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:21:57,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:21:57,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:21:57,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:21:57" (1/3) ... [2022-11-25 18:21:57,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375f4154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:21:57, skipping insertion in model container [2022-11-25 18:21:57,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:57" (2/3) ... [2022-11-25 18:21:57,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375f4154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:21:57, skipping insertion in model container [2022-11-25 18:21:57,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:21:57" (3/3) ... [2022-11-25 18:21:57,834 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3.c [2022-11-25 18:21:57,856 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:21:57,856 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:21:57,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:21:57,915 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=PETRI_NET, 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;@1e4f7fe5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:21:57,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:21:57,920 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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 18:21:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 18:21:57,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:21:57,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:21:57,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:21:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:21:57,934 INFO L85 PathProgramCache]: Analyzing trace with hash 777289588, now seen corresponding path program 1 times [2022-11-25 18:21:57,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:21:57,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605056882] [2022-11-25 18:21:57,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:21:57,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:21:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:21:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:21:58,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:21:58,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605056882] [2022-11-25 18:21:58,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605056882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:21:58,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:21:58,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:21:58,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112620384] [2022-11-25 18:21:58,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:21:58,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:21:58,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:21:58,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:21:58,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:21:58,352 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 18:21:58,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:21:58,408 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2022-11-25 18:21:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:21:58,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 18:21:58,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:21:58,425 INFO L225 Difference]: With dead ends: 48 [2022-11-25 18:21:58,433 INFO L226 Difference]: Without dead ends: 18 [2022-11-25 18:21:58,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 18:21:58,440 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:21:58,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 46 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:21:58,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-25 18:21:58,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 11. [2022-11-25 18:21:58,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:58,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-25 18:21:58,481 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 10 [2022-11-25 18:21:58,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:21:58,482 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-25 18:21:58,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 18:21:58,482 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-25 18:21:58,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 18:21:58,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:21:58,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:21:58,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:21:58,484 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:21:58,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:21:58,486 INFO L85 PathProgramCache]: Analyzing trace with hash -32057038, now seen corresponding path program 1 times [2022-11-25 18:21:58,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:21:58,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339922995] [2022-11-25 18:21:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:21:58,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:21:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:21:58,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:21:58,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:21:58,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339922995] [2022-11-25 18:21:58,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339922995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:21:58,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:21:58,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 18:21:58,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613303354] [2022-11-25 18:21:58,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:21:58,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:21:58,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:21:58,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:21:58,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:21:58,838 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 18:21:58,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:21:58,910 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-11-25 18:21:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:21:58,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 18:21:58,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:21:58,912 INFO L225 Difference]: With dead ends: 18 [2022-11-25 18:21:58,912 INFO L226 Difference]: Without dead ends: 12 [2022-11-25 18:21:58,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:21:58,914 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:21:58,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 30 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:21:58,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-25 18:21:58,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-25 18:21:58,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:58,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-11-25 18:21:58,919 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2022-11-25 18:21:58,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:21:58,919 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-11-25 18:21:58,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 18:21:58,920 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-11-25 18:21:58,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 18:21:58,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:21:58,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:21:58,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:21:58,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:21:58,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:21:58,922 INFO L85 PathProgramCache]: Analyzing trace with hash 607524954, now seen corresponding path program 1 times [2022-11-25 18:21:58,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:21:58,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46469031] [2022-11-25 18:21:58,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:21:58,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:21:58,951 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:21:58,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927193098] [2022-11-25 18:21:58,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:21:58,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:21:58,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:21:58,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:21:58,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:21:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:21:59,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 18:21:59,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:22:13,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:22:13,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46469031] [2022-11-25 18:22:13,499 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:22:13,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927193098] [2022-11-25 18:22:13,500 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-25 18:22:13,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 139 [2022-11-25 18:22:13,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:22:13,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-25 18:22:13,701 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:625) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 51 more [2022-11-25 18:22:13,704 INFO L158 Benchmark]: Toolchain (without parser) took 16585.05ms. Allocated memory is still 184.5MB. Free memory was 149.7MB in the beginning and 76.0MB in the end (delta: 73.7MB). Peak memory consumption was 72.4MB. Max. memory is 16.1GB. [2022-11-25 18:22:13,705 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory is still 93.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:22:13,705 INFO L158 Benchmark]: CACSL2BoogieTranslator took 342.09ms. Allocated memory is still 184.5MB. Free memory was 149.7MB in the beginning and 148.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:22:13,706 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.38ms. Allocated memory is still 184.5MB. Free memory was 148.2MB in the beginning and 146.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:22:13,706 INFO L158 Benchmark]: Boogie Preprocessor took 41.01ms. Allocated memory is still 184.5MB. Free memory was 146.5MB in the beginning and 145.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:22:13,707 INFO L158 Benchmark]: RCFGBuilder took 281.61ms. Allocated memory is still 184.5MB. Free memory was 145.2MB in the beginning and 134.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 18:22:13,708 INFO L158 Benchmark]: TraceAbstraction took 15877.03ms. Allocated memory is still 184.5MB. Free memory was 133.9MB in the beginning and 76.0MB in the end (delta: 57.9MB). Peak memory consumption was 59.6MB. Max. memory is 16.1GB. [2022-11-25 18:22:13,710 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory is still 93.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 342.09ms. Allocated memory is still 184.5MB. Free memory was 149.7MB in the beginning and 148.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.38ms. Allocated memory is still 184.5MB. Free memory was 148.2MB in the beginning and 146.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.01ms. Allocated memory is still 184.5MB. Free memory was 146.5MB in the beginning and 145.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 281.61ms. Allocated memory is still 184.5MB. Free memory was 145.2MB in the beginning and 134.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 15877.03ms. Allocated memory is still 184.5MB. Free memory was 133.9MB in the beginning and 76.0MB in the end (delta: 57.9MB). Peak memory consumption was 59.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 17434adceb46f4d2d18d3a85d6d4ed55515fdf3dbd1a573601edbae0be0a7746 --- 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 18:22:16,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:22:16,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:22:16,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:22:16,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:22:16,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:22:16,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:22:16,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:22:16,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:22:16,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:22:16,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:22:16,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:22:16,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:22:16,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:22:16,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:22:16,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:22:16,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:22:16,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:22:16,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:22:16,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:22:16,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:22:16,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:22:16,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:22:16,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:22:16,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:22:16,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:22:16,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:22:16,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:22:16,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:22:16,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:22:16,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:22:16,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:22:16,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:22:16,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:22:16,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:22:16,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:22:16,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:22:16,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:22:16,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:22:16,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:22:16,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:22:16,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-25 18:22:16,226 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:22:16,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:22:16,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:22:16,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:22:16,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:22:16,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:22:16,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:22:16,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:22:16,232 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:22:16,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:22:16,233 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:22:16,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:22:16,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:22:16,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:22:16,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:22:16,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:22:16,235 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:22:16,235 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 18:22:16,235 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 18:22:16,236 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:22:16,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:22:16,236 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:22:16,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:22:16,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:22:16,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:22:16,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:22:16,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:22:16,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:22:16,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:22:16,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:22:16,239 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 18:22:16,240 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 18:22:16,240 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:22:16,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:22:16,241 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:22:16,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:22:16,241 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 18:22:16,242 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17434adceb46f4d2d18d3a85d6d4ed55515fdf3dbd1a573601edbae0be0a7746 [2022-11-25 18:22:16,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:22:16,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:22:16,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:22:16,704 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:22:16,704 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:22:16,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/bitvector/gcd_3.c [2022-11-25 18:22:19,811 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:22:20,043 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:22:20,044 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/sv-benchmarks/c/bitvector/gcd_3.c [2022-11-25 18:22:20,050 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/data/09140a3ce/1e4ffcd915a048c1bc62384621dc0bcd/FLAG321d8b436 [2022-11-25 18:22:20,072 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/data/09140a3ce/1e4ffcd915a048c1bc62384621dc0bcd [2022-11-25 18:22:20,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:22:20,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:22:20,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:22:20,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:22:20,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:22:20,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:20" (1/1) ... [2022-11-25 18:22:20,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e6d7b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:20, skipping insertion in model container [2022-11-25 18:22:20,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:20" (1/1) ... [2022-11-25 18:22:20,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:22:20,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:22:20,321 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_722a8b2e-c235-4614-808c-4a66513d003b/sv-benchmarks/c/bitvector/gcd_3.c[664,677] [2022-11-25 18:22:20,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:22:20,375 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:22:20,394 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_722a8b2e-c235-4614-808c-4a66513d003b/sv-benchmarks/c/bitvector/gcd_3.c[664,677] [2022-11-25 18:22:20,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:22:20,428 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:22:20,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:20 WrapperNode [2022-11-25 18:22:20,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:22:20,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:22:20,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:22:20,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:22:20,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:20" (1/1) ... [2022-11-25 18:22:20,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:20" (1/1) ... [2022-11-25 18:22:20,474 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2022-11-25 18:22:20,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:22:20,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:22:20,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:22:20,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:22:20,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:20" (1/1) ... [2022-11-25 18:22:20,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:20" (1/1) ... [2022-11-25 18:22:20,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:20" (1/1) ... [2022-11-25 18:22:20,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:20" (1/1) ... [2022-11-25 18:22:20,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:20" (1/1) ... [2022-11-25 18:22:20,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:20" (1/1) ... [2022-11-25 18:22:20,517 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:20" (1/1) ... [2022-11-25 18:22:20,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:20" (1/1) ... [2022-11-25 18:22:20,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:22:20,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:22:20,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:22:20,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:22:20,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:20" (1/1) ... [2022-11-25 18:22:20,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:22:20,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:22:20,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:22:20,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:22:20,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:22:20,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 18:22:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:22:20,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:22:20,708 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:22:20,710 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:22:20,970 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:22:20,976 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:22:20,977 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 18:22:20,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:22:20 BoogieIcfgContainer [2022-11-25 18:22:20,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:22:20,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:22:20,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:22:20,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:22:20,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:22:20" (1/3) ... [2022-11-25 18:22:20,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e3a4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:22:20, skipping insertion in model container [2022-11-25 18:22:20,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:20" (2/3) ... [2022-11-25 18:22:20,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e3a4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:22:20, skipping insertion in model container [2022-11-25 18:22:20,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:22:20" (3/3) ... [2022-11-25 18:22:21,000 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3.c [2022-11-25 18:22:21,031 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:22:21,031 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:22:21,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:22:21,111 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=PETRI_NET, 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;@3d7a2afc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:22:21,111 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:22:21,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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 18:22:21,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 18:22:21,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:22:21,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:22:21,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:22:21,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:21,131 INFO L85 PathProgramCache]: Analyzing trace with hash 777289588, now seen corresponding path program 1 times [2022-11-25 18:22:21,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:22:21,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543527117] [2022-11-25 18:22:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:21,144 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 18:22:21,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:22:21,146 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:22:21,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:22:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:21,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:22:21,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:22:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:21,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:22:21,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:22:21,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543527117] [2022-11-25 18:22:21,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543527117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:22:21,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:22:21,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:22:21,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938638472] [2022-11-25 18:22:21,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:22:21,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:22:21,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:22:21,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:22:21,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:22:21,362 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 18:22:21,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:22:21,423 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2022-11-25 18:22:21,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:22:21,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 18:22:21,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:22:21,434 INFO L225 Difference]: With dead ends: 28 [2022-11-25 18:22:21,434 INFO L226 Difference]: Without dead ends: 12 [2022-11-25 18:22:21,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 18:22:21,440 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 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 18:22:21,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:22:21,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-25 18:22:21,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-25 18:22:21,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 18:22:21,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-11-25 18:22:21,484 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 10 [2022-11-25 18:22:21,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:22:21,484 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-11-25 18:22:21,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 18:22:21,485 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-11-25 18:22:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 18:22:21,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:22:21,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:22:21,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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)] Ended with exit code 0 [2022-11-25 18:22:21,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:22:21,698 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:22:21,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:21,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1742670346, now seen corresponding path program 1 times [2022-11-25 18:22:21,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:22:21,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816730130] [2022-11-25 18:22:21,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:21,700 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 18:22:21,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:22:21,704 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:22:21,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:22:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:21,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:22:21,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:22:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:21,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:22:21,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:22:21,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816730130] [2022-11-25 18:22:21,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816730130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:22:21,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:22:21,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:22:21,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595111225] [2022-11-25 18:22:21,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:22:21,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:22:21,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:22:21,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:22:21,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:22:21,800 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 18:22:21,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:22:21,868 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-11-25 18:22:21,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:22:21,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 18:22:21,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:22:21,870 INFO L225 Difference]: With dead ends: 28 [2022-11-25 18:22:21,870 INFO L226 Difference]: Without dead ends: 19 [2022-11-25 18:22:21,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 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 18:22:21,872 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:22:21,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 28 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:22:21,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-25 18:22:21,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 12. [2022-11-25 18:22:21,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-11-25 18:22:21,878 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2022-11-25 18:22:21,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:22:21,878 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-11-25 18:22:21,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 18:22:21,879 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-11-25 18:22:21,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 18:22:21,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:22:21,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:22:21,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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)] Ended with exit code 0 [2022-11-25 18:22:22,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:22:22,090 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:22:22,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:22,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1742950324, now seen corresponding path program 1 times [2022-11-25 18:22:22,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:22:22,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513959753] [2022-11-25 18:22:22,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:22,092 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 18:22:22,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:22:22,093 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:22:22,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:22:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:22,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:22:22,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:22:22,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:22,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:22:22,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:22:22,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513959753] [2022-11-25 18:22:22,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513959753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:22:22,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:22:22,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 18:22:22,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215445438] [2022-11-25 18:22:22,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:22:22,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:22:22,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:22:22,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:22:22,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:22:22,305 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 18:22:22,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:22:22,501 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-25 18:22:22,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:22:22,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 18:22:22,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:22:22,502 INFO L225 Difference]: With dead ends: 19 [2022-11-25 18:22:22,502 INFO L226 Difference]: Without dead ends: 13 [2022-11-25 18:22:22,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:22:22,504 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:22:22,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 35 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:22:22,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-25 18:22:22,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-11-25 18:22:22,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:22:22,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-11-25 18:22:22,509 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2022-11-25 18:22:22,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:22:22,511 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-11-25 18:22:22,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 18:22:22,512 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-11-25 18:22:22,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 18:22:22,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:22:22,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:22:22,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:22:22,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:22:22,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:22:22,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:22:22,715 INFO L85 PathProgramCache]: Analyzing trace with hash 607524954, now seen corresponding path program 1 times [2022-11-25 18:22:22,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:22:22,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255270233] [2022-11-25 18:22:22,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:22:22,716 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 18:22:22,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:22:22,718 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:22:22,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:22:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:22:22,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 18:22:22,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:22:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:25,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:22:41,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:22:41,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:22:41,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255270233] [2022-11-25 18:22:41,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255270233] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:22:41,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:22:41,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-25 18:22:41,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699785378] [2022-11-25 18:22:41,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:22:41,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 18:22:41,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:22:41,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 18:22:41,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=238, Unknown=5, NotChecked=0, Total=306 [2022-11-25 18:22:41,715 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 18 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 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 18:22:50,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:23:12,522 WARN L233 SmtUtils]: Spent 14.70s on a formula simplification. DAG size of input: 31 DAG size of output: 24 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:23:22,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-25 18:23:51,051 WARN L233 SmtUtils]: Spent 15.43s on a formula simplification. DAG size of input: 35 DAG size of output: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:24:23,144 WARN L233 SmtUtils]: Spent 15.41s on a formula simplification. DAG size of input: 39 DAG size of output: 32 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:24:45,778 WARN L233 SmtUtils]: Spent 16.85s on a formula simplification. DAG size of input: 42 DAG size of output: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:24:45,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:45,960 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-11-25 18:24:45,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 18:24:45,968 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-25 18:24:45,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:45,969 INFO L225 Difference]: With dead ends: 31 [2022-11-25 18:24:45,969 INFO L226 Difference]: Without dead ends: 17 [2022-11-25 18:24:45,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 134.6s TimeCoverageRelationStatistics Valid=235, Invalid=672, Unknown=23, NotChecked=0, Total=930 [2022-11-25 18:24:45,972 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 46 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:45,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 55 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-25 18:24:45,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-25 18:24:45,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2022-11-25 18:24:45,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 18:24:45,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-25 18:24:45,981 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2022-11-25 18:24:45,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:45,981 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-25 18:24:45,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 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 18:24:45,982 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-25 18:24:45,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 18:24:45,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:45,983 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:45,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:24:46,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:24:46,190 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:46,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:46,190 INFO L85 PathProgramCache]: Analyzing trace with hash -975325800, now seen corresponding path program 1 times [2022-11-25 18:24:46,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:46,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531826476] [2022-11-25 18:24:46,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:46,191 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 18:24:46,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:46,198 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:24:46,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:24:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:49,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 18:24:49,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:25:28,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:25:28,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:27:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:21,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:27:21,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531826476] [2022-11-25 18:27:21,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531826476] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:27:21,105 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:27:21,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-25 18:27:21,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238258403] [2022-11-25 18:27:21,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:27:21,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 18:27:21,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:27:21,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 18:27:21,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=361, Unknown=26, NotChecked=0, Total=462 [2022-11-25 18:27:21,107 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 22 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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 18:27:26,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 18:27:37,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 18:27:54,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-25 18:27:57,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 18:28:01,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:28:03,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-25 18:28:06,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:28:08,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-25 18:28:52,056 WARN L233 SmtUtils]: Spent 21.68s on a formula simplification. DAG size of input: 42 DAG size of output: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:28:53,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:28:56,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-25 18:28:58,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:29:59,699 WARN L233 SmtUtils]: Spent 45.97s on a formula simplification. DAG size of input: 54 DAG size of output: 43 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:30:01,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:30:05,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:30:08,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:30:10,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-25 18:30:13,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:30:15,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-25 18:30:17,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:31:29,358 WARN L233 SmtUtils]: Spent 55.38s on a formula simplification. DAG size of input: 65 DAG size of output: 52 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:32:00,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:32:02,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-25 18:32:03,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-25 18:32:05,745 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ sign_extend 24) |c_ULTIMATE.start_gcd_test_~a#1|)) (.cse8 ((_ sign_extend 24) |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse3 ((_ sign_extend 24) |c_ULTIMATE.start_main_~x~0#1|)) (.cse14 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse1 .cse8))))) (let ((.cse9 (= .cse14 (_ bv0 32))) (.cse4 (not (bvsgt .cse3 (_ bv0 32)))) (.cse15 ((_ sign_extend 24) |c_ULTIMATE.start_gcd_test_#res#1|))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_14| (_ BitVec 8))) (let ((.cse2 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~a#1_14|))) (let ((.cse0 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse3 .cse2))))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| ((_ extract 7 0) (bvsrem .cse0 .cse1))) (not (bvslt .cse2 (_ bv0 32))) (= |c_ULTIMATE.start_gcd_test_~a#1| ((_ extract 7 0) (bvsrem .cse2 .cse0))) (not (= .cse0 (_ bv0 32))))))) (or (bvsge .cse3 ((_ sign_extend 24) |c_ULTIMATE.start_main_~g~0#1|)) .cse4) (or (forall ((|ULTIMATE.start_gcd_test_~b#1| (_ BitVec 8))) (let ((.cse7 ((_ sign_extend 24) |ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse6 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse1 .cse7))))) (let ((.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse7 .cse6))))) (or (bvsge .cse3 .cse5) (not (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse6 .cse5))) (_ bv0 32))) (= .cse6 (_ bv0 32))))))) (bvslt .cse1 (_ bv0 32)) .cse4) (or (bvsge .cse3 .cse8) (not .cse9) .cse4) (not (= .cse1 (_ bv0 32))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_14| (_ BitVec 8))) (let ((.cse11 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~a#1_14|))) (let ((.cse12 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse3 .cse11))))) (let ((.cse10 ((_ extract 7 0) (bvsrem .cse11 .cse12)))) (and (= |c_ULTIMATE.start_main_~g~0#1| .cse10) (not (bvslt .cse11 (_ bv0 32))) (= (_ bv0 32) ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse12 ((_ sign_extend 24) .cse10))))) (not (= .cse12 (_ bv0 32)))))))) (let ((.cse13 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse8 .cse14))))) (or .cse9 (bvsge .cse3 .cse13) .cse4 (not (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse14 .cse13))) (_ bv0 32))))) (or (bvsge .cse3 .cse15) .cse4) (or (bvsge .cse3 .cse1) (not (= .cse8 (_ bv0 32))) .cse4) (not (bvslt .cse3 (_ bv0 32))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_14| (_ BitVec 8))) (let ((.cse16 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~a#1_14|))) (let ((.cse17 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse3 .cse16))))) (and (= ((_ extract 7 0) (bvsrem .cse16 .cse17)) |c_ULTIMATE.start_gcd_test_#res#1|) (not (bvslt .cse16 (_ bv0 32))) (not (= .cse17 (_ bv0 32))) (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse17 .cse15))) (_ bv0 32)))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_14| (_ BitVec 8))) (let ((.cse18 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~a#1_14|))) (let ((.cse19 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse3 .cse18))))) (and (not (bvslt .cse18 (_ bv0 32))) (= |c_ULTIMATE.start_gcd_test_~a#1| ((_ extract 7 0) (bvsrem .cse18 .cse19))) (not (= .cse19 (_ bv0 32))) (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse19 .cse1))) (_ bv0 32)))))))))) is different from false [2022-11-25 18:32:19,031 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 33 DAG size of output: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:32:22,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-25 18:32:32,358 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 37 DAG size of output: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:32:56,744 WARN L233 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 40 DAG size of output: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:32:58,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-25 18:32:58,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:32:58,540 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-11-25 18:32:58,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 18:32:58,560 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-25 18:32:58,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:32:58,561 INFO L225 Difference]: With dead ends: 31 [2022-11-25 18:32:58,561 INFO L226 Difference]: Without dead ends: 21 [2022-11-25 18:32:58,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 393.5s TimeCoverageRelationStatistics Valid=212, Invalid=864, Unknown=50, NotChecked=64, Total=1190 [2022-11-25 18:32:58,563 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 43 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 7 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 68.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:32:58,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 68 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 160 Invalid, 19 Unknown, 1 Unchecked, 68.9s Time] [2022-11-25 18:32:58,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-25 18:32:58,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2022-11-25 18:32:58,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 18:32:58,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-25 18:32:58,569 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2022-11-25 18:32:58,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:32:58,569 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-25 18:32:58,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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 18:32:58,570 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-25 18:32:58,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 18:32:58,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:32:58,570 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:32:58,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:32:58,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:32:58,771 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:32:58,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:32:58,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1541616038, now seen corresponding path program 2 times [2022-11-25 18:32:58,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:32:58,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892194531] [2022-11-25 18:32:58,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:32:58,772 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 18:32:58,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:32:58,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:32:58,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_722a8b2e-c235-4614-808c-4a66513d003b/bin/uautomizer-ZsLfNo2U6R/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 18:33:19,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:33:19,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:33:19,065 WARN L261 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-25 18:33:19,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:35:48,760 WARN L233 SmtUtils]: Spent 10.49s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 18:36:10,824 WARN L837 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_gcd_test_~b#1_22| (_ BitVec 8)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 8))) (let ((.cse0 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~b#1_22|))) (let ((.cse3 ((_ sign_extend 24) |ULTIMATE.start_main_~x~0#1|)) (.cse6 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse0))))) (let ((.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse3 .cse6))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse6 .cse5))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse2 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse1))))) (and (bvslt .cse0 (_ bv0 32)) (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse1 .cse2))) (_ bv0 32)) (not (= .cse1 (_ bv0 32))) (not (bvsge .cse3 .cse2)) (bvsgt .cse3 (_ bv0 32)))))))))) is different from false [2022-11-25 18:36:12,862 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_gcd_test_~b#1_22| (_ BitVec 8)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 8))) (let ((.cse0 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~b#1_22|))) (let ((.cse3 ((_ sign_extend 24) |ULTIMATE.start_main_~x~0#1|)) (.cse6 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse0))))) (let ((.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse3 .cse6))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse6 .cse5))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse2 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse1))))) (and (bvslt .cse0 (_ bv0 32)) (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse1 .cse2))) (_ bv0 32)) (not (= .cse1 (_ bv0 32))) (not (bvsge .cse3 .cse2)) (bvsgt .cse3 (_ bv0 32)))))))))) is different from true [2022-11-25 18:36:12,863 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:36:12,863 INFO L328 TraceCheckSpWp]: Computing backward predicates...