./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_2_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_2_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8 --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 3c398287975b44a672accc5dcc25b28e536e19f2a0478c0e2a0b4b73bd7a8e18 --- 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-e04fb08 [2022-11-16 11:33:12,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:33:12,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:33:12,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:33:12,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:33:12,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:33:12,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:33:12,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:33:12,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:33:12,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:33:12,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:33:12,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:33:12,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:33:12,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:33:12,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:33:12,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:33:12,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:33:12,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:33:12,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:33:12,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:33:12,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:33:12,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:33:12,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:33:12,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:33:12,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:33:12,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:33:12,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:33:12,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:33:12,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:33:12,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:33:12,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:33:12,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:33:12,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:33:12,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:33:12,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:33:12,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:33:12,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:33:12,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:33:12,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:33:12,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:33:12,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:33:12,541 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:33:12,579 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:33:12,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:33:12,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:33:12,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:33:12,581 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:33:12,581 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:33:12,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:33:12,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:33:12,582 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:33:12,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:33:12,584 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:33:12,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:33:12,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:33:12,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:33:12,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:33:12,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:33:12,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:33:12,585 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:33:12,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:33:12,586 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:33:12,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:33:12,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:33:12,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:33:12,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:33:12,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:33:12,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:33:12,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:33:12,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:33:12,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:33:12,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:33:12,589 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:33:12,589 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:33:12,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:33:12,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c398287975b44a672accc5dcc25b28e536e19f2a0478c0e2a0b4b73bd7a8e18 [2022-11-16 11:33:12,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:33:12,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:33:12,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:33:12,948 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:33:12,949 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:33:12,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/gcd_2+newton_2_8.i [2022-11-16 11:33:13,023 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/data/5ca1f809e/a775238f46b74a14a7d54bd5645361b5/FLAG21fcfcd64 [2022-11-16 11:33:13,544 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:33:13,545 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i [2022-11-16 11:33:13,552 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/data/5ca1f809e/a775238f46b74a14a7d54bd5645361b5/FLAG21fcfcd64 [2022-11-16 11:33:13,901 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/data/5ca1f809e/a775238f46b74a14a7d54bd5645361b5 [2022-11-16 11:33:13,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:33:13,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:33:13,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:33:13,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:33:13,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:33:13,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:33:13" (1/1) ... [2022-11-16 11:33:13,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@299209cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:13, skipping insertion in model container [2022-11-16 11:33:13,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:33:13" (1/1) ... [2022-11-16 11:33:13,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:33:13,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:33:14,182 WARN L229 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_6d7b5634-50c9-48e0-86b9-155918248303/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i[1226,1239] [2022-11-16 11:33:14,206 WARN L229 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_6d7b5634-50c9-48e0-86b9-155918248303/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i[2841,2854] [2022-11-16 11:33:14,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:33:14,217 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:33:14,231 WARN L229 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_6d7b5634-50c9-48e0-86b9-155918248303/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i[1226,1239] [2022-11-16 11:33:14,242 WARN L229 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_6d7b5634-50c9-48e0-86b9-155918248303/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i[2841,2854] [2022-11-16 11:33:14,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:33:14,265 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:33:14,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:14 WrapperNode [2022-11-16 11:33:14,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:33:14,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:33:14,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:33:14,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:33:14,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:14" (1/1) ... [2022-11-16 11:33:14,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:14" (1/1) ... [2022-11-16 11:33:14,305 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2022-11-16 11:33:14,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:33:14,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:33:14,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:33:14,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:33:14,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:14" (1/1) ... [2022-11-16 11:33:14,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:14" (1/1) ... [2022-11-16 11:33:14,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:14" (1/1) ... [2022-11-16 11:33:14,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:14" (1/1) ... [2022-11-16 11:33:14,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:14" (1/1) ... [2022-11-16 11:33:14,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:14" (1/1) ... [2022-11-16 11:33:14,352 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:14" (1/1) ... [2022-11-16 11:33:14,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:14" (1/1) ... [2022-11-16 11:33:14,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:33:14,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:33:14,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:33:14,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:33:14,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:14" (1/1) ... [2022-11-16 11:33:14,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:33:14,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:14,401 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:33:14,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:33:14,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:33:14,456 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-16 11:33:14,456 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-16 11:33:14,456 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 11:33:14,457 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 11:33:14,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:33:14,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:33:14,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:33:14,531 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:33:14,533 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:33:14,780 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:33:14,799 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:33:14,799 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:33:14,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:33:14 BoogieIcfgContainer [2022-11-16 11:33:14,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:33:14,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:33:14,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:33:14,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:33:14,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:33:13" (1/3) ... [2022-11-16 11:33:14,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf260f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:33:14, skipping insertion in model container [2022-11-16 11:33:14,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:33:14" (2/3) ... [2022-11-16 11:33:14,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf260f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:33:14, skipping insertion in model container [2022-11-16 11:33:14,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:33:14" (3/3) ... [2022-11-16 11:33:14,825 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_2_8.i [2022-11-16 11:33:14,860 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:33:14,861 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 11:33:14,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:33:14,965 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;@20708a95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:33:14,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 11:33:14,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:33:14,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:33:14,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:14,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:14,979 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:14,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:14,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-16 11:33:15,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:15,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137769052] [2022-11-16 11:33:15,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:15,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:15,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:15,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137769052] [2022-11-16 11:33:15,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137769052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:15,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:15,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:33:15,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127426831] [2022-11-16 11:33:15,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:15,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:33:15,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:15,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:33:15,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:33:15,419 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-16 11:33:15,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:15,532 INFO L93 Difference]: Finished difference Result 90 states and 111 transitions. [2022-11-16 11:33:15,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:33:15,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 [2022-11-16 11:33:15,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:15,542 INFO L225 Difference]: With dead ends: 90 [2022-11-16 11:33:15,543 INFO L226 Difference]: Without dead ends: 36 [2022-11-16 11:33:15,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:33:15,549 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 30 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:15,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 107 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:15,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-16 11:33:15,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2022-11-16 11:33:15,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:33:15,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-11-16 11:33:15,587 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2022-11-16 11:33:15,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:15,588 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-11-16 11:33:15,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-16 11:33:15,588 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-11-16 11:33:15,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:33:15,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:15,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:15,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:33:15,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:15,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:15,592 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-11-16 11:33:15,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:15,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516427958] [2022-11-16 11:33:15,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:15,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:15,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:15,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:15,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516427958] [2022-11-16 11:33:15,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516427958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:15,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:15,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:33:15,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385649637] [2022-11-16 11:33:15,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:15,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:33:15,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:15,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:33:15,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:33:15,723 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-16 11:33:15,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:15,762 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-11-16 11:33:15,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:33:15,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 [2022-11-16 11:33:15,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:15,764 INFO L225 Difference]: With dead ends: 36 [2022-11-16 11:33:15,764 INFO L226 Difference]: Without dead ends: 30 [2022-11-16 11:33:15,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:33:15,766 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:15,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 82 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:33:15,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-16 11:33:15,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-16 11:33:15,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:33:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-11-16 11:33:15,794 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2022-11-16 11:33:15,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:15,794 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-11-16 11:33:15,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-16 11:33:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-11-16 11:33:15,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:33:15,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:15,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:15,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:33:15,797 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:15,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:15,798 INFO L85 PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times [2022-11-16 11:33:15,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:15,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745119866] [2022-11-16 11:33:15,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:15,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:15,814 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:33:15,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464334878] [2022-11-16 11:33:15,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:15,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:15,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:15,818 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:15,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:33:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:15,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:33:15,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:16,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:33:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:16,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:33:16,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745119866] [2022-11-16 11:33:16,190 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:33:16,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464334878] [2022-11-16 11:33:16,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464334878] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:33:16,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:33:16,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-11-16 11:33:16,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045479073] [2022-11-16 11:33:16,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:33:16,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:33:16,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:33:16,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:33:16,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:33:16,197 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2022-11-16 11:33:16,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:16,330 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-11-16 11:33:16,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:33:16,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) Word has length 12 [2022-11-16 11:33:16,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:16,332 INFO L225 Difference]: With dead ends: 37 [2022-11-16 11:33:16,335 INFO L226 Difference]: Without dead ends: 31 [2022-11-16 11:33:16,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:33:16,337 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:16,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 179 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:33:16,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-16 11:33:16,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-16 11:33:16,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:33:16,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-11-16 11:33:16,351 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 12 [2022-11-16 11:33:16,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:16,352 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-11-16 11:33:16,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2022-11-16 11:33:16,352 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-11-16 11:33:16,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:33:16,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:16,353 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:16,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:16,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:16,560 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:33:16,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:16,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1659957129, now seen corresponding path program 2 times [2022-11-16 11:33:16,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:33:16,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290329982] [2022-11-16 11:33:16,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:16,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:33:16,573 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:33:16,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542366573] [2022-11-16 11:33:16,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:33:16,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:33:16,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:33:16,575 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:33:16,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:33:16,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:33:16,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:33:16,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:33:16,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:28,767 WARN L233 SmtUtils]: Spent 11.03s on a formula simplification. DAG size of input: 72 DAG size of output: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:33:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:32,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:33:41,271 WARN L855 $PredicateComparison]: unable to prove that (or (< 126 |c_ULTIMATE.start_main1_~y~0#1|) (= |c_ULTIMATE.start_gcd_test_~b#1| 0) (let ((.cse5 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse2 (+ |c_ULTIMATE.start_main1_~y~0#1| 1)) (.cse3 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) (.cse13 (+ 257 |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse4 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse67 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse68 (mod .cse67 256))) (or (not (<= (mod (+ .cse67 .cse3) 256) 127)) (< .cse68 .cse13) (not (<= (mod (+ .cse67 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127)) (<= .cse68 127) (< |ULTIMATE.start_gcd_test_~a#1| 0)))))) (.cse15 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse66 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse65 (mod .cse66 256))) (or (< .cse65 .cse13) (not (<= (mod (+ .cse66 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127)) (<= (mod (+ .cse66 .cse3) 256) 127) (<= .cse65 127) (< |ULTIMATE.start_gcd_test_~a#1| 0)))))) (.cse9 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse63 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse64 (mod .cse63 256))) (or (not (<= (mod (+ .cse63 .cse3) 256) 127)) (< .cse64 .cse13) (<= .cse64 127) (< |ULTIMATE.start_gcd_test_~a#1| 0) (<= (mod (+ .cse63 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127)))))) (.cse18 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse62 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (or (not (<= (mod (+ .cse62 .cse3) 256) 127)) (not (= .cse62 0)) (< (mod .cse62 256) .cse2) (<= (mod (+ .cse62 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127))))) (.cse19 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse60 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse61 (mod .cse60 256))) (or (not (<= (mod (+ .cse60 .cse3) 256) 127)) (< .cse61 .cse2) (not (<= .cse61 127)) (< |ULTIMATE.start_gcd_test_~a#1| 0) (<= (mod (+ .cse60 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127)))))) (.cse33 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse59 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse58 (mod .cse59 256))) (or (< .cse58 .cse2) (not (<= (mod (+ .cse59 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127)) (<= (mod (+ .cse59 .cse3) 256) 127) (not (<= .cse58 127)) (< |ULTIMATE.start_gcd_test_~a#1| 0)))))) (.cse36 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse57 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (or (not (= .cse57 0)) (< (mod .cse57 256) .cse2) (not (<= (mod (+ .cse57 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127)) (<= (mod (+ .cse57 .cse3) 256) 127))))) (.cse22 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse56 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse55 (mod .cse56 256))) (or (< .cse55 .cse13) (<= (mod (+ .cse56 .cse3) 256) 127) (<= .cse55 127) (< |ULTIMATE.start_gcd_test_~a#1| 0) (<= (mod (+ .cse56 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127)))))) (.cse6 (not .cse5)) (.cse41 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse54 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (or (not (= .cse54 0)) (< (mod .cse54 256) .cse2) (<= (mod (+ .cse54 .cse3) 256) 127) (<= (mod (+ .cse54 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127))))) (.cse44 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse53 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse52 (mod .cse53 256))) (or (< .cse52 .cse2) (<= (mod (+ .cse53 .cse3) 256) 127) (not (<= .cse52 127)) (< |ULTIMATE.start_gcd_test_~a#1| 0) (<= (mod (+ .cse53 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127)))))) (.cse23 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse50 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse51 (mod .cse50 256))) (or (not (<= (mod (+ .cse50 .cse3) 256) 127)) (< .cse51 .cse2) (not (<= (mod (+ .cse50 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127)) (not (<= .cse51 127)) (< |ULTIMATE.start_gcd_test_~a#1| 0)))))) (.cse26 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse49 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (or (not (<= (mod (+ .cse49 .cse3) 256) 127)) (not (= .cse49 0)) (< (mod .cse49 256) .cse2) (not (<= (mod (+ .cse49 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127))))))) (and (or (and (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse1 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse0 (mod (+ .cse1 .cse3) 256))) (or (not (<= .cse0 127)) (not (< |ULTIMATE.start_gcd_test_~a#1| 0)) (not (<= (mod (+ .cse1 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127)) (<= (mod .cse1 256) 127) (< .cse0 .cse2))))) .cse4) .cse5) (or .cse6 (and .cse4 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse7 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse8 (mod (+ .cse7 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (or (not (<= (mod (+ .cse7 .cse3) 256) 127)) (< .cse8 .cse2) (not (< |ULTIMATE.start_gcd_test_~a#1| 0)) (not (<= .cse8 127)) (<= (mod .cse7 256) 127))))))) (or .cse5 (and .cse9 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse11 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse10 (mod (+ .cse11 .cse3) 256))) (or (not (<= .cse10 127)) (not (< |ULTIMATE.start_gcd_test_~a#1| 0)) (<= (mod .cse11 256) 127) (< .cse10 .cse2) (<= (mod (+ .cse11 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127))))))) (or (and (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse14 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse12 (mod (+ .cse14 .cse3) 256))) (or (< .cse12 .cse13) (not (< |ULTIMATE.start_gcd_test_~a#1| 0)) (not (<= (mod (+ .cse14 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127)) (<= .cse12 127) (<= (mod .cse14 256) 127))))) .cse15) .cse5) (or .cse6 (and (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse16 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse17 (mod (+ .cse16 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (or (not (<= (mod (+ .cse16 .cse3) 256) 127)) (not (< |ULTIMATE.start_gcd_test_~a#1| 0)) (< .cse17 .cse13) (not (<= (mod .cse16 256) 127)) (<= .cse17 127) (= .cse16 0))))) .cse18 .cse19)) (or .cse5 (and (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse21 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse20 (mod (+ .cse21 .cse3) 256))) (or (< .cse20 .cse13) (not (< |ULTIMATE.start_gcd_test_~a#1| 0)) (<= .cse20 127) (<= (mod .cse21 256) 127) (<= (mod (+ .cse21 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127))))) .cse22)) (or .cse6 (and .cse23 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse24 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse25 (mod (+ .cse24 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (or (not (<= (mod (+ .cse24 .cse3) 256) 127)) (< .cse25 .cse2) (not (< |ULTIMATE.start_gcd_test_~a#1| 0)) (not (<= .cse25 127)) (not (<= (mod .cse24 256) 127)) (= .cse24 0))))) .cse26)) (or .cse6 (and (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse28 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse27 (mod (+ .cse28 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (or (< .cse27 .cse2) (not (< |ULTIMATE.start_gcd_test_~a#1| 0)) (not (<= .cse27 127)) (<= (mod (+ .cse28 .cse3) 256) 127) (<= (mod .cse28 256) 127))))) .cse15)) (or .cse6 (and .cse9 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse29 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse30 (mod (+ .cse29 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (or (not (<= (mod (+ .cse29 .cse3) 256) 127)) (not (< |ULTIMATE.start_gcd_test_~a#1| 0)) (< .cse30 .cse13) (<= (mod .cse29 256) 127) (<= .cse30 127))))))) (or .cse5 (and .cse18 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse32 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse31 (mod (+ .cse32 .cse3) 256))) (or (not (<= .cse31 127)) (not (< |ULTIMATE.start_gcd_test_~a#1| 0)) (not (<= (mod .cse32 256) 127)) (< .cse31 .cse2) (<= (mod (+ .cse32 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127) (= .cse32 0))))) .cse19)) (or .cse6 (and .cse33 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse35 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse34 (mod (+ .cse35 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (or (< .cse34 .cse2) (not (< |ULTIMATE.start_gcd_test_~a#1| 0)) (not (<= .cse34 127)) (<= (mod (+ .cse35 .cse3) 256) 127) (not (<= (mod .cse35 256) 127)) (= .cse35 0))))) .cse36)) (or .cse5 (and .cse33 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse38 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse37 (mod (+ .cse38 .cse3) 256))) (or (< .cse37 .cse13) (not (< |ULTIMATE.start_gcd_test_~a#1| 0)) (not (<= (mod (+ .cse38 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127)) (<= .cse37 127) (not (<= (mod .cse38 256) 127)) (= .cse38 0))))) .cse36)) (or .cse6 (and (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse40 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse39 (mod (+ .cse40 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (or (not (< |ULTIMATE.start_gcd_test_~a#1| 0)) (< .cse39 .cse13) (<= (mod (+ .cse40 .cse3) 256) 127) (<= (mod .cse40 256) 127) (<= .cse39 127))))) .cse22)) (or .cse6 (and .cse41 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse43 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse42 (mod (+ .cse43 |c_ULTIMATE.start_gcd_test_~b#1|) 256))) (or (not (< |ULTIMATE.start_gcd_test_~a#1| 0)) (< .cse42 .cse13) (<= (mod (+ .cse43 .cse3) 256) 127) (not (<= (mod .cse43 256) 127)) (<= .cse42 127) (= .cse43 0))))) .cse44)) (or .cse5 (and .cse41 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse46 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse45 (mod (+ .cse46 .cse3) 256))) (or (< .cse45 .cse13) (not (< |ULTIMATE.start_gcd_test_~a#1| 0)) (<= .cse45 127) (not (<= (mod .cse46 256) 127)) (<= (mod (+ .cse46 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127) (= .cse46 0))))) .cse44)) (or (and .cse23 (forall ((|ULTIMATE.start_gcd_test_~a#1| Int)) (let ((.cse48 (mod |ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse47 (mod (+ .cse48 .cse3) 256))) (or (not (<= .cse47 127)) (not (< |ULTIMATE.start_gcd_test_~a#1| 0)) (not (<= (mod (+ .cse48 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127)) (not (<= (mod .cse48 256) 127)) (< .cse47 .cse2) (= .cse48 0))))) .cse26) .cse5))))) is different from true [2022-11-16 11:34:12,627 WARN L233 SmtUtils]: Spent 29.38s on a formula simplification. DAG size of input: 78 DAG size of output: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:34:12,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-16 11:34:12,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:34:12,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290329982] [2022-11-16 11:34:12,913 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:34:12,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542366573] [2022-11-16 11:34:12,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542366573] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:34:12,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:34:12,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 11:34:12,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518148108] [2022-11-16 11:34:12,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:34:12,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:34:12,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:34:12,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:34:12,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=171, Unknown=1, NotChecked=26, Total=240 [2022-11-16 11:34:12,917 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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) [2022-11-16 11:34:20,626 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:34:20,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:34:20,638 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-11-16 11:34:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:34:20,639 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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 [2022-11-16 11:34:20,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:34:20,640 INFO L225 Difference]: With dead ends: 38 [2022-11-16 11:34:20,640 INFO L226 Difference]: Without dead ends: 32 [2022-11-16 11:34:20,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 54.4s TimeCoverageRelationStatistics Valid=49, Invalid=194, Unknown=1, NotChecked=28, Total=272 [2022-11-16 11:34:20,641 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:34:20,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 258 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 51 Unchecked, 0.0s Time] [2022-11-16 11:34:20,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-16 11:34:20,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-16 11:34:20,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:34:20,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-11-16 11:34:20,648 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 13 [2022-11-16 11:34:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:34:20,649 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-11-16 11:34:20,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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) [2022-11-16 11:34:20,649 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-11-16 11:34:20,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 11:34:20,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:34:20,650 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:34:20,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:34:20,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:20,861 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:34:20,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:34:20,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1682229690, now seen corresponding path program 3 times [2022-11-16 11:34:20,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:34:20,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034949103] [2022-11-16 11:34:20,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:34:20,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:34:20,879 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:34:20,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707163599] [2022-11-16 11:34:20,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:34:20,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:34:20,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:34:20,897 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:34:20,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:34:21,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 11:34:21,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:34:21,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-16 11:34:21,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:34:40,018 WARN L233 SmtUtils]: Spent 9.96s on a formula simplification. DAG size of input: 55 DAG size of output: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:35:48,718 WARN L233 SmtUtils]: Spent 57.36s on a formula simplification. DAG size of input: 88 DAG size of output: 80 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:36:16,266 WARN L233 SmtUtils]: Spent 21.76s on a formula simplification. DAG size of input: 65 DAG size of output: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:36:26,249 WARN L233 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:36:41,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:41,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034949103] [2022-11-16 11:36:41,532 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:36:41,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707163599] [2022-11-16 11:36:41,536 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-16 11:36:41,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 139 [2022-11-16 11:36:41,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:41,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:36:41,737 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_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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.parseSuccess(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.pop(UndoableWrapperScript.java:61) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:67) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:620) 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:184) 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:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) 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:336) 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) ... 53 more [2022-11-16 11:36:41,740 INFO L158 Benchmark]: Toolchain (without parser) took 207835.02ms. Allocated memory was 123.7MB in the beginning and 153.1MB in the end (delta: 29.4MB). Free memory was 86.0MB in the beginning and 88.7MB in the end (delta: -2.8MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2022-11-16 11:36:41,741 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 123.7MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:36:41,741 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.93ms. Allocated memory is still 123.7MB. Free memory was 85.8MB in the beginning and 97.7MB in the end (delta: -11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:36:41,742 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.12ms. Allocated memory is still 123.7MB. Free memory was 97.7MB in the beginning and 95.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:36:41,742 INFO L158 Benchmark]: Boogie Preprocessor took 57.11ms. Allocated memory is still 123.7MB. Free memory was 95.9MB in the beginning and 94.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:36:41,742 INFO L158 Benchmark]: RCFGBuilder took 438.20ms. Allocated memory is still 123.7MB. Free memory was 94.3MB in the beginning and 82.3MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:36:41,743 INFO L158 Benchmark]: TraceAbstraction took 206935.70ms. Allocated memory was 123.7MB in the beginning and 153.1MB in the end (delta: 29.4MB). Free memory was 81.7MB in the beginning and 88.7MB in the end (delta: -7.1MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2022-11-16 11:36:41,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 123.7MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.93ms. Allocated memory is still 123.7MB. Free memory was 85.8MB in the beginning and 97.7MB in the end (delta: -11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.12ms. Allocated memory is still 123.7MB. Free memory was 97.7MB in the beginning and 95.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.11ms. Allocated memory is still 123.7MB. Free memory was 95.9MB in the beginning and 94.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 438.20ms. Allocated memory is still 123.7MB. Free memory was 94.3MB in the beginning and 82.3MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 206935.70ms. Allocated memory was 123.7MB in the beginning and 153.1MB in the end (delta: 29.4MB). Free memory was 81.7MB in the beginning and 88.7MB in the end (delta: -7.1MB). Peak memory consumption was 22.8MB. 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_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_2_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8 --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 3c398287975b44a672accc5dcc25b28e536e19f2a0478c0e2a0b4b73bd7a8e18 --- 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-e04fb08 [2022-11-16 11:36:43,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:36:43,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:36:43,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:36:43,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:36:43,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:36:43,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:36:43,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:36:43,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:36:43,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:36:43,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:36:43,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:36:43,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:36:43,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:36:43,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:36:43,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:36:43,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:36:43,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:36:43,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:36:43,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:36:43,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:36:43,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:36:43,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:36:43,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:36:43,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:36:43,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:36:43,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:36:43,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:36:43,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:36:43,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:36:43,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:36:43,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:36:43,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:36:43,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:36:43,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:36:43,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:36:43,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:36:43,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:36:43,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:36:43,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:36:43,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:36:43,975 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-16 11:36:44,016 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:36:44,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:36:44,018 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:36:44,018 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:36:44,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:36:44,019 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:36:44,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:36:44,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:36:44,021 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:36:44,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:36:44,022 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:36:44,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:36:44,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:36:44,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:36:44,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:36:44,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:36:44,023 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:36:44,023 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:36:44,024 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:36:44,024 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:36:44,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:36:44,024 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:36:44,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:36:44,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:36:44,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:36:44,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:36:44,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:36:44,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:36:44,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:36:44,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:36:44,027 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:36:44,027 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:36:44,027 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:36:44,027 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:36:44,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:36:44,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:36:44,028 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c398287975b44a672accc5dcc25b28e536e19f2a0478c0e2a0b4b73bd7a8e18 [2022-11-16 11:36:44,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:36:44,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:36:44,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:36:44,480 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:36:44,481 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:36:44,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/gcd_2+newton_2_8.i [2022-11-16 11:36:44,565 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/data/f9989a31a/05b8b6c67234469a92dcd66d611cc985/FLAG92b936058 [2022-11-16 11:36:45,008 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:36:45,009 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i [2022-11-16 11:36:45,024 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/data/f9989a31a/05b8b6c67234469a92dcd66d611cc985/FLAG92b936058 [2022-11-16 11:36:45,406 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/data/f9989a31a/05b8b6c67234469a92dcd66d611cc985 [2022-11-16 11:36:45,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:36:45,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:36:45,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:36:45,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:36:45,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:36:45,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:36:45" (1/1) ... [2022-11-16 11:36:45,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@763f1574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:45, skipping insertion in model container [2022-11-16 11:36:45,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:36:45" (1/1) ... [2022-11-16 11:36:45,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:36:45,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:36:45,573 WARN L229 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_6d7b5634-50c9-48e0-86b9-155918248303/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i[1226,1239] [2022-11-16 11:36:45,599 WARN L229 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_6d7b5634-50c9-48e0-86b9-155918248303/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i[2841,2854] [2022-11-16 11:36:45,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:36:45,611 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:36:45,644 WARN L229 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_6d7b5634-50c9-48e0-86b9-155918248303/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i[1226,1239] [2022-11-16 11:36:45,654 WARN L229 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_6d7b5634-50c9-48e0-86b9-155918248303/sv-benchmarks/c/combinations/gcd_2+newton_2_8.i[2841,2854] [2022-11-16 11:36:45,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:36:45,673 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:36:45,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:45 WrapperNode [2022-11-16 11:36:45,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:36:45,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:36:45,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:36:45,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:36:45,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:45" (1/1) ... [2022-11-16 11:36:45,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:45" (1/1) ... [2022-11-16 11:36:45,737 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 80 [2022-11-16 11:36:45,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:36:45,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:36:45,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:36:45,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:36:45,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:45" (1/1) ... [2022-11-16 11:36:45,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:45" (1/1) ... [2022-11-16 11:36:45,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:45" (1/1) ... [2022-11-16 11:36:45,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:45" (1/1) ... [2022-11-16 11:36:45,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:45" (1/1) ... [2022-11-16 11:36:45,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:45" (1/1) ... [2022-11-16 11:36:45,767 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:45" (1/1) ... [2022-11-16 11:36:45,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:45" (1/1) ... [2022-11-16 11:36:45,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:36:45,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:36:45,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:36:45,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:36:45,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:45" (1/1) ... [2022-11-16 11:36:45,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:36:45,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:45,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:45,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:36:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:36:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 11:36:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-16 11:36:45,858 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-16 11:36:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 11:36:45,858 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 11:36:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:36:45,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:36:45,942 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:36:45,944 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:36:55,109 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:36:55,117 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:36:55,118 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:36:55,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:36:55 BoogieIcfgContainer [2022-11-16 11:36:55,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:36:55,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:36:55,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:36:55,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:36:55,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:36:45" (1/3) ... [2022-11-16 11:36:55,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238af059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:36:55, skipping insertion in model container [2022-11-16 11:36:55,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:45" (2/3) ... [2022-11-16 11:36:55,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238af059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:36:55, skipping insertion in model container [2022-11-16 11:36:55,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:36:55" (3/3) ... [2022-11-16 11:36:55,131 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_2_8.i [2022-11-16 11:36:55,155 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:36:55,155 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 11:36:55,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:36:55,219 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;@5ee864de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:36:55,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 11:36:55,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:36:55,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:36:55,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:55,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:55,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:55,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:55,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-16 11:36:55,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:55,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334101] [2022-11-16 11:36:55,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:55,257 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 [2022-11-16 11:36:55,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:55,267 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:55,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:55,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:36:55,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:55,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:55,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:55,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334101] [2022-11-16 11:36:55,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:55,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:55,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:36:55,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834000010] [2022-11-16 11:36:55,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:55,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:36:55,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:55,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:36:55,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:55,665 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-16 11:36:55,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:55,692 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2022-11-16 11:36:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:36:55,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 [2022-11-16 11:36:55,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:55,707 INFO L225 Difference]: With dead ends: 68 [2022-11-16 11:36:55,707 INFO L226 Difference]: Without dead ends: 30 [2022-11-16 11:36:55,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:36:55,713 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:55,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time] [2022-11-16 11:36:55,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-16 11:36:55,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-16 11:36:55,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:36:55,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-16 11:36:55,750 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2022-11-16 11:36:55,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:55,750 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-16 11:36:55,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-16 11:36:55,751 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-16 11:36:55,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:36:55,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:55,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:55,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:55,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:55,966 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:55,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:55,967 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-11-16 11:36:55,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:55,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038552938] [2022-11-16 11:36:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:55,968 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 [2022-11-16 11:36:55,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:55,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:55,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:56,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:36:56,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:56,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:56,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:56,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:56,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038552938] [2022-11-16 11:36:56,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038552938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:56,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:56,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:36:56,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196589205] [2022-11-16 11:36:56,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:56,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:36:56,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:56,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:36:56,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:36:56,197 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-16 11:36:56,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:56,424 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-11-16 11:36:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:36:56,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 [2022-11-16 11:36:56,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:56,426 INFO L225 Difference]: With dead ends: 37 [2022-11-16 11:36:56,426 INFO L226 Difference]: Without dead ends: 31 [2022-11-16 11:36:56,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:36:56,428 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:56,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 84 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:36:56,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-16 11:36:56,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-11-16 11:36:56,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:36:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-16 11:36:56,437 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11 [2022-11-16 11:36:56,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:56,438 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-16 11:36:56,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-16 11:36:56,439 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-16 11:36:56,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:36:56,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:56,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:56,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:56,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:56,657 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:56,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:56,658 INFO L85 PathProgramCache]: Analyzing trace with hash 149955676, now seen corresponding path program 1 times [2022-11-16 11:36:56,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:56,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177012119] [2022-11-16 11:36:56,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:56,659 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 [2022-11-16 11:36:56,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:56,661 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:56,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:56,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:36:56,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:56,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:36:56,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:56,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177012119] [2022-11-16 11:36:56,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177012119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:56,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:56,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:36:56,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974317634] [2022-11-16 11:36:56,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:56,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:36:56,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:56,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:36:56,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:36:56,941 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2022-11-16 11:36:57,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:57,090 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-11-16 11:36:57,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:36:57,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) Word has length 12 [2022-11-16 11:36:57,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:36:57,093 INFO L225 Difference]: With dead ends: 38 [2022-11-16 11:36:57,093 INFO L226 Difference]: Without dead ends: 30 [2022-11-16 11:36:57,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:36:57,095 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:36:57,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 84 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:36:57,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-16 11:36:57,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-16 11:36:57,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:36:57,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-11-16 11:36:57,105 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2022-11-16 11:36:57,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:36:57,106 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-11-16 11:36:57,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2022-11-16 11:36:57,107 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-11-16 11:36:57,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:36:57,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:36:57,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:57,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:57,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:57,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:36:57,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:57,328 INFO L85 PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times [2022-11-16 11:36:57,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:36:57,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194050042] [2022-11-16 11:36:57,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:57,329 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 [2022-11-16 11:36:57,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:36:57,332 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:36:57,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:36:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:57,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:36:57,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:58,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:36:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:58,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:58,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194050042] [2022-11-16 11:36:58,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194050042] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:36:58,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:36:58,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-16 11:36:58,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254044499] [2022-11-16 11:36:58,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:36:58,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:36:58,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:58,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:36:58,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:36:58,924 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 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) [2022-11-16 11:37:01,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:37:01,677 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2022-11-16 11:37:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:37:01,678 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 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) Word has length 12 [2022-11-16 11:37:01,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:37:01,679 INFO L225 Difference]: With dead ends: 47 [2022-11-16 11:37:01,679 INFO L226 Difference]: Without dead ends: 33 [2022-11-16 11:37:01,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:37:01,681 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 42 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:37:01,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 224 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-16 11:37:01,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-16 11:37:01,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-16 11:37:01,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:37:01,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-11-16 11:37:01,698 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 12 [2022-11-16 11:37:01,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:37:01,699 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-11-16 11:37:01,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 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) [2022-11-16 11:37:01,701 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-11-16 11:37:01,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 11:37:01,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:37:01,702 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:01,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:37:01,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:37:01,911 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:37:01,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:01,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2084161321, now seen corresponding path program 2 times [2022-11-16 11:37:01,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:37:01,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477751857] [2022-11-16 11:37:01,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:37:01,913 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 [2022-11-16 11:37:01,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:37:01,917 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:37:01,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:37:08,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:37:08,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:37:08,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 11:37:08,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:53,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:40:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:40:33,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:40:33,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477751857] [2022-11-16 11:40:33,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477751857] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:40:33,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:40:33,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-16 11:40:33,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343600996] [2022-11-16 11:40:33,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:40:33,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 11:40:33,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:40:33,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 11:40:33,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=430, Unknown=40, NotChecked=0, Total=552 [2022-11-16 11:40:33,736 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 24 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 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) [2022-11-16 11:40:36,094 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 [] [2022-11-16 11:40:37,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:40:48,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:41:04,631 WARN L233 SmtUtils]: Spent 11.26s on a formula simplification. DAG size of input: 38 DAG size of output: 17 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:42:02,636 WARN L233 SmtUtils]: Spent 27.55s on a formula simplification. DAG size of input: 48 DAG size of output: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:42:28,809 WARN L233 SmtUtils]: Spent 11.55s on a formula simplification. DAG size of input: 36 DAG size of output: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:42:55,227 WARN L233 SmtUtils]: Spent 12.31s on a formula simplification. DAG size of input: 36 DAG size of output: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:43:21,215 WARN L233 SmtUtils]: Spent 12.35s on a formula simplification. DAG size of input: 36 DAG size of output: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:43:21,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:43:21,230 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2022-11-16 11:43:21,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:43:21,233 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 11:43:21,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:43:21,233 INFO L225 Difference]: With dead ends: 50 [2022-11-16 11:43:21,234 INFO L226 Difference]: Without dead ends: 40 [2022-11-16 11:43:21,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 335.6s TimeCoverageRelationStatistics Valid=133, Invalid=737, Unknown=60, NotChecked=0, Total=930 [2022-11-16 11:43:21,235 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:43:21,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 381 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 2 Unknown, 29 Unchecked, 5.9s Time] [2022-11-16 11:43:21,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-16 11:43:21,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2022-11-16 11:43:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 29 states have internal predecessors, (31), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 11:43:21,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-11-16 11:43:21,255 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 15 [2022-11-16 11:43:21,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:43:21,256 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-11-16 11:43:21,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 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) [2022-11-16 11:43:21,256 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-11-16 11:43:21,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 11:43:21,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:21,257 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:21,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:43:21,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:43:21,472 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:21,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:21,473 INFO L85 PathProgramCache]: Analyzing trace with hash 829995612, now seen corresponding path program 1 times [2022-11-16 11:43:21,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:43:21,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045188676] [2022-11-16 11:43:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:21,474 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 [2022-11-16 11:43:21,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:43:21,475 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 11:43:21,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d7b5634-50c9-48e0-86b9-155918248303/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 11:43:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:26,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 11:43:26,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:17,925 WARN L233 SmtUtils]: Spent 10.50s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:45:31,041 WARN L833 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| (_ BitVec 8)) (|ULTIMATE.start_main1_~y~0#1| (_ BitVec 8))) (let ((.cse0 ((_ sign_extend 24) |ULTIMATE.start_main1_~y~0#1|)) (.cse4 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~a#1_24|))) (let ((.cse3 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse4))))) (let ((.cse2 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse3))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse3 .cse2))))) (and (not (bvsge .cse0 .cse1)) (not (bvslt .cse0 (_ bv0 32))) (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse2 .cse1))) (_ bv0 32)))))))) is different from false [2022-11-16 11:45:33,065 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_gcd_test_~a#1_24| (_ BitVec 8)) (|ULTIMATE.start_main1_~y~0#1| (_ BitVec 8))) (let ((.cse0 ((_ sign_extend 24) |ULTIMATE.start_main1_~y~0#1|)) (.cse4 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~a#1_24|))) (let ((.cse3 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse4))))) (let ((.cse2 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse3))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse3 .cse2))))) (and (not (bvsge .cse0 .cse1)) (not (bvslt .cse0 (_ bv0 32))) (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse2 .cse1))) (_ bv0 32)))))))) is different from true [2022-11-16 11:45:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:33,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:10,336 WARN L233 SmtUtils]: Spent 6.64s on a formula simplification. DAG size of input: 29 DAG size of output: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)